6. rOLTODONTOPTIIS. 183 



2. Polyodontophis torquatus. 



Enicognathus rhodogaster, part., Dum. 8f Bihr. vii. p. 332 (1864) ; 

 /«n, Arch. Zool. Anat. Phys. ii. 1863, p. 273, and Icon. Ghi. 16, 

 pi. iii. fig. 1 (1866); BoetUj. Abh. Scnck. Ges. xi. 1877, p. 8. 



Coronella torquata, Boulemj.'^ Ann. ^' May. N. H. (6) i. 1888, p. 103, 

 pi. V. fig. 3. 



Apart from a different coloration this species may be distinguished 

 from the preceding in its more elongate head ; the loreal is as long 

 as deep or longer than deep ; and the frontal, which is mnch longer 

 than its distance from the end of the snout, is but slightly shorter 

 than the pariotals. Ventrals 144-200 ; subcaudals 65-05. Brown 

 above, uniform or with small black spots arranged in longitudinal 

 series ; sometimes a dark line along the middle series of scales ; a 

 more or less distinct dark cross band behind the parietals ; a 

 whitish, black-edged streak along the upper lip : throat brown, with 

 white, dark-edged markings ; belly and lower surface of tail 

 yellowish or pink, with more or less numerous brown or black dots. 



Total length 610 millim. ; tail 170. 



Madagascar. 



a. 2 (V. 181 ; C. 65). Near Tamantave. Rev. W. Deans Cowan [C.J. 



b. S (V. 172 ; C. 74). Ankafana, Bet- Rev. W. Deaus Cowan [C.]. 



sileo. 

 c-d. S (V. 167 ; C. 79) Antougil Bay. L. H. Ransome, Esq. [P.]. 



&yg.(V.181;C.72). 

 e. S (V. 144; C. 71). Imerina. Rev. R. Baron [C.]. 



/. Hgr. (V. 186 ; C. 67). Madagascar. Rev. R. Baron [C.]. (Type.) 



y. S (V. 170 ; C. 78). Madagascar. 



3. Polyodontophis mayottensis. 



Ablabes (Enicognathus) rliodogaster, var. mayottensis, Peters, Mon. 

 Berl. Ac. 1873, p. 793. 



Closely allied to the preceding, but 19 rows of scales, 109 ven- 

 trals, and 99 subcaudals. Coloration similar to P. rliodogaster, but 

 fine yellowish cross-lines on the nape, which bears no dark collar. 



Mavotta, Comoro Islands. 



4. Polyodontophis sumichrasti. 



Henicognathus sumichrasti, Bocourt, Miss. Sc. Mex., Rept. p. 028, 



pi. xli. fig. 5 (1886). 

 Rhadiuica sumichrasti, Cope, Bull. U.S. Nat. Mus. no. 32, 1887, p. 79. 

 Polyodontophis sumichrasti, Boulem/. Faun. Ind., Rept. p. 302 



(1890). 



Rostral broader than deep, just visible from above ; suture 

 between the internasals a little shorter than that between the prsB- 

 frontals ; frontal longer than its distance from the end of the snout, 

 a little shorter than the parietals ; loreal scpiaro ; one pra^ocular ; 

 two postoculars, only the upper in contact with the parietal; 



