44 



BULLETIN 160, UNITED STATES NATIONAL MUSEUM 



had found "abundant on the plains north of the Missouri River east 

 of Fort Benton," as a new species, Bufo dipternus. The following 

 is quoted from the original description: 



There are two faint straight supraorbital ridges, and a postorbital but no 

 supratympanic ridge. The supraorbitals are united by the enlargement of the 

 posterior part of the prefrontal bones, which forms quite a tuberosity in adults. 



In contradiction to this published description, Cope in 1889 stated 

 that a large young specimen of this species served as the type and that 

 "although an inch and a half long, this individual had not developed 

 a trace of the cranial crests." Nothing is known in regard to the 

 subsequent history of the material upon which Cope based this name. 



Specimens examined. — Twenty, as follows : 



Bufo cognatus 



BUFO COMPACTILIS Wiegmann 



Figure S 



1833. Bufo compactilis Wiegmann, Isis von Oken, vol. 26, pt. 7, pp. 661, 662. — 

 Peters, W., 1863, Monatsber. k. preuss. Akad. Wiss. Berlin, p. 80.— 

 Cope, 1889, U. S. Nat. Mus. Bull. 34, p. 272, fig. 65.— Dickerson, 1906, 

 The frog book, pp. 102-104, figs. 93-98.— Nieden, 1923, Das Tierreich, 

 Lief. 46, Amphibia, Anura I, pp. 74, 108. 



1854. Bufo speciosus Girard, Proc. Acad. Nat. Sci. Philadelphia, vol. 7, pp. 

 85-87, May (valley of Rio Bravo [Rio Grande del Norte] and not uncom- 

 mon in the province of New Leon). — Baird, 1859, Report on the United 

 States and Mexican Boundary Survey, toI. 2, Reptiles, pp. 26, 35, pi. 40, 

 figs. 5-11. 



1858. Bufo anomalus Gunther, Catalogue of the Batrachia Salientia in the 

 collection of the British Museum, p. 57 (Mexico). 



1877. Bufo levifrons Brocchi, Bull. Soc. Philom. Paris, ser. 7, vol. 1, no. 4, 

 pp. 187, 188 (Mexique). — Brocchi, 1882, Mission scientifique au Mexique 

 et dans I'Amerique Centrale, recherches zoologiques, pt. 3, sect. 2, pp. 

 70, 71, pi. 6, fig. 2. 



1879. Bufo mexicanus Brocchi, Bull. Soc. Philom. Paris, ser. 7, vol. 3, no. 1, 

 pp. 23, 24 (Mexique). — Brocchi, 1882, Mission scientifique au Mexique 

 et dans I'Amerique Centrale, recherches zoologiques, pt. 3, sect. 2, p. 

 85, pi. 8, figs. 3, 3a, 3b. 



