5. DERMOPHIS. 6. GTMNOPIS. 99 



Dermophis brevirostris, Peters, eod. he. 1879, p. 937. 

 thomensis, Peters, I. c. p. 938, & 1880, p. 223. 



Snout subacuminate, moderately prominent ; eyes distinct ; ten- 

 tacle in front of and below the eye. Body moderately elongate ; 

 125 to 145 circular folds, those on the anterior two thirds and on 

 the hindermost part of the body complete, the others alternately 

 complete or incomplete. Tail indistinct, rounded. Yellowish, 

 brownish, or greyish. Total length 320 millim. ; greatest diameter 

 of body 15 millim. 



West Africa. 



4. Dermophis ? brasiliensis. 



Siphonops brasiliensis, Reinh. 8f Liltk. Vidensk. Meddel. 1861, p. 202. 

 Dermophis ? brasiliensis, Peters, Mon. Berl. Ac. 1879, p. 938. 



Tentacle near the eye, in front and below. Head narrow, elon- 

 gate. 133 annuli, the 20 anterior and the 13 posterior complete, 

 the others incomplete. Total length forty-six times the greatest 

 diameter. Dark grey. 



Brazil. 



5. Dermophis ? proximus. 



Siphonops proximus, Cope, Proc. Amer. Philos. Soc. xvii. 1877, p. 90. 

 Dermophis ? proximus, Peters, I. c. 



Much resembling D. mexieanus, but the general form more elon- 

 gate and slender, and the tentacle close to the eye, 129 annuli. Total 

 length 425 millim. ; diameter 17 millim. 



Coast of Eastern Costa Rica. 



6. Dermophis ? simus. 



Siphonops simus, Cope, I. c. p. 91. 

 Dermophis ? simus, Peters, I. c. 



Snout wide, truncate ; tentacle close to the eye. Annuli complete, 

 228. Dark brown, below a little paler. Total length 308 millim. ; 

 diameter at middle 11 millim. 



Costa Eica. 



6. GYMN0PIS. 



Ehinatrema, sp., A. Dum. Mem. Soc. Cherb. ix. p. 320. 

 Gymnopis, Peters, Mon. Berl. Ac. 1874, p. 216, & 1879, p. 938. 



Squamosals in contact with parietals. Eyes overroofed by bone. 

 Two series of teeth in the lower jaw. Tentacle globular, surrounded 

 by a circular groove, situated considerably behind the nostril. Cy- 

 cloid scales imbedded in the skin. 



Tropical America. 



