1895.] ME. G. A. BOULEXGEE OX APOD.Ui BATEACHIAN'S. 405 



pi. i. fig. 10 ; Brocchi, Miss. Sc. Mex., Batr. p. 120, pi, xxi. fig. 2 

 (1882). 



Dei-mophis mexicanus, Peters, Mou. Berl. Ac. 1879, p. 937, 

 pi. — . tig. 6 ; Bouleng. Cat. p. 98, pi. Wii. fig. 2 (1882). 



Mexico and Central America. 



*3. DeEMOPHIS GEEGOEII. 



DermopMs fjrecjorii, Bouleug. P. Z. S. 1891, p, 616, pi. xl. fig. 1 

 (1895). 



Ngatana, East Africa. 



*4. DeEJIOPHIS THOJIEIfSIS. 



Siphonops thomensis, Bocage, Jorn. Sc. Lisb. iv. 1873, p. 224. 



SipTionops brevirostris, Peters, 3Ion. Berl. Ac. 1874, p. 617, 

 pi. i. fig. 2. 



Dermophis brevirostris, Peters, Mou. Berl. Ac. 1879, p. 937. 



Demiophis thometms. Peters, I. c. p. 938, and 1880, p. 223 ; 

 Bouleng. Cat. p. 98 (1882) ; Greef, Sitzb. Ges. Marburg, 1884, 

 p. 15 ; Bedriaga, Amph. & Eept. I. Guin.p. 13 (1892). 



S. Thome, Gulf of Guinea. 



5, Deemophis ceasstjs. 



Dennojjhis crassm, Cope, Proc. Am. Philos. Soc. xxii. 1885, 

 p. 184. 



Bolivia ; Eastern Peru. 



The systematic position of the following species, provisionally 

 ref erred to Dermophis by Cope, is very doubtful : — 



Siphonops sijntremus, Cope, Proc. Ac. Philad. 1866, p. 129. 



Tiqjhlonectes'^ syntremus, Peters, Mon. Berl. Ac. 1879, p. 941. 



Dermophis syntremus, Cope, Proc. Am. Philos. Soc. xxii. 1885, 

 p. 171. 



Belize. 



3. Htpogeophis. 



Ccedlia, part., Dum. & Bibr. viii. p. 274(1841); A. Dum. Mem. 

 Soc. Cherb. ix. 1863, p. 311. 



Hypogeophis, Peters, Mon. Berl. Ac. 1879, p. 936 ; Bouleng. 

 Cat. p. 96 (1882). 



Synopsis of the Species. 



Tentacle much nearer the nostril than the eye ; 100 folds 1. guentheri. 



Tentacle much nearer the nostril than the eye ; 105-130 folds. . . 2. rostratus. 

 Tentacle not or but little nearer the nostril than the eye; 



175 folds 3. altemam. 



*1. Htpogeophis GUEifTHEEi. 



Hypogeophis guentheri, Bouleng. Cat. p. 96, pi. vii. fig. 1 (1882), 



Zanzibar. 



