334 



On the Snakes of Tropical Africa. 



An analysis of this list shows that out of fortj-six species 

 known from these central parts eleven are generally spread 

 over Tropical Africa, viz. Typhlojis Schlegelii, Goronella oli- 

 vacea^ Psammophis sibilans, Dasiji:>eltis scabra, Bucephalus 

 capensis, Leptodira rufescens, Leptodira semiannulata, Boodon 

 lineatus, Python sebce, Naja nigricoUis, and Clotho arietans. 



Of the remaining thirty-five species only eleven have not 

 been found in ihe littoral areas of either West or East Africa, 



