4 ARKIV FÖR ZOOLOGI. BAND 7. NIO 8. 



than the f rontal; five lower labials in contact with the anterior 

 chin shields. Ventrals 171 — 178; subcaudals 62 — 63. 



Nyassa, Zansibar, to Natal. 



M. (S.) stenoplithalmus (Moquard). 



Eye scarcely larger than the nostril; a single postocular; 

 ventrals 206—214. etc. 



Coast of Guinea. 



M. (S.) cliauleri Stejneger. 



Internasals two thirds the length of the praef rontals; three 

 postoculars; five lower labials in contact with the anterior 

 chin shields. 



Island Manda, N. of Lamu, Brit. E. Africa. 



M. (S.) crossi Blgr. 



Internasals two thirds the length of the prsef rontals; frön tal 

 as long as its distance from the end of the snout; temporals 

 2+3; scales in 17 rows. 



Niger. 



M. (S.) pliyllopholis Werner. 



Internasals two thirds the length of the praef ron tals; f rontal 

 more than twice as broad as the supraocular; no loreal; five lower 

 labials in contact with the anterior chin shields; scales of the 

 nape very small; keels of scales branched; body slender 



Cameroons. 



M. (S.) butleri Blgr. 



Prsef rontals nearly as long as the trontal; f rontal as long 

 as its distance from the end of the snout; three postoculars; 

 five lower labials in contact with the anterior chin shield. 



Bahr-el-Ghazal. 



31. (S). baumaiiiii Sternfeld. 



Three postoculars; three labials entering the e3'e; five lower 

 labials in contact with the anterior chin shields; scales feebly 

 keeled; subcaudals 65. 



Togo. 



