160 ENGYSTOMATID^. 



with a rudiment of web, the tips bluut ; 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. 



a. J . Costa Rica. O. Salvin, Esq. [C.J. 



b-c. 2 • Costa Rica. 



d. 2- Para. Berlin Museum [P.]. 



2. Hypopaclms inguiiialis. 



Tlvpopaclius inguinalis, Cope, Pi-oc. Atn. Phil. S'oc. 1869, p. 160 ; 



'Brocchi, Miss. Sc. Mex., Batr. pi. 10. f. 3 & 4. 

 Eugystonia iuguiualis, Brocchi, Bull. Soc. Philom. (j) i. p. ISO. 



Snout short, subacuminate, slightly prominent, once and a half 

 the diameter of the eye. Fore limb much longer than its dista,nce 

 from the tip of the snout ; fingers moderately elongate. Hind limb 

 moderately stout : it being carried forwards along the bod}-, 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 car- 

 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; (Ecuador?). 



u-e, f-h. d , 2 , & liRi-- Coban, Vera Paz. O. Salvin, Esq, [C.]. 



i. 2. Ecuador. Mr. Eraser [C.]. 



9. ENGYSTOMA*. 



Engystoma, Fitzing. N. Classif. Bept. p. 65; Gunth. Cat. p. 51. 

 Microps, Wagl. Isis, 1828, p. 744, and Syst. Amph. p. 200. 

 Slenoceplialus, Tschudi, Batr. p. 80. 

 Engystoma, sp., Bum. ^- Bihi: viii. p. 738; Cojk, Jouvn. Ac. Philad. 



(2) vi. 1807, p. 194. 

 Systoma, sp.. Cope, I, c. 



* Engystoma rugosum, Dum. & Bibr. p. 744. — S. United States. 



