160 ENGYSTOMATIDJ,. 



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 

 mediaii line commencing from the chin. 

 C. America ; Para. 



0. Salvin, Esq. [C.]. 



Beriin Museum [P.]. 



2. Hypopachus inguinalis. 



TlyiDopaclius inguinalis, Cope, Pmc. Am. Phil. Soc. 1869, p. 160 ; 



Brucchi, Miss. 8c. Me.r., Bcitr. pi. 10. f. 3 & 4. 

 Eugystoma inguinahs, Brocchi, Bull. Soc. Pkilom. (7) i. p. 189. 



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

 the diameter of the eye. Pore 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. 8kin 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 ?). 



a-e,f-h. (S , $ , & hgr. Cobau, Vera Paz. O. Salvin, Esq. [C.]. 



«. $. Ecuador. Mr. Eraser [C.]. 



9. ENGYSTOMA*. 



Engystoma, Fitzing. N. C'/assif. Pept. p. 65; Gunth. Cat. p. 51. 

 Microps, Wagl. Isi's, 1828, p. 744, and Syst. Ampli. p. 200. 

 Steuocephalus, Tschudi, Batr. p. 86. 

 Engystoma, sp., Dinn. 4" Bihv. viii. p. 738; Cope, Jouni. Ac. Philad. 



(2) vi. 1867, p. 194. 

 Systoma, sp., Cope, I. c. 



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



