52 PROCEEDINGS OF THE ACADEMY OF 



Loreal region straight, nearly vertical re c t if r en i s. 



Front swollen bombifrons. 



/?/?. Length of tibia four times frontal breadth. 



Muzzle truncate in profile hammondii, 



eta.. A gland on each side of thorax, near axilla. 

 Tympanum one-half the extent of the eje holbrookii. 



S. multiplicatus Cope, sp nov. 



Form broad, squat. Head very short ; profile rapidly descending ; maxillary 

 outlines acuminate, oval ; muzzle thick, rounded. Eyes very prominent. From 

 these a strong fold passes posterior to the angle of the mouth and across the 

 gular region ; tympanum covered by a portion of the paratoid gland anterior to 

 this. Paratoid proper very large, extending beyond scapula, bent upon the 

 side; bounded inferiorly by a strong fold, which extends from the one above 

 mentioned to the groin. Below this, on the sides, are two or more others. Skin 

 of upper surfaces coarsely tuberculous, that of the crown thick, of the extremi- 

 ties nearly smooth. A large gland occupies most of length of tibia. Abdomen 

 minutely, pubic region coarsely, rugose. Cuneiform process rather short, very 

 prominent. Vomerine teeth in fasciculi opposite posterior margins of choanae ; 

 the latter smaller than ostia pharyngea. Tongue entire, with a narrow, free 

 anterior border; on third free posteriorly. 



Dimensions of a $. From end of muzzle to vent 5" 1"'; muzzle to behind 

 tympanum 16'"; length of anterior extremity 1" 6'" ; of posterior extremity 

 5" 4'". 



Color in spirits: above ashy-brown, below yellowish-ash. 



Habitat. Valley of Mexico. Sent by Mr. Jno. Potts to the Mus. Smith- 

 sonian, (No. 3694.) 



This species is very bufonine in aspect, and might be regarded as represent- 

 ing a different genus from the type of holbrookii were it not for the exist- 

 ence of c o u c h i i and bombifrons. 



S. c o u c h i i Baird, Proc. A. N. S., Phila., 1854, p. 62. Rept. U. S. and Mex. 

 Bound. Surv., Reptiles, p. 28, pi. XXXV. figs. 1-6. 



Form stout ; head more elongate, acuminate oval; width Jof frontal region 

 greater than from lip to nares, one-third the length of the tibia. Profile gradu- 

 ally descending ; front plane, muzzle projecting, rounded. Anterior border of 

 tympanum scarcely distinguishable. Eyes very prominent. Vomerine teeth 

 opposite middle of choanae, which equal ostia pharyngea. Tongue slightly 

 emarginate. Paratoid gland flat, descending on the side. Skin tuberculous, 

 especially on the sides ; sometimes a slight cryptiferous thickening of integu- 

 ment of tibia ; none on the sides of the pectoral region. A posttympanic and 

 an antepectoral fold. Abdomen slightly rugose ; gular region smooth. Cunei- 

 form process elongate. Toes fully palmate. 



Dimensions of a <j\ From end of muzzle to vent 5" 5"'; from same to 

 behind tympanum 2''. Anterior extremity 3" 5'" ; posterior extremity 5" 6"'. 



Color above yellowish, with irregular brown bands , which converge between 

 and behind the orbits; others diverge on the flanks, beginning at the orbits ; 

 one from same point to lip, and one on canthus rostralis. There is a confluence 

 of dorsal bands near the sacrum. A light band on outer face of tarsus and toe ; 

 hand yellowish. 



Habitat. Tamaulipas. Mus. Smithsonian, (3713.) Lieut. Couch. 



S. v a r i n s Cope, sp. nov. 



Outline of muzzle acuminate-oval ; the end little depressed, nearly vertical 

 in profile, distance from lip to nostril less than frontal breadth ; the latter 

 one-third tibia. Canthus rostralis obsolete, approximate ; loreal region con- 

 vex, very oblique in transverse section. Eyes prominent. Tympanum concealed 

 or distinct, one-third extent of eye. Vomerine teeth opposite posterior border 



[Mar. 



