7. DROMICODRTAS. 189 



10. Polyodontophis annulatus. 



Enicognathus annulatus, Dum. ^ Bibr. vii. p. 335, pi. Ixxx. fig. 1 



(1854) ; Jan, Arch. Zool. Anat. Phys. ii. 18G3, p. 278, and Icon. 



Gm. 16, pl. iv. fig. 3 (18G6); Giinlh. Ann. Sf Mat/. N. II. (4) i. 



1868, p. 418; F. Miill. Verh. nat. Ges. Basel, vi. 1878, p. 659; 



Sumichrasl , Bull. Soc. Zool. France, 1880, p. 181. 

 Henicognathus .annulatus. Cope, Journ. Ac. Philad. (2) viii. 1876, 



p. 138 ; Boconrt, Miss. Sc. Me.r., liept. p. 626, pl. xl. fig. 6 (1886). 

 Diatlophis annulatus, Garm. N. Am. Rept. p. 70 (1883). 

 Polyodontopliis annulatus, Boideng. Faun. Ind., Rept. p. 302 (1890). 



Snout much flattened, truncated ; rostral broader than deep, well 

 visible from above ; internasals much shorter than the prajfrontals ; 

 frontal longer than its distance from the end of the snout, a little 

 shorter than the parietals ; lorcal as long as deep or deeper than 

 long ; one prajocular ; two postoculars, both in contact with the 

 parietal; temporals 1+2 (or 2 + 3); nine (exceptionally eight) 

 upper labials, fourth, fifth, and sixth (or fourth and fifth) entering 

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

 which are a little longer than the posterior. Scales in 17 rows. 

 Ventrals 137-157; anal divided ; subcaudals 116-136. Anterior 

 half of body red, with pairs of black bars enclosing a yellow or 

 lavender-grey zone ; hinder half of body and tail grey or grey- 

 brown, with three longitudinal series of small black spots, which may 

 form stripes posteriorly : snout brown, back of the head black : a 

 yellow bar across the interorbital region ; belly white, grey, dotted 

 with black, on the sides. 



Total length 010 millim. 



Mexico and GuatemaUa. 



a. S (V. 137; C. ?). " City of Mexico. Mr. Doorman [C.]. 



h. S (V. 157 ; C. ?). Vera Paz, low forest. O. Salvin, Esq. [0.]. 



7. DROMICODRYAS. 



Psammophis, part., Schleg. Phys. Serp. ii. p. 201 (1837). 

 Herpetodryas, part., Dum. ^ Bibr. Erp. Gen. vii. p. 203 (1854) ; 

 Jan, Elenco sist. Ofid. p. 80 (1863). 



Maxillary teeth 28 to 30, equal ; anterior mandibular teeth 

 strongly enlarged. Head elongate, distinct from neck ; eye large, 

 with round pupil. Body cylindrical ; scales smooth, without pits, in 

 19 rows ; ventrals feebly augulate laterally. Tail long ; subcaudals 

 in two rows. Hypapophyses developed throughout the vertebral 

 column. 



Madagascar. 



1. Droinicodryas bernieri, 



Psammophis moliniger, var., Schleg. Phys. Serp. ii. p. 211 (1837). 

 Herpetodryas beruierii, Dum. S,- Bibr. vii. p. 21 1, pl. Ixvi. (1854) ; 



Jan, Icon. Gen. 31, pl. iv. fig. 1 (1869). 

 bernieri, var. trilineata, part., Boettg. Abh. Senck, Ges. xii. 



1881, p. 443. 



