4 ARKIV FÖR ZOOLOGI. BAND 8. N.O 20. 



species of one and the same species, but for the present we 

 are not able to express any definite opinion about which 

 ought to be regarded as the main species. The differences 

 recorded above have within this genus repeatedly been used 

 as specific characteristics, and as we could not neglect these 

 we had no other way out of the difficulties than to name 

 this snake from Kismayu. 



Philothamnus semivariegatus Smith. 



1 specimen. 



Chlorophis neglectus Peters. 



2 specimens. This locality appears to be the most north- 

 eastern for this species. 



Dasypeltis scabra Lin. 



1 specimen. 



Tarbophis guentheri Anderson. 



3 specimens. 



Leptodira hotamboeia Laur. 



2 specimens. 



Hemirhagerrhis kelleri Bttgr. 



2 specimens. 



Psammophis sibilaus Lin. 



2 specimens. 



Psammophis biseriatus Peters. 



1 specimen. 



Thelotornis kirtlandi Hallow. 



2 specimens. It appears rather stränge to find this tree- 

 snake within the boundaries of the Somali-fauna. Probably 

 it inhabits the trees fringing Juba river. 



