Gloyd, Howard K. (1948): Description of a Neglected Subspecies of Rattlesnake from Mexico. - Natural History Miscellanea, Chicago, 17: 1-4.

"In a treatise on rattlesnakes, it was pointed out that two specimens of Crotalus basiliscus (Cope) from Oaxaca differ significantly from other representatives of the species then available for study. ..."

Crotalus basiliscus oaxacus, ssp. nov; Diagnosis, Type Specimens, Description of Holotype, Description of Paratype, Affinities, 3 SW-Abbildungen.
 

Haas, Winfried: Zur Biologie von Bufo kelaartii Günther, 1859. - elaphe, Rheinbach, 7 (2): 16-19.
 

Haas, Winfried: Zur Reproduktionsbiologie von Bufo cophotus Boulenger, 1900. - herpetofauna, Weinstadt, 21 (118): 19-21. Mit einigen rot markierten Wörtern.
 

Hemmer, Helmut & Wolfgang Böhme (1976): Zwischenbericht über die innerartliche Variabilität der Erdkröte (Bufo bufo L.). - Salamandra, Frankfurt/M., 12 (4): 194-201.


 

Hoogmoed, Marinus S. (1977): On the presence of Bufo nasicus Werner in Guiana, with a redescription of the species on the basis of recently collected material. - Zool. Mededelingen, Leiden, 51 (16): 265-275.

During research on material recently collected in Guyana and in Venezuelan Guinea, several specimens of the rare toad Bufo nasicus Werner, thus far only known from the holotype without origin, were discovered. ... This species is a member of the Bufo typhomuis group.
 

Hoogmoed, Marinus S. (1989): On the identity of some toads of the genus Bufo from Ecuador, with additional remarks on Andinophryne colomai Hoogmoed, 1985 (Amphibia: Anura: Bufonidae). - Zool. Verhandelingen, Leiden, No. 250: 1-32.

Keywords: Anura, Bufonidae, Bufo blombergi, Bufo caeruleocellatus, Bufo caeruleostictus, Bufo chanchanensis, Bufo haematiticus, Bufo hypomelas, Bufo intermedius, Andinophryne colomai, Andes, Neotropics.
 

Hoogmoed, Marinus S. (1990): Biosystematics of South American Bufonidae, with special reference to the Bufo "typhonius" group. - Vertebrats in the tropics, Bonn: 113-123.

Key words: Amphibia, Anura, Bufonidae, Bufo typhonius, South America.
 

Inger, Robert I. (1964): Two new Species of Frogs from Borneo. - Fieldiana Zoolg., Chicago, 44 (20): 151-159.

Rana ibanorum, Bufo juxtasper.