Machado M. H., Pavenelli G. C., Takemoto R. M., 1995: Influence of the type of environment and of the hydrological level variation in endoparasitic infrapopulations of Pseudoplatystoma corruscans (Agassiz) and Schizodon borelli (Boulenger) (Osteichthyes) of the high Paraná River, Brazil. 16 pp. Revta bras. Zool. 12(4): 961-976.
 
REP 16
Machado R. A., Bernarde P. S., Morato S. A. A., Anjos L., 1999: Análise comparada da riqueza de anuros entre duas áreas com diferentes estados de conservacao no minicípio de Londrina, Paraná, Brasil (Amphibia, Anura). 8 pp. Revta bras. Zool. 16(4): 997-1004.
 
AVE 31
Machado R. B., Aguiar L. M. S., Lamas I. R., Corréa H. K. M., 1995: Notes on the occurrence of Jacamaralcyon tridactyla (Vieillot) (Aves, Piciformes, Galbulidae) in an Atlantic Forest fragment, municipality of Antonio Dias (Minas Gerais). 4 pp. Revta bras. Zool. 12(4): 743-746.
 
EVE 927
Machida M., 1988: Two species of Trematodes from deep-sea fishes of northern Japan. 6 pp. Memoirs of the National Science Museum 21: 107-112.
 
ZME 65327
Machida M., 1991: Gaidropsarus pacificus (Temminck & Schlegel), a junior synonym of Rhinonemus cimbrius (Linnaeus) (Pisces: Gadiformes: Gadidae). 5 pp. [PSC 232] Zoologische Mededelingen 65(25): 327-331.
 
EVE 928
Machida M., Araki J., 1994: Some Trematodes and Cestodes in fishes from off Eastern Hokkaido, northern Japan. 6 pp. Memoirs of the National Science Museum 27: 87-92.
 
EVE 929
Machida M., Uchida A., 1990: Trematodes from unicornfishes of Japanese and adjacent waters. 13 pp. Memoirs of the National Science Museum 23: 69-81.
 
AZC 3003
Mackowicz R., 1987: Ptaki jeziora Pogubie Wielkie w latach 1980-1984 (po destrukcji podwodnej rostlinnosci jeziora). 12 pp. [AVE 143] Acta zoologica cracoviensia 30/3: 25-36.
 
MAM 260
MacPhee R. D. E., Greenwood A. D., 2007: Continuity and change in the extinction dynamics of late Quaternary muskox (Ovibos): Genetic and radiometric evidence. 10 pp. Bull. Carn. Mus. Nat. Hist. 39: 203-212.
 
80832
Maffei G., Della Toffola M., 1993: Resoconto ornitologico per la regione Piemonte-Valle d’Aosta anno 1992. 21 pp.
 
SPX 14229
Mägdefrau H., 1991: Plica nigra, ein neuer Leguan vom Guaiquinima Tepui (Venezuela) (Sauria, Iguanidae). 6 pp. Spixiana 14(2): 229-234.
 
REP 131
Magnussson W. E., 1985: Habitat selection, parasites and injuries in Amazonian crocodilians. 12 pp. Amazoniana 9(2): 193-204.
 
AGR 44
Maia L. A., Chalco F. P., 2002: Fruit production from the floodplain forest of Central Amazonia: a food resource for fish. 10 pp. Acta Amazonica 32(1): 45-54.
 
MAM 227
Malikov V. G., Meyer M. N., Graphodatsky A. S., Polyakov A. V., Sablina O. V., Vaziri A. Sh., Nazari F., Zima J., 1999: On a taxonomic position of some karyomorphs belonging to genus Calomyscus (Rodentia, Cricetidae). 6 pp. Zoological sessions 281(1998): 27-32.
 
REP 17
Malvasio A., Gomes N., Farias E. C., 1999: Identificacao sexual através do estudo anatomico do sistema urogenital em recém-eclodidos e jovens de Trachemys dorbignyi (Duméril Bibron) (Reptilia, Testudines, Emydidae). 12 pp. Revta bras. Zool. 16(1): 91-102.
 
