1909.] 



OPHIDIAN GENUS GRAYIA. 



945 



Grayia oruata Bocage, Herp. Angola, p. 104 (1895) ; Mocquard, 

 Bull. Soc. Philom. (8) ix. 1897, p. 8. 



Grayia smythil (non Leach) Sternfelcl, Mitth. Zool. Mus. Beii. 

 iv. 1908, p. 409. 



Eye moderate in the adult, shorter than its distance from the 

 nostril, as long as its distance from the oral boi'der, larger in the 

 young. 22 to 27 maxillary teeth on each side. Rostral once and 

 a half to once and two-thirds as broad as deep, just visible from 

 above ; nasal divided or semidivided ; internasals as long as broad 

 or a little longer, as long as or a little shorter than the praj- 

 frontals ; frontal once and a half to twice as long as broad, as long 

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

 as long as or slightly shorter than the parietals ; loreal once and 



Text-fifi-. 295. 



Head of Grayta ornata. 



one-third to twice as long as deep * ; one pnB- and two post- 

 oculars ; temporals 2 + 3, lower anterior not longer than its 

 distance from the loreal ; eight upper labials, fourth entering the 

 eye (rarely nine, third and fourth entering the eye t), the last 

 about as long as the two preceding combined ; one or several of the 

 labials behind the eye usually divided into two, a- small triangular 

 shield being often intercalated between the fifth and sixth labials % ; 

 four or five lower labials in contact with the anterior chin-shields, 

 which are not or but slightly shorter than the posterior. Scales 

 in 17 to 20 rows oirthe body, usually 19, in 6 rows on the greater 



* Absent on the viglit side in spec. 13 (Kasayo, Congo). 



t In one specimen, No. 5 (Assobam, Cameroon) ; the type of G. triangularis is 

 also described as having nine upper labials. 



X No division of the upper labials in a specimen from Bitye (No. 3). 



