200 Dr. A. G. Butler on Butterflies 
36, Acrwa serena, Fabr. 
3, Embi, 15th February, 1900. 
37. Acrwa lycia, Fabr. 
3 (typical form), Munisu in February. 
? (var, daira), Athi River. 
38. Acrwa cecilia, var., Fabr. 
This form might be taken for A. onerata, excepting that 
the internervular folds are not blackened. I am afraid that 
eventually connecting-links will be discovered. The width of 
the border certainly varies considerably in this as in many 
species. 
39. Acrwa natalica, Boisd. 
Lycenide. 
40. Uranothauma nubifer, Trimen. 
It is rather surprising to find this southern species so far 
to the north; one would rather have expected to meet with 
U. cordatus. 
41. Polyommatus beticus, Liun. 
3 3, Munisu and Embi, 15th February, 1900. 
42. Syntarucus telicanus, Lang. 
og 6 $, Munisu; ?, Athi River. 
43. Azanus ubaldus, Cramer. 
6 6, Athi River (all much worn). 
Papilionide. 
44, Mylothris rubricosta, Mab. 
45. Colias electra, var. edusa, Fabr. 
A pair taken at Embi on the 15th February. 
46. Terias brigitta, Cramer. 
3h, Munisu; ? ?, Embi, 15th February, and Meara, 
19th February. 
The specimens are of the wet phase. 
