Richards W. R., 1967: The Pterocomma of Canada and Greenland with notes on the phyletic position of the Pterocommatini (Homoptera: Aphididae). 26 pp. 

 Richards W. R., 1968: A new species of Iziphya from Ontario and Quebec, with a review of the neartic species (Homoptera: Aphididae). 20 pp. 

 Richards W. R., 1968: A revision of the nearctic genus Neosymydobius (Homoptera: Aphididae). 16 pp. 

 Richards W. R., 1968: A revision of the world fauna of Tuberculatus, with descriptions of two new species from China (Homoptera: Aphididae). 36 pp. 

 Richards W. R., 1968: Glyphina longiseta, a new alder-infesting aphid from Nova Scotia (Homoptera: Aphididae). 4 pp. 

 Richards W. R., 1968: New combination and recescription of Monellia californica with a key to the species of Monelliopsis (Homoptera: Aphididae). 4 pp. 

 Richards W. R., 1969: A review of the Holarctic genus Roepkea with descriptions of four new Nearctic species (Homoptera: Aphididae). 42 pp. 

 Richardson H., : Descriptions of a new genus and species of Janiridae from the Northwest Pacific. 3 pp. 

 Richmond C. W., 1895: Description of a new species of Ant Thrush from Nicaragua. 2 pp. 

 Richmond C. W., 1895: Partial list of birds collected at Alta Mira, Mexico, by Mr. Frank B. Armstrong. 6 pp. 

 Richmond C. W., 1896: Catalogue of a collection of birds made by Doctor W. L. Abbott in Eastern Turkestan, the Thian-Shan Mountains, and Tagdumbash Pamir, Central Asia, with notes on some of the species. 23 pp. 

 Richmond C. W., 1897: Catalogue of a collection of birds made by Doctor W. L. Abbott in Madagascar, with descriptions of three new species. 18 pp. 

 Richmond C. W., 1900: Description of a new bird of the genus Dendrornis. 2 pp. 

 Richmond C. W., 1900: Descriptions of three new birds from Lower. 3 pp. 

 Richmond C. W., 1903: Birds collected by Dr. W. L. Abbott and Mr. C. B. Kloss in the Andaman and Nicobar islands. 28 pp. 

 Richmond C. W., 1917: Generic names applied to birds during the years 1906 to 1915, inclusive, with additions and corrections to Waterhouse’s “Index Generum Avium”. 72 pp. 

 Richter M., Breitkreuz C., 1997: Permian fish remains from the peine formation of northern Chile. 14 pp. 

 Richter V. A., 1975: 375. Cleridae, Derodontidae (Coleoptera). Ergebnisse der zoologischen Forschungen von Dr. Z. Kaszab in der Mongolei. 4 pp. [M48] Folia Entomologica Hungarica (S.N.) 28(2): 341-344.

 Richter V. A., 1975: On the fauna of fruit-flies (Diptera: Tephritidae) of Mongolia. I. 21 pp. (in Russian). [61080] Nasekomye Mongolii 3: 582-602.

 Rickenbach A., 1969: Quelqeus données nouvelles sur le Culicidae (Diptera, Nematocera) de la République centrafricaine. 15 pp. 

 Ričl P., 1985: Tesaříkovití na jižním okraji Prahy. 3 pp. Zprávy Čs. spol. entomol. při ČSAV 21: 53-56.

 Ridgway R., 1889: A review of the genus Sclerurus of Swainson. 11 pp. 

 Ridgway R., 1889: A review of the genus Xiphocolaptes of Lesson. 20 pp. Proceedings of the United States National Museum for the year 1889. Volume XII.

 Ridgway R., 1890: Observations on the Farallon rail (Porzana jamaicensis coturniculus Baird). 3 pp. 

 Ridgway R., 1896: Characters of a new American family of Passerine birds. 2 pp. 

 Ridgway R., 1896: Description of a new species of ground warbler from Eastern Mexico. 2 pp. 

 Ridgway R., 1896: Description of a new subspecies of the genus Peucedramus, Coues. 1 pp. 

 Ridgway R., 1896: Preliminary description of some new birds from the Galapagos Archipelago. 2 pp. 

 Riedel A., 1998: Catalogue and bibliography of the genus Euops Schoenherr (Insecta, Coleoptera, Curculionidea, Attelabidae). 28 pp. Spixiana 21(2): 97-124.

