284 MR. G. A. BOULENGER ON THE 



1. Rhamnophis ^thiops Giinth. 1. c. pi. x. ; Bouleng. 1. c. 

 Thraso'ps splendens Anderss. Bih. Sv. Ak. Handl. xxvii. iv. 



no. 5, 1901, p. 11. 



Sierra Leone to Congo, eastwards to the Itni'i. 



2. Rhamnophis jacksonii. 



Thraso2)s jacksonii Giinth. Ann. & Mag. N. H. (6) xv. 1895 

 p. 528. 



Bhamno2)his jacksonii Bouleng. 1. c. 



French Guinea, Gold Coast, eastwards to Ugandn and' 

 L. Tanganyika. 



18. Ooeonella. 



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



Two species : — - 



Scales in 21 rows ; rostral much broader than deep C. semiornata^ 



Scales in 19 rows ; rostral a little broader than deep C. coronata. 



1. OoRONELLA SEMiORNATA Peters, Mon . Berl. Ac. 1854, p. 622 ; 

 Bouleng. t. c. p. 195. 



Zamenis tcJiadensis Chaban. Bull. Mus. Paris, 1917, p. 451,. 

 fig-- 



Soudan, East Africa, IN". Rhodesia. 



2. CORONELLA CORONATA. 



Calamaria coronata Schleg. Phys. Serp. ii. p. 46. 

 Coronella coronata Bouleng. t. c. p. 196. 

 Senegal to Gold Coast. 



19. Grayia. 



Giinth. Cat. Col. Sn. p. 50 ; Bouleng. Cat. Sn. ii. p. 188. 



Syu^O'jisis 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 (rarel.y 8) ; subcaudals 89-102 G. swi/fhif'.. 



Lower anterior temporal not longer than its distance from the loreal ; 



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



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



E^-e much shorter than snout ; subcaudals 100-128 G. thoUoni.. 



B3'e as long as snout ; subcaudals 125-161 G. casar. 



1. Grayia smythii. 



Coluber smijthii Leach, in Tuckey's Explor. R. Zaire, App.. 

 p. 409. 



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



Gold Coasb to Angola, eastwards to Uganda and L. Tanganyika. 



2. Grayia ornata. 



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



