NOTES ON BUTTERFLIES OF ADEN. 217 



39. Belenois leucogyne, Butler, P. Z. S,, 1884, p. 492, n. 35. 

 At Haithalhim in April, 1883, I found the males common, while tlie 

 females were rare. 



40. Syncliloe glauconomo, Klug, Symb. Phys., pi. vii, figs. 18, 19 

 (1829). Very common. In Aden the caterpillar feeds on Cleome 

 paradoa, while inland it feeds on Dipterygium glaucnm. On one or 

 two occasions I found whole clutches of larvte destroyed by some 

 hymenopterous parasite ; the parasite had formed its cocoon inside the 

 body of the caterpillar, while the caterpillar's withered-up head and 

 tail projected at each end beyond the cocoon. When at home I 

 saw in the collection of Mr. Bignell of Plymouth some larvae of 

 Gonepten/sG rhamiii which had been destroyed in precisely the 

 same manner. The parasites in each case were probably closely 

 allied. 



41. Nepheronia arahica, Hopffer, in Peter's Reise nach Mozam- 

 bique, ZooL, vol. V, p. 363, var. B (1862). Fairly common inland. 

 Mr. Butler told me one day at the British Museum that the neura- 

 tion in all (but one) of the Aden specimens was abnormal : from this 

 and other like cases neuration appears to be as little trustworthy as 

 colour as a means of identification. 



Family — Hesperiid^. 



42. Ismene ancJiises, Gerstaecker, in Von der Decken's Ecise in 

 Ost.'Afrika, vol. iii, p. 374, n. 29, pi. xv, figs. 6, 6a (1873). Not uncom- 

 mon in June and July, 1 883 : only once seen inland. As in the case of 

 T. vi, it was a long time before I got among these " skippers." At 

 last, however, I found their roosting place in GoldMohur Valley on a 

 plant with a yellow flower rather like a monster groundsel : after this 

 I had no difiiculty in getting specimens, sometimes taking seven or 

 eight in an evening. 



43. Parnara matJiias, Fabricius, Ent. Syst., Suppl., p. 433 (1798). 

 Very common. 



44. Gegenes karsana, Moore, P. Z. S., 1874, p. 576, pi. Ixvii, fig. 6. 

 Not uncommon, especially in the lucerne fields at Shaik Othman. 



45. Pyrgus evanidus, var. adenensis, Butler, Ann. and Mag. Nat. 

 Hist., ser. 5, vol. v, p. 223. Common in Aden. Not seen inland. 



46. ThanaosdjcelcBlcE,'WEi\\e-ngren,'Le^. Rhop. Caffr., p. 54 (1857). 

 Aden, a single specimen, 1st July, 1883, 



