6. POLYODONTOPHIS. 183 



2. Polyodontophis torquatus. 



Enicognathus rhodogaster, part., Bum. ^ Bibr. vii. p. 882 (1854) ; 

 Jan, Arch. Zool. Anat. Phys. ii. 1868, p. 273, and Icon. 04n. 16, 

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



Coronella torquata, Bouleng. Ann. §• Mag. N. S. (6) i. 1888, p. 103, 

 pL V. fig. 8. 



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 much longer 

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

 than the parietals. Ventrals 144-200 ; subcaudals 65-95. Erown 

 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 ; beUy 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. $ (V. 181 ; 0. 66). Near Tamantave. Rev. W. Deans Oowan [0.1. 



b. S (V. 172 ; 0. 74). Ankafana, Bet- Eev. W. Deans Oowan [0.]. 



sileo. 

 c-d. c? (V. 167 ; 0. 79) Antongil Bay. L. H. Kansome, Esq. [P.]. 



&yg.(V. 181; 0.72). 

 e. S (V. 144; 0. 71). Imerina. Rev. R. Baron [0.]. 



/. Hgr. (V. 186 ; 0. 67). Madagascar. Rev. R. Baron [0.]. (Type.) 



g. (J (V. 170 ; 0. 78). Madagascar. 



3. Polyodontophis mayottensis. 



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

 Berl. Ac. 1873, p. 793. 



Closely allied to the preceding, but 19 rows of scales, 199 ven- 

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

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



Mayotta, Comoro Islands. 



4. Polyodontophis sumichrasti. '^ ' 1 



Henicognathua wmichrasti, Bocawrt, Miss. 8c. Mex., Rept. p. 628, 



pi. xli, %. 6 (1886). 

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

 Polyodontophis sumichrasti, Bouleng. Faun. Ind., Rept. p. 302 



(1890). 



Eostral broader than deep, just visible from above ; suture 

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

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

 a little shorter than the parietals ; loreal square ; one praeocular ; 

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



