436 PELOBATID*. 



6. Scaphiopus dugesii. 



Scaphiopus dup:esi, Brocchi, Bull. Soc. Philom. (7) iii. 1879, p. 23, 

 and Miss. Su. Mex., Batr. p. 94, pi. 9. f. 4. 



Tongue subcircular, entire. Vomerine teeth in two small groups 

 on a level with the hinder edge of the choanse. Head small ; snout 

 rounded, rather prominent, without oanthus rostralis ; nostril nearer 

 the tip of the snout than the eye ; interorhital space as bread as the 

 upper eyelid ; upper surface of head smooth ; tympanum concealed. 

 Eingers short, with or without a slight rudiment of web, first longer 

 than second ; toes short, the web considerably emarginate and ex- 

 tending only as a fringe to the tip of the fourth toe ; subartieular 

 tubercles indistinct ; two metacarpal tubercles ; metatarsal shovel as 

 long as first toe. The hind limb being carried forwards along the 

 body, the tibio-tarsal articulation reaches the shoulder. Head and 

 back tubercular ; limbs and inferior surfaces smooth ; a curved fold 

 above the tympanum ; parotoids indistinct. Olive above, spotted or 

 marbled with darker ; metatarsal shovel black. Male with a sub- 

 gular vocal sac, and, during the breeding-season, black rugosities on 

 the inner side of the first two fingers. 

 Mexico. 



a-b. (S 2 . Mexico. 



7. Scaphiopus multiplicatus. 



Scaphiopus multiplicatus, Cope, Proc. Ac. Philad. 1863, p. 52; 



Brocchi, Miss. So. Mex., Batr. p. 25. 

 Spea multiplicata, Cope, Journ. Ac. Philad. (2) vi, 1866, p. 81. 



Tongue entire. Vomerine teeth in two fasciculi opposite posterior 

 margins of choanse. Head very short ; snout thick, rounded ; tym- 

 panum covered by a portion of the parotoid gland anterior to this. 

 Metatarsal tubercle rather short, very prominent. Skin of upper 

 surfaces coarsely'tuberculous, that of the crown thick, of the extre- 

 mities nearly smooth ; parotoid very large, extending beyond scapula, 

 bent upon the side, bounded inferiorly by a strong fold, which 

 extends to the groin ; below this, on the sides, are two or more 

 others ; from the eye a strong fold passes posterior to the angle of 

 the mouth and across the gular region ; a large gland occupies most 

 of the length of tibia ; abdomen minutely, pubic region coarsely, 

 rugose. Above ashy brown, below yellowish ash. 



Mexico. 



8. Scaphiopus stagualis. 



Spea stagnalis, Cope, Yarrow's Pep. V. Zool. p. 625, pi. 26. f. 6-8. 

 Tongue round, entire. Vomerine teeth between the choanse, either 

 anteriorly or posteriorly. Eustachian tubes exceedingly minute, 

 much smaller than the choanse. Snout projecting beyond mouth ; 

 nostrils terminal ; tympanum concealed. Web of hind foot reaching 

 middle of longest toe; tarsal shovel large. The hind Hmb being 



