40 



BULLETIN 160, UNITED STATES NATIONAL MUSEUM 



valley of the Gila and Colorado must be ignored, because it was not 

 taken by Scliott. The selection of either of the above as the basis 

 for Girard's description might lead to conflicting opinions, and since 

 neither of these specimens has ever been formally designated as the 

 type, the two specimens (U.S.N.M. No. 2571) collected by Schott 

 and the one (U.S.N.M. No. 2572) collected by Major Thomas are 

 hereby designated as the cotypes of Bujo alvarius. The specimens 

 collected by Schott can not now be located. The one received from 

 Thomas is quite well preserved and conforms in most details with the 

 actual figures published by Girard. 



Specimens examined. — One (U.S.N.M. No. 21063), collected by 

 E. C. Merton, October 3, 1893, in Guadalupe Canyon, Sonora, in 

 bed of dry wash about 3 miles southwest of Monument No. 73. 



BUFO CANAUFERUS Cope 



Figure 5 



1877. Bufo canaliferus Cope, Proc. Amer. Philos. Soc, 

 vol. 17, uo. 100, p. 85, July 20.— Brocchi, 1882, 

 Mission scientifique au Mexique et dans TAm^rique 

 Centrale, recherches zoologiques, pt. 3, sect. 2, p. 74, 

 pi. 8, figs. 2, 2a-b.— NiEDEN, 1923, Das Tierreich, 

 Lief. 46, Amphibia, Anura I, pp. 76, 131. 



Type locality. — Tehuantepec, State of Oaxaca, 

 Mexico. 



Range. — Tliis species has been collected at 

 localities in the States of Vera Cruz, Oaxaca, 

 and Chiapas, the most northerly record being 

 Orizaba. It is reported from Tabasco (Dug6s) 

 and from Cerro de Valtierra (Giinther) in 

 Chiapas. The exact limits of its range are unknown. The most 

 southerly record is Patulul in Guatemala. 



Remarks. — This is a small light-colored toad, with a whitish verte- 

 bral stripe, on each side of which are dark-colored spots. It has a 

 narrow head, low cranial crests, distinct tympanum, and elongate 

 parotoid glands. The name chosen for this toad by Cope is in allu- 

 sion to the once contemplated canal on the Isthmus of Tehuantepec. 

 It seems to be a rare toad in American collections. There are no 

 published observations on the habits and life history of this species. 

 The cotypes of this species (U.S.N.M. Nos. 30315-24) were collected 

 by Francis Sumichrast. Notwithstanding their long immersion in a 

 preserving fluid, most of them have a fairly well-preserved color 

 pattern and are otherwise in very good condition. 

 Specimens examined. — Seventeen as follows: 



Figure 5.— Head of Bufo 

 canaliferus (U. S.N.M. No. 

 30322) from Tehuantepec, 

 Oaxaca, Mexico: a. Lateral 

 view; b, dorsal view. Type 

 specimon 



