african snakes. 207 



17. Rhamnophis. 



Giinth. Ann. & Mag. N.H. (3) ix. 1862, p. 129 : Bouleng. Oat. 

 Sn. iii. p. 632. 



Two species : — 



Scales smooth, in 17 rows ; a pair of large shields behind the 



parietals , E. cethiops. 



Scales more or less distinctly keeled, in 19 rows ; no large shields 



behind the parietals R. jacksonii. 



1. Rhamnophis jsthiops Giinth. 1. c. pi. x. ; Bouleng. 1. c. 

 West Africa, from Sierra Leone to the Congo. 



2. Rhamnophis jacksonii. 



Thrasops jacksonii Giinth. Ann. & Mag. N. H. (6) xv. 1895, 

 p. 528. 



Rhamnophis jacksonii Bouleng. 1. c. 



Tropical Africa (French Guinea, Gold Coast, Uganda, Kasai). 



18. CORONELLA. 



Laur. Syn. Rept. p. 84 ; Bouleng. Cat. Sn. ii. p. 188. 



1. Coronella semiornata Peters, Mon. Berl. Ac. 1856, p. 622 ; 

 Bouleng. t. c. p. 195. 



N. Rhodesia ; East Africa. 



19. Grayia. 



Giinth. Cat. Col. Sn. p. 50 ; Bouleng. Cat. Sn. ii. p. 286. 



Synopsis of the Species. 



I. Scales in 17 or 19 rows ; ventrals 143-168. 

 Lower anterior temporal longer than its distance from the loreal ; 



7 upper labials (rarely 8); subcaudals 89-102 G. smythii. 



Lower anterior temporal not longer than its distance from the 



loreal; 8 or 9 upper labials; subcaudals 71-84 G. ornata. 



II. Scales in 15 rows ; ventrals 125-149. 



Eye much shorter than snout; subcaudals 100-128 G. tholloni. 



Eye as long as snout ; subcaudals 125-161 G. ccesar. 



1. Grayia smythii. 



Cohober smythii Leach, in Tuckey's Explor. R. Zaire, App. 

 p. 409. 



Grayia smythii, part., Bouleng. 1. c. 



Grayia triangularis Bocage, Herp. Ang. p. 102. 



West and Central Africa and Uganda. 



2. Grayia ornata. 



Macrophis omatus Bocage, Jorn. Sc. Lisb. i. 1866, p. 67. 

 Grayia smythii, part., Bouleng. 1. c. 



15* 



