MEXICAN TAILLESS AMPHIBIANS 55 



In describing Bujo agua, LatreUle seems to have confused the South 

 American Bufo marinus with the Cuban Bufo peltocephalus . It is 

 stated that this enormous toad has been found principally in Brazil 

 and in Cuba. Reference is also made to the fact that the figure in 

 Seba's "Thesaurus," which is the basis for Bufo marinus (Linnaeus), 

 is hardly recognizable. Latreille does state, however, that his Bufo 

 ugua is the same toad as the Bufo marinus of authors, or "L'epaule- 

 armee." One might infer from these remarks that the figure and 

 description of Bufo agua was based upon some specimen in the "Cabi- 

 net d'Histoire Naturelle du Jardin du Roi " in Paris. It would appear 

 from the synonymy listed under Bufo agua in Daudin's natural history 

 of frogs and toads that this author had failed to recognize the essen- 

 tial characters of this species. In the eighth volume of his natural 

 history of reptiles, which was published during the preceding year, 

 Daudin curiously enough does differentiate between "Le Crapaud 

 fipaule-Armee " and "Le Crapaud Agua." The synonymy given for 

 "Le Crapaud Epaule-Armee " is correct and includes Seba's "The- 

 saurus," pi. 76, fig. 1. It should be noted that "Le Crapaud Agua" in 

 this last-mentioned publication of Daudin is a quite different batra- 

 chian from Bufo agua Latreille. 



Wiegmann's Bufo horribilis is based on specimens collected by 

 Ferdinand Deppe and Graf von Sack in Mexico. The four cotypes 

 (M.N.B. Nos. 3479-81) collected by Deppe are all toads of 

 moderate size. The one collected at Misantla (No. 3479) has a head- 

 and-body length of about 167 mm. ; an annotation on the label states 

 that this species is No. 57 in the sale catalogue of Deppe's brother. 

 Of the two (No. 3481) labeled as coming from Vera Cruz, the largest 

 has a body length of about 110 mm. The largest of the cotypes 

 (No. 3480) is without definite locality and has a body length of about 

 125 mm. The fifth cotype (No. 3493) is a yoimg individual collected 

 in Mexico by Graf von Sack and F. Deppe that lacks cranial 

 crests and has a head-and-body length of not more than 50 mm. 



Full-grown toads with a rather rough skin and with triangular 

 parotoid glands as large as or larger than the side of the head and 

 studded with large pores may be referred without question to this 

 species. In general, the coloration of Bufo marinus is quite variable, 

 ranging through the various shades of brown, including yellowish, 

 reddish, or even blackish, and occasionally greenish olive; upperparts 

 with or without large black insuliform spots, which when present are 

 usually edged with pale yellow; a light vertebral line occasionally 

 visible; arms and legs of immature individuals usually banded with 

 dark brown; underparts dingy white or yellow. The interorbital 

 space is wider than the upper eyelid and the cranial crests are often 

 quite prominent in old adults. Sexually mature males have numerous 