ZVA 49
Malyshev S. I., 1946: O vybore materiala dlja izuèenija instinkta. 8 pp.
 
AVE 32
Marcondes-Machado L. O., 1997: Comportamento reprodutivo de Sporophila lineola (Linnaeus) (Passeriformes, Emberizidae). 6 pp. Revta bras. Zool. 14(3): 517-522.
 
80483
Markov G., 1964: Nasekomojadni bozajnici i grizaèi v Trakija. 35 pp.
 
REP 19
Marques O. A. V., 1996: Biologia reprodutiva da cobra-coral Erythrolamprus aesculapii Linnaues (Colubridae), no sudeste do Brasil. 7 pp. Revta bras. Zool. 13(3): 747-753.
 
REP 20
Marques O. A. V., 1999: Defensive behavior of the green snake Philodryas viridissimus (Linnaeus) (Colubridae, Reptilia) from the Atlantic Forest in Northeastern Brazil. 2 pp. Revta bras. Zool. 16(1): 265-266.
 
80484
Märss T., 1997: Vertebrates of the Pridoli and Silurian-Devonian boundary beds in Europe. 25 pp.
 
AVE 145
Martín-Vivaldi M., Marín J. M., Archila F., López E., Manuel L. C., 1999: Cracterización de una nueva población reproductora de Alondra de Dupont (Chersophilus duponti) (Passeriformes, Alaudidae) en el Sureste ibérico. 8 pp.
 
PSC 132
Martínez-Martínez M., Muòoz-Tedó C., 1988: Tasas de aproximación al alimento y efecto de la interacción visual entre dos cardúmenes de Pterophyllum scalara (Cichlidae). 10 pp.
 
PSC 64
Martins M. L., Castagnolli N., Zuim S. M. F., Urbinati E. C., 1995: Influencia de diferentes níveis de vitamina C naracao sobre parametros hematológicos de alevínos de Piaractus mesopotamicus Holmberg (Osteichthyes, Characidae). 10 pp. Revta bras. Zool. 12(3): 609-618.
 
PSC 65
Martins M. L., Romero N. G., 1996: Efectos del parsitismo sobre el tejido braquial en peces cultivados: estudio parasitologico e histopatologico. 12 pp. Revta bras. Zool. 13(2): 489-500.
 
ZME 67021
Martins, Oliveira, 1993: The snakes of the genus Atractus Wagler (Reptilia: Squamata: Colubridae) from the Manaus region, central Amazonia, Brazil. 20 pp. [81172] Zoologische Mededelingen 67(2): 21-40.
 
AVE 33
Maruch S. M. G., Ribeiro M. G., Teles M. E. O., 1998: Morphological and histochemical aspects of the epididymal region and ductus deferens of Columbina talpacoti (Temminck) (Columbidae, Columbiformes). 9 pp. Revta bras. Zool. 15(2): 365-373.
 
AVE 34
Maruch S. M. G., Teles M. E. O., Ribeiro M. G., 1995: Morphological study of the testes of the dove Columba livia (Gmelin) (Columbidae, Columbiformes). 6 pp. Revta bras. Zool. 12(1): 145-150.
 
EJE 99143
Masaki S., 2002: Ecophysiological consequences of variability in diapause intensity. 12 pp. European Journal of Entomology 99(2): 143-154.
 
PSC 133
Matallanas J., Lloris D., 1987: Primera cita de Lyconus brachycolus Holt Byrne, 1906 (Pisces, Merluccidae) en el Atlántico sur. 5 pp.
 
PSC 66
Matos E., Matos P., Oliveira E., Azevedo C., 1993: Ultraestrutura da espermatogenese do tamoatá, Hoplosternum littorale (Haneoek) (Teleostei, Callichthyidae) do Rio Amazonas. 9 pp. Revta bras. Zool. 10(2): 219-217.
 
