160 ENGYSTOMATID A. 
with a rudiment of web, the tips blunt; subarticular tubercles dis- 
tinct; two very prominent, oval, compressed metatarsal tubercles, 
the inner very large. Skin perfectly smooth; a fold across the 
head, behind the eyes. Brown above, immaculate or with darker 
markings; sides and hinder side of thighs marbled with dark 
brown; a very narrow, indistinct, light vertebral line; beneath 
brown, spotted with yellowish; generally a very narrow light 
median line commencing from the chin. 
C. America; Para. 
m..22 Costa Rica. O. Salvin, Esq. [C.]. 
b-c. Q. Costa Rica. 
d. Q. Para. Berlin Museum [P.]. 
2. Hypopachus inguinalis. 
Hypopachus inguinalis, Cope, Proc. Am. Phil. Soc. 1869, p. 166; 
Brocchi, Miss. Sc. Mex., Batr, pl. 10. £.3 & 4. 
Engystoma inguinalis, Brocchi, Bull. Soc, Philom, (7) i. p. 189. 
Snout short, subacuminate, slightly prominent, once and a half 
_ the diameter of the eye. Fore limb much longer than its distance 
from the tip of the snout ; fingers moderately elongate. Hind limb 
moderately stout; it being carried forwards along the body, the 
tibio-tarsal articulation reaches the shoulder; toes with a rudiment 
of web, the tips blunt; subarticular tubercles distinct; two very 
prominent, blunt metatarsal tubercles. Skin smooth, or with small 
indistinct tubercles; a fold across the head, behind the eyes. Olive- 
brown or reddish above, marbled with darker; a very narrow caz- 
mine line from the tip of the snout to the vent; another along the 
inner side of the hind limb; a carmine line from the eye to the root 
of the arm; beneath whitish, marbled with black; generally a very 
narrow light median line commencing from the chin, meeting 
another, angular one, across the chest. Male with ‘a subgular 
vocal sac. 
Guatemala; (Heuador ?). 
a-e, f-h. 3, 2,& her. Coban, Vera Paz. O. Salvin, Esq. [C.]. 
ao he Keuador, Mr. Fraser [C. ]. 
9, ENGYSTOMA*. 
Engystoma, Fitzing. N. Classif. Rept. p. 65; Giinth. Cat. p. 51. 
Microps, Wagl, Ists, 1828, p. 744, and Syst. Amph. p. 200. 
Stenocephalus, 7'schud?, Batr. p. 86. 
Engystoma, sp., Dum. § Bibr. viii. p. 788; Cope, Jown. Ac. Philad, 
(2) vi. 1867, p. 194, 
Systoma, sp., Cope, J. c, 
* Engystoma rugosum, Dum. & Bibr. p- 744.—8. United States. 
