7. DROMICOBEYAS. ' 189 



10. FolyodontopMs annulatus. 



Enicognathus annulatus, Hum. ^'Sibr. vii. p. 336, pi. Ixxx. fig. 1 



(1854") ; Jan, Arch. Zool. Anat. Phys. ii. 1863, p. 278, and Icon. 



Gin. 16, pi. lY. fig. 3 (1866) ; Giinth. Ann. 8f Mag. N. H. (4) i. 



1868, p. 418 ; F. Mull. Verh. nat. Oes. Basel, vi. 1878, p. 659 ; 



Sumichrasi, Bull. Soo. Zool. France, 1880, p. 181. 

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



p. 138 ; Bocourt, Miss. 8c. Mex., Bept. p. 626, pi. xl. fig. 6 (1886). 

 Diadophis annulatus, Garm. N. Am. Bept. p. 70 (1883). 

 Polyodontophis annulatus, Bouleng. Faun. Ind., Bept. p. 302 (1890). 



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

 visible from above ; internasals much shorter than the praefrontals ; 

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

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

 long; one praeocular; 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 610 millim. 



Mexico and Guatemalla. 



a. S (V. 137; C. ?). City of Mexico. Mr. Doorman [0.1. 



6. S (V. 167 ; C. ?). Vera Paz, low forest. 0. Salvin, Esq. [0.]. 



7. DEOmiCODRYAS. 



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

 Herpetodryas, part., JDum. Sr Bibr. Erp. GSn. vii. p. 203 (1854) ; 

 Jan, Flenco 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 angulate laterally. Tail long ; subcaudals 

 in two rows. Hypapophyses developed throughout the vertebral 

 column. 



Madagascar. 



1. Dromicodryas bernieri. 



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

 Herpetodryas bemierii, Bum. Sr Bibr. vii. p. 211, pi. Ixvi. (1854); 



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

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



1881, p. 443. 



