286 C0LUBRID.5!. 



entering the eye ; both pairs of chin-shields subeqnal in size. 

 Scales in 17 rows. Ventrals 189: anal divided; subcaudals 87. 

 Anterior half of the body reddish brown above, posterior blackish 

 grey; head above blackish, the first three labials witli yellow spots ; 

 a short broad yellow streak from behind and below the eye poste- 

 riorly to the angle of the month ; a black collar, margined on both 

 sides with an interrupted yellow band, of which the anterior is the 

 most distinct ; an indistinct series of blackish-grey dorsal spots, 

 almost forming a dark undulating band ; sides marbled and freckled 

 blackish grey, this colour being separated from the upper brown one 

 by a series of closely-set black spots, which are partially conspicuous 

 on the posterior part of the body ; chin dusky ; lower parts yellow 

 with a vermilion tinge, each ventral with a large black spot near 

 its outer extremity. 



Total length 440 millim. ; tail 110. 



Camorta, Nicobars. 



104. GRAYIA. 



Heteronotus (non Lap.), Hullow. Proc. Ac. Philad. 1857, p. 67. 



Grayia, GUnth. Cat. Col. S?i. p. 50 (1858). 



Glaniolestes, Cope, Proc. Ac. Phiiad. 1862, p. 191. 



Leionotus (wow Bib):), Jan,EIenco sist. OJid. p. 68 (1863), and Arch. 



Zool. Anat. Phys. iii. I860, p. 240. 

 Macrophis, Socage, Jam. Sc. Lisb. i. 1866, p. 67. 



Maxillary teeth equal, 22 to 25 ; mandibular teeth equal. Head 

 distinct from neck ; eye moderate, with round pupil ; nostril directed 

 upwards, in a semidivided nasal shield. Body cylindrical, stout ; 

 scales short and smooth, without apical pits, in 17 or 19 rows; 

 ventrals rounded. Tail rather long ; snbcaudals in two rows. 



Tropical Africa. 



Synopsis of the Species. 



I. Fourth upper labial entering the eye ; two postoculars ; two 



superposed anterior temporals. 

 Seven or eight upper labials; ventrals 145-161. 1. smytliii, p. 286. 

 Nine upper labials ; ventrals 219 2. furcata, p. 287. 



II. Fourth and fifth upper labials entering the eye ; three post- 



oculars ; a single anterior temporal .... 3. giardi, p. 288. 



1. Grayia smythii. (Plate XIII. fig. 3.) 



Coluber smythii. Leach, in Tunkey^s Explor. R. Zaire, Apjj. p. 409 



(1818). 



Iffivis {non Lacep.), Hallow. Proc. Ac. Philad. 1844, p. 118. 



Coronella triangularis, Halloic. Proc. Ac. Philad. 1854, p. 100. 

 Heteronotus triangularis, Hallow. Proc. Ac. Philad. 1867, p. 68. 

 Grayia silurophaga, Giinth. Cat. p. 61 (1868) ; F. Midi. Verh. nat. 



Ges. Basel, vii. 1885, p. 683. 

 Leionotus schlegeli, Jan, Elenco, p. 68 (1863). and Arch. Zool. Anut. 



Phy^m. isfir;, p. 241, 



