182 



COLTTEBIB*. 



a. Parietal not in contact with the lower postocular ; sub- 



caudals 102-lbl. 



Rostral not twice as broad as deep 4. sumichrasti, p. 183. 



EiOstral twice as broad aa deep 5. collaris, p. 184. 



b. Parietal in contact with both postoculars. 



Subcaudals 89-145 6. geminatus, p. 185. 



Subcaudals 47-76 7. suhpunetatus, p. 186. 



2. 7 or 8 npper labials ; subcaudals 



56-70 8. Sagittarius, p. 187. 



B. Portion of rostral visible from above measuring two fifths its 

 distance from the frontal. 



9 or 10 upper labials ; subcaudals 73-75 . 9. bistrigatus, p. 188. 

 8 or 9 upper labials ; subcaudals more than 



100 10. annulattis, p. 189. 



1. Polyodontophis rhodogaster. 



Herpetodryas rhodogaster, Sehleg. Phys. Serp. ii. p. 193 (1837). 

 Enioognathus rhodogaster, part., Bum. 8f Bibr. vii. p. 332, pi. Ixxx. 



fig. 2 (1854) ; Jan, Arch. Zool. Anat. Phys. ii. 1863, p. 273, and 



Icon. G^n. 18, pi. iii. flg. 2 (1866) ; Boettg. Abh. Senck. Ges. xi. 



1877, p. 8. 

 Polyodontophis rhodogaster, Bouleng. Faun. Ind., Sept. p. 302 



(1890). 



Eostral broader than deep, just visible from above ; suture 

 between the internasals shorter than that between the prsefrontals ; 

 frontal longer than its distance from the end of the snout, con- 

 siderably shorter than the parietals ; loreal deeper than long ; one 

 praeocular ; two postoculars, both in contact with the parietal ; 

 temporals 1 + 2 ; eight upper labials, fourth and fifth entering the 

 eye ; four lower labials in contact with the anterior chin-shields, . 

 which are as long as or a little shorter than the posterior. Scales in 

 17 rows. Yentrals 175-188 ; anal divided ; subcaudals 77-84. 

 Pale brown above, with a darker vertebral stripe, three scales wide, 

 edged on each side by a black line ; a dark brown streak along 

 each side, on the second row of scales ; upper surface of head dark 

 brown, with a yellowish spot on the outer side of the parietal 

 shields; upper lips yellowish white, with a few black dots, and 

 edged with black above ; throat and lower surface of neck yellowish 

 white, dotted with black ; belly and lower surface of tail bright 

 pink in the middle, yellow on the sides ; a series of black dots may 

 be present on each side of the belly. 



Total length 650 miUim. ; tail 170. 



Madagascar. 



a-c. c? (V. 188 ; C. 77), ? Madagascar. 

 (V.]86;C. 7.3), &yg, 

 (V, 170; 0.84). 



