436 PELOBATIDZ. 
6. Scaphiopus dugesii. 
Scaphiopus dugesi, Broechi, Bull. Soc. Philom. (7) iii. 1879, p. 25, 
and Miss. Se. Mex., Baty. p. 94, pl. 9. f. 4. 
Tongue subcircular, entire. Vomerine teeth in two small groups 
on a leyel with the hinder edge of the choane. Head small; snout 
rounded, rather prominent, without canthus rostralis ; nostril nearer 
the tip of the snout than the eye; interorbital space as broad as the 
upper eyelid; upper surface of head smooth ; tympanum concealed. 
Fingers 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; subarticular 
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. SQ. Mexico. 
7. Scaphiopus multiplicatus. 
Scaphiopus multiplicatus, Cope, Proc. Ac. Philad. 1863, p. 52; 
Brocchi, Miss. Sc. 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 choanze. 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 stagnalis. 
Spea stagnalis, Cope, Varrow’s Rep. V. Zool. p. 525, pl. 25. f. 6-8. 
Tongue round, entire. Vomerine teeth between the choane, either 
anteriorly or posteriorly. Eustachian tubes exceedingly minute, 
much smaller than the choane. Snout projecting beyond mouth; 
nostrils terminal ; tympanum concealed. Web of hind foot reaching 
middle of longest toe; tarsal shovel large. The hind limb being 
