922 DR. A. G. BUTLER OK BTTTTERFLIKS [Dec. 4, 



over and round the bushes and so difficult to take : finally I have 

 got the better of them by going after them in the afternoon, when 

 they are tired with their day's play and so inclined to rest." (B. C.) 

 One perfect example was chased for ten minutes before it 

 could be captured. 



34. Btblia ilithyia. 



Papilio ilithyia, Drury, 111. Exot. Ent. ii. pi. xvii. figs. 1, 2 

 (1773). 



2 , Roromo, Kikuyu forest, Jan. 12 ; S , Ruarka River, 

 April 25, 1900. 



Of the female Mr. Crawshay writes : — " An insect unknown 

 to me, I think"; and of the male: — "A new arrival on the scene; 

 until the last day or two 1 have not come across one." 



35. Btblia goetzius. 



$. Papilio goetzius, Herbst, Natursvst. Schmett. ix. p. 193, 

 pi. 258. figs. 3, 4 (1798). 



6 , Ruarka River, April 25, 1900. 



1 quite agree with Prof. Aurivillius that B. vulgaris is only a 

 variety of this species and B. ackdoia the dry form ; but I regard 

 B. castanea, boydi, and anvatara as representative species : I am 

 quite sure that the last two are so, whatever B. castanea may prove 

 to be. 



36. ACR.EA ALICIA. 



Acrcea alicia, E. M. Sharpe, Ann. N. H. (6) v. p. 442 (1890). 



$ , Nairobi forest, March 18; <$ 3 , Ruarka River, 5500 feet, 

 April 15, 1900. 



Of the female Mr. Crawshay says : — " The only one of its kind 

 I have seen here. This insect does not succumb to 90 per cent, 

 cyanide in an hour — cyanide which suffocates every other Lepi- 

 dopteron in 25 to 30 seconds." Of the male he writes : — " Simply 

 in swarms on the mud on the rocks in the bed of the stream ; 

 dies very hard in the cyanide-bottle." 



We have so few examples of this pretty species that I much 

 regret the fact that only the female noted above, two good males, 

 and one which lost its antennae on the journey, were sent home. 



37. AC'R.EA E>*CEDO>~. 



Papilio encedon, Linnaeus, Syst. Nat. ed. 10, i. p. 488 (1768). 



5 , var. hjcia, Fabr., Nairobi plains, 5400 eet, May 4, 1900. 



" Unfortunately, with my fiugers shaky after a night's fever, I 

 have destroyed one of the antenna when pinching this specimen — 

 all the more regrettable as I do not know this Acrcea unless it be 

 a variety of some known species."' (B. C.) 



Var. daira, Godm., S 6 ,2 • Nairobi plains, March 28, May 4, 

 1900. 



" Plentiful on the grass-laud round my tent these days, newly 