PSC 196
Matsuura K., Yabe M., Arai R., 1993: Coastal fishes collected in Eastern Hokkaido, Japan. 10 pp. (in Japanese). Memoirs of the National Science Museum 26: 125-134.
 
81068
Matsuura M., Arai R., Shiogaki M., Aizawa M., 1988: Fishes collected from the Shimokita Peninsula, northern Japan. 16 pp. (in Japanese). Memoirs of the National Science Museum 21: 163-178.
 
PSC 198
Matsuura R., Arai R., 1986: Sea fishes collected from Hegura-jima Island in the Sea of Japan. 7 pp. (in Japanese). Memoirs of the National Science Museum 19: 185-191.
 
AVE 35
Matsyura A. V., 2000: The status of the population of great black-headed gull (Larus ichthyaetus) in the Sivash. 2 pp. Vestnik zoologii 34(1-2): 123-124.
 
80496
Matthews M., 1992: Consiliul international pentru protectia Pasarilor. 46 pp.
 
PSC 134
Mayer R. F., 1970: Quleques particularités morphologiques chez les blennies (Pisces, Blenniidae) de la Mer Noire et leur role dans le comportement de ceux-ci. 10 pp.
 
MAM 31
Mazzolli M., 1993: Ocorrencia de Puma concolor (Linnaeus) (Felidae, Carnivora) em áreas de vegetacao remanescentede Santa Catarina, Brasil. 7 pp. Revta bras. Zool. 10(4): 581-587.
 
REP 132
Mazzoti S., Dall’Olio R., 2003: Missione scientifica di un erpetologo in Ecuador. 6 pp. Quad. St. Not. Stor. Nat. Romagna 17 (suppl.): 139-144.
 
ZME 793069
McAllan I., Borgo E., Violani C., 2005: The transfer of a collection of bird skins from the Solomon Islands via Australia to Italy in the late 19th century. 10 pp. Zoologische Mededelingen Leiden 79 (3): 69-78.
 
PSC 135
McAllister D. E., 1970: The fresh and brackish water fishes. 6 pp.
 
RAM 65051
McLean C. A., Moussalli A., Sass S., Stuart-Fox D., 2013: Taxonomic assessment of the Ctenophorus decresii complex (Reptilia: Agamidae) reveals a new species of Dragon Lizard from Western New South Wales. 13 pp. Records of the Australian Museum 65(3): 51-63.
 
80834
Mearns E. A., 1896: Preliminary description of a new subgenus and six new species and subspecies of hares, from the mexican border of the United States. 15 pp.
 
AVE 146
Mearns E. A., 1896: Preliminary diagnoses of new mammals from the Mexican border of the United States. 5 pp.
 
AVE 147
Mearns E. A., 1902: Descriptions of three new birds from the Southern United States. 12 pp.
 
80835
Mearns E. A., 1909: A list of birds collected by Dr. Paul Bartsch in the Philippine Islands, Borneo, Guam, and Midway Island, with descriptions of three new forms. 16 pp.
 
AVE 148
Mearns E. A., 1909: Additions to the list of Philippine birds, with descriptions of new and rare species. 13 pp.
 
80836
Mearns E. A., 1913: Descriptions of new African birds of the genera Francolinus, Chalcopelia, Cinnyris, Chalcomitra, Anthreptes, Estrilda, Halcyon, Melittophagus, and Colius. 14 pp.
 
PSC 199
Mees G. F., 1984: A note on the genus Tocantinsia (Pisces, Nematognathi, Auchenipteridae). 4 pp. Amazoniana 9(1): 31-34.
 
ZME 61137
Mees G. F., 1987: On the generic names Gonydactylus Kuhl van Hasselt, 1822, Goniodactylus Schlegel, 1826, and Gonyodactylus Wagler, 1830 (Reptilia: Sauria: Gekkonidae). 4 pp. [REP 156] Zoologische Mededelingen 61(10): 137-140.