5. DEEMOPHIS. 6. OTMNOPIS. 99 



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

 thomeimis, 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 t-vro thirds and on 

 the hindermost part of the body complete, the others alternately 

 complete or incomplete. Tail indistinct, rounded. Yellowish, 

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

 of body 15 millim. 



West Africa. 



4. Sermophis ? brasiliensis. 



Siphonops brasiliensis, Peinh. ^ IMk. Vidensk. Meddel. 1861, p. 202. 

 Dermopnis ? brasiliensis, Peters, Mon. Perl. 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. 



S. Dermophis ? proximus. 



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

 Dermophis P proximus, Peters, I. c. 



Much resembling D. mexicanus, 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. DermopMs ? 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 Bica. 



6. GYMNOPIS. 



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

 Gymnopis, Peters, Mon. Perl. 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. 



