SNAKES OF EAST AFRICA. 631 



2. PSAMMOPHIS SUBT^NIATUS. 



Psammophis sibilans, var. suhtceniata Peters, Reise Mossamb. 

 iii. p. 121. 



Psammojihis subtceniatus Bouleng. t. c. p. 160. 



East Africa, from Uganda to Mozambique ; Nyassaland. 



3. Psammophis sibilans. 



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

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



Psammophis trinasalis Werner, Abh. Bayer. Ak. xxii. 1903, 

 p. 381. 



Tropical and South Africa ; Egypt. 



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

 1881, p. 88 ; Bouleng. t. c. p. 168. 



Somaliland and British East Africa. 



5. Psammophis angolensis. 



Amphiopihis angolevsis Bocage, Jorn. Sc. Lisb. iv. 1872, p. 82. 



Psammophis atigolensis Bouleng. t. c. p. 170. 



East and Central Africa, Angola, Orange River Colony. 



13. Thelotornis. 



A. Smith, 111. Zool. S. Afr., Kept. ; Bouleng. Cat. Sn. iii. 

 p. 184. 



1. Thelotornis kirtlandii. 



Leptophis kirtlandii Hallow. Proc. Ac. Philad. 1844, p. 62. 

 Thelotornis kirtlandii Bouleng. t. c. p. 185. 

 Tropical and South Africa. 



14. DiSPHOLIDUS. 



Duvernoy, Ann. Sc. ISTat. xxvi. 1832, p. 150 ; Bouleng. Cat. 

 Sn. iii. p. 186. 



1. DiSPHOLIDUS TYPUS. 



Bucephalus typus A. Smith, Zool. Journ. iv. 1829, p. 441. 

 Dispholidus typits Bouleng. t. c. p. 187. 

 Tropical and Sovith Africa. 



15. Calamelaps. 



Giinth. Ann. & Mag. N. H. (3) xviii. 1866, p. 26; Bouleng. 

 Cat. Sn. iii. p, 245. 



Two species : — 



Scales in 17 rows C. unicolor. 



Scales in 19 or 21 rows , C.polylepis. 



