172 COLUBEID^. 



<«-e. S (V. 149, 140; Imerina. Rev. J. Wills [C.]. 



C. 63, 66). 

 /. Yg. (V. ]46; 0. 71). Imerina. Rev. R. Baron [0.]. 



B. Dorsal stripe with dentated borders or replaced by spots, and 

 with a more or less distinct light median line ; sides and belly 

 spotted or irregularly lineolated. 



a. S (V. 156; 0. 80). Betsileo. Rev. G. Shaw [C.]. 



b. Hgr. (V. 161 ; C. 80). S.W. Madagascar. Mr. Last [C.]. 

 ■c-^- 6 (V. 154 ; 0. 87) Madagascar. 



& ? (V. 150, 152, 159, 



154; C. 81, 81, ?, 83). 



h. Yg. (V. 164 ; C. 102). ? Zoological Society. 



i. Skull of a. 



173. PSAMMODYNASTBS. 



Psammophis, part., Boie, Isis, 1827, p. 621 ; Schleq. Phys. Serp. ii. 



p. 201 (1887) ; Bum. df Bibr. Erp. 04n. vii. p. 887 (1854) ; Peters, 



Mon. Berl. Ac. 1868, p. 452. 

 Psammodynastes, Gilnth. Cat. Col. Sn. p. 140 (1858) ; Jan, Elenco 



sist. Ofid. p. 90 (1863) ; Ounth,. Bept. Brit. Ind. p. 292 (1864) ; 



Mocquard, Bull. Soc. Philom. (7) xi. 1887, p. 172 ; Bovleng. Faun. 



Ind., Rept. p. 363 (1890). 



MaxiUary teeth 9 to 11, third or third and fourth much enlarged, 

 fang-like, followed by a short interspace, last enlarged and grooved 

 anterior mandibular teeth strongly enlarged. Head distinct from 

 neck, with angular canthus rostralis : eye rather large, with verti- 

 cally elliptic or subeUiptic pupil ; nostril in a single nasal ; frontal 

 very narrow. Body cylindrical ; scales smooth, without pits, in 17 

 or 19 rows ; ventrals rounded. Tail moderate or rather short ; 

 fiubcaudals in two rows. 



South-eastern Asia. 



1. Psammodynastes pulverulentus. 



Psammophis pulverulenta, Boie, Isis, 1827, p. 547 ; Schleg. Phys. 



Serp. ii. p. 211, pi. viii. figs. 10 & 11 (1837), and Abbild. pi. xliii. 



figs. 1-4 (1844) ; Bum. %■ Bibr. vii. p. 895 (1854). 

 Dipsas ferruginea. Cantor, Proc. Zool. Soc. 1839, p. 53 ; Blyth, Joum. 



As. Soc. Beng. xxiii. 1854, p. 293, and xxiv. 1856, p. 715. 

 Psammodynastes pulverulentus, part., Oiinth. Cat. p. 140 (1858). 

 pulverulentus, Ounth. I. c. p. 251, Rept. Brit. Ind. p. 292 



(1864), and Zool Ree. 1867, p. 188 ; Theob. Cat. Rept. Brit. Ind. 



p. 188 (1876) ; Fischer, Arch. f. Nat. 1885, p. 62 ; Mocquard, 



Bull Soc. Philom. (7) xi. 1887, p. 172, pi. iii., and xii. 1888, p. 104; 



Bouleng. Faun. Ind., Rept. p. 363 (1890). 

 Lycodon bairdi, Steind. Novara, Rept. p. 90 (1867). 



Snout short, profile truncate or somewhat turned up in the 

 adult. Eostral broader than deep, scarcely visible from above; 

 internasals much shorter than the praefrontals ; frontal twice to 



