— 205 — 



The colour varies considerabl y : the dark colour without any 

 distinct temporal band, mentioned by Werner as cliaracteristic for 

 L. attarensis, was found both in the specimen from Harrar and in 

 several specimens from the Congo and the (xerman East-Africa. Besides, 

 tlie Nilespecimen is not darker than most exami)les from these countries. 

 All the specimens from the Cape are in spirit ligth sandy coloured, 

 and, with the exception of a Single specimen, are provided with a. 

 very distinct dark temporal band. If [ should establish varieties 

 of tlüs snake. I should therefore at tirst distinguish a ligth Cape-race 

 with distinct temi)oral band and only 3 pairs of chinshields, but I can 

 not find a north L. attarensis with the ditt'erences which Werner 

 mentions. It also will most certainly l)e shown that the ligth sandy 

 colour. which is to be seen among my specimens only in the specimens 

 from the Cape, may l)e found also in examples from the other regions 

 of the distribution of the species, and I tliink that the diiferences are 

 individual, and also are due to the differences of the environs, and that 

 they have not yet formed any geographical races, limited to contined 

 regions. 



ßana delalaudii Gthr. 



BOULENGER, C R t. B a t T. Sal. p. 31. 



Two specimens, 



Biifo regularis Reuss. 



BouLENGER, Cat. Batr. Sal. p. 298. 

 Four specimens. 



Gedruckt am 31. Oktober 1910. 



