6. POLYODONTOPHIS. 183 
2. Polyodontophis torquatus. 
Enicognathus rhodogaster, part., Dum. § Bibr. vii. p. 332 (1854) ; 
Jan, Arch, Zool. Anat. Phys. ii. 1863, p. 273, and Icon. Gén. 16, 
pl. iii. fig. 1 (1866); Boetty. Abh. Senck. Ges. xi. 1877, p. 8. 
Np — ouleng. Ann. § Mag. N. H. (6) i. 1888, p. 103, 
Pp v. . . 
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. 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. 
adagascar, 
M 
a. 2 (V. 181; C. 65). Near Tamantave. Rev. W. Deans Cowan [C. 
6. 3 (V. 172; C. 74).  Ankafana, Bet- Rev. W. Deans Cowan [C.}. 
sileo, 
e-d. g (V. 167; C.79) Antongil Bay. L. H. Ransome TPS 
& yg. (V. 181; 0.72). sts » Boa: (FJ 
e. d (V. 144; C.71). Imerina. Rey. R. Baron [C.}. 
Ff. Hgr. (V. 186; C. 67). Madagascar: Rey. R. Baron[C.]. (Type.) 
g- 3 (V.170; C.78). Madagascar. 
3. Polyodontophis mayottensis. F 
Ablabes Cialocenetieet) 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 subcandals. Coloration similar to P. rhodogaster, but 
fine yellowish cross-lines on the nape, which bears no dark collar. 
Mayotta, Comoro Islands. t 
4. Polyodontophis sumichrasti. - ‘ 
Henicognathus sumichrasti, Bocourt, Miss. Se. Mex., Rept. p. 628, 
pl xi, fig. 5 (1886). ao 
Rhadinza sumichrasti, Cope, Bull, U.S. Nat. Mus. no, 32, 1887, p. 79. 
cen ragagigs sumichrasti, Bouleng. 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 pre- 
frontals ; frontal longer than its distance from the end of the snout, 
a little shorter than the parietals; loreal square; one preocular ; 
two postoculars, only the upper in contact with the parietal; 
- 