 Riedel M., 2004: Eine neue Art der Gattung Anisobas Wesmael, 1844 [1845] aus Norwegen (Hymenoptera, Ichneumonidae, Ichneumoninae, Listrodromini). 4 pp. [M23] Entomofauna 25(6): 93-96.

 Riedel M., 2007: 2. Beitrag zur Faunistik der deutschen Ichneumoniden (Hymenoptera: Ichneumonidae). 3 pp. (in German). Nachrichtenblatt der Bayerischen Entomologen 56(3-4): 109-111.

 Riedel M., Wall I., 2010: Cosmophorus regius un Streblocera antennata neu für Deutschland (Hymenoptera: Braconidae). 2 pp. Nachrichtenblatt der Bayerischen Entomologen 59(1-2): 39-40.

 Riedel W., 1960: Nowe dla Polski gatunki chruscików (Trichoptera). 5 pp. Fragmenta Faunistica 8/21: 315-319.

 Riedl T., 1965: Matériaux pour la connaissance der Momphides paléarctiques (Lepidoptera). Partie III. Étude sur quelques Momphides européens. 54 pp. [31305] Polskie Pismo Entomologiczne35: 419-468.

 Riedl T., 1967: Matériaux pour la connaissance des Momphidae paléarctiques (Lepidoptera). Partie VIII. Distribition des Momphidae en Pologne. 22 pp. [31306] Polskie Pismo Entomologiczne 37(1): 25-46.

 Riedl T., 1968: Materialy do znajomosci szkodliwych motyli (Lepidoptera) sadów. 12 pp. [M66] 

 Riedl T., 1968: Materialy do znajomosci szkodliwych motyli (Lepidoptera) sadów. 12 pp. [M66] [LEP 2957] Polskie Pismo Entomologiczne 38: 417-428.

 Riedl T., 1994: Liste des taxa de six familles des lépidopteres Gelechioidea paléarctiques (Stathmopodidae, Batrachedridae, Agonoxenidae, Momphidae, Cosmopterigidae, Chrysopeleiidae). 16 pp. Annals of the Upper Silesian Museum in Bytom 5: 9-24.

 Rieger P. J., 1998: Desenvolvimento larval de Uca (Minuca) burgersi Holthuis (Crustacea, Decapoda, Ocypodidae), em laboratório. 30 pp. Revta bras. Zool. 15(3): 727-756.

 Rieger P. J., Giraldi J. L. B., 1997: Pagurus brevidactylus (Stimpson) novo registro de Anomura (Decapoda, Paguridae) para o litoral Santa Catarina, Brasil. 2 pp. Revta bras. Zool. 14(2): 511-512.

 Rieger P. J., Vieira R. R. R., 1997: Desenvolvimento larval de Cyrtograpsus angulatus Dana (Crustacea, Decapoda, Graspidae) em laboratório. 23 pp. Revta bras. Zool. 14(3): 601-623.

 Riff D., Kellner A. W. A., 2001: On the dentition of Baurusuchus pachecoi price (Crocodyliformes, Metasuchia) from the upper cretaceous of Brazil. 15 pp. (in English). Boletim do Museu Nacional (N.S.) Geologia 59: 1-15.

 Rifkind J., 1996: New species of ant-like Enoclerus Gahan from Mexico (Coleoptera: Cleridae). 9 pp. [14673] [M08] Entomological Problems 27(1): 65-73.

 Righi G., 1989: Tres Oligochaeta, Glossoscolecidae da Amazônia. 7 pp. Amazoniana 10(4): 393-399.

 Rignano E., 1908: Die Zentroepigenese und die nervöse Natur der Lebenserscheinung. 22 pp. (in German). 

 Rignano E., 1909: La mémoire biologique en énergétique. 29 pp. (in French). 

 Rignano E., 1911: De l’attention. I.ére partie: Contraste affectif et unité de conscience. 28 pp. (in French). 

 Rignano E., 1912: De l’attention. II.e partie: Vividité et connexion. 19 pp. (in French). 

 Rignano E., 1912: Le rôle des “Théoriciens” dans les sciences biologiques et sociologiques. 16 pp. (in French). 

 Rignano E., 1926: Les manifestations finalistes de la vie. 20 pp. (in French).