SNAKES OF NORTH-EAST AFRICA. " 653 



2. Rhamphiophis OXYRHYNCHUS. 



Psammophis oxyrhynchus Reinh. Vicl. Selsk. Skiift. x. 1843, 

 p. 244, pi. i. figs. iO-'l2. 



Rhamphiophis oxyrhynchus Bonleng. I.e. 



Tropical Africa. 



9. Dromophis. 



Peters, Men. Berl. Ac. 1869, p. 447; Bouleng. Cat. Sn. iii. 

 p. 149. 



1. Dromophis lineatus. 



Dryophylax lineatus Dnm. & Bibr. Erp. Gen. vii. p. 1124. 



Dromophis lineatus Bouleng. 1. c. 



Coast of Guinea to Eastern Soudan, Centi-al Afn"c:i. 



10. Psammophis. 

 Poie, Isis, 1827, p. 521 ; Bouleng. Cat. Sn. iii. p. 152. 



Synopsis of the Species. 



I. Scales in 17 rows, rarely 19. 

 Rostral a little broader than deep ; 9 (rarely 8 or 10) upper labials, 



sixth short'^r than eye ; subcaudals 93-154 P. schnl-ari. 



Rostral a little b'-oader than deep ; 9 (rarely 8) upper labials, sixth 



(or fifth) as lon.^ as eye ; subcaudals 130-178 P. punctidatits. 



Rostral as deep as broad ; 8 (rarely 9) upper labials; subcaudals 



85-116 P- sibilans. 



ir. Scales in 15 rows P. biseriatns. 



III. Scales in 13 rows P. pvJcJier. 



1. Psammophis schokari. 



Coluber schokari Forsk. Descr. Anim. p. 14. 

 Psammophis schokari Bouleng. t. c. p. 157. 



North Africa to Mauritania arid Somaliland ; Arabia and Syria 

 to Afghanistan and Sind. 



2. Psammophis punctulatus Dura. &. Bibr. Erp. Gen. vii. 

 p. 897; Bouleng. t. c. p. 159. 



East Africa, from the Blue Nile to Mozambique ; Arabia. 



3. Psammophis sibilans. 



Coluber sibilans Linn. S. N. i. p. 383. 

 Psammophis sibilans Bouleng. t. c. p. 161. 

 Tr-opical and South Africa, Egypt. 



4. Psammophis biseriatus Peters, Sitzb. Ges. Nat. Fr. Berl. 

 'l881, p. 88; Bouleng. t. c. p. 168. 



Somaliland and British East Africa. 

 Proc. Zool. Soc— 1915, No. XLV. 45 



