AFRICAN SNAKES. 213 



B. Frontal, in the middle, not or but little narrower than 



the supraocular ; 7 or 8 upper labials, 2 entering the eye . P. brevirostris. 



II. Scales in 15 rows or less. 



Scales in 15 rows; 7 upper labials P. ansorgii. 



Scales in 11 rows; 8 upper labials P. angolensis. 



1. Psammophis NOTOSTiCTcrs Peters, Mon. Berl. Ac. 18(57, 

 p. 237 ; Bouleng. t. c. p. 156 ; Bocage, Herp. Ang. p. 116. 



Lower Congo, Angola, S. Africa. 



2. Psammophis sibilans. 



Coluber sibilans Linn. S. 1ST. i. p. 383. 



Psammop>his sibilans Bouleng. t. c. p. 161 ; Bocage, Herp. Ang. 

 p. 114 (part.). 



Tropical and South Africa, Egypt. 



3. Psammophis bocagii Bouleng. t. c. p. 161, pi. viii. fig. 1. 

 Psammophis sibilans, yar. A, Bocage, Herp. Ang. p. 115. 

 Katanga, Rhodesia, Angola, Bechuanaland. 



4. Psammophis brevirostris Peters, Sitzb. Ges. Naturf. Fr. 

 Berl. 1881, p. 89 ; Bouleng. t. c. p. 166. 



Angola, South Africa. 



5. Psammophis ansorgii Bouleng. Ann. & Mag. 1ST. H. (7) 

 xvi. 1905, p. 113, pi. iv. fig. 4. 



Angola. 



6. Psammophis angolensis. 



Amphiop>his angolensis Bocage, Jorn. Sc. Lisb. iv. 1872, p. 82, 

 and Herp. Ang. p. 113, pi. xi. tig. 3. 



Psammophis angolensis Bouleng. t. c. p. 170. 



Angola, Katanga, Nyassaland, East Africa, Orange River 

 Colony. 



10. Dispholidus. 



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

 Sn. iii. p. 186. 



""- 1 . Dispholidus typ us. 

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

 Dispholidus typus Bouleng. t. c. p. 187. 

 Bucephalus capensis Bocage, Herp. Ang. p. 121. 

 Tropical and South Africa. 



.11. Thelotornis. 



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

 p. 184. 



1. Thelotornis kirtlandii. 



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



