770 MR. A. G. BUTLER ON [NoV. 3, 



Idmais and CaUosune were formerly given. T. amina has much of 

 the pattern of T. vesta and its allies on the under surface, but both 

 sexes correspond more nearly with the T. ione group on the upper 

 surface ; T. pholoe, from Lake N'Gami, is evidently a female allied 

 to T. amina, but having two series of magenta spots across the black 

 area of the primaries ; it may even be a dimorphic form of the female 

 of T. celimene from Abyssinia, which is described as having two 

 series of yellowish-white spots across this area : all these have the 

 " Idmais " type of marking on the under surface. On the other hand, 

 the species from Somali, though on the upper surface much hke 

 T. amina and (evidently) T. pholoe, differs in having the under sur- 

 face coloured more nearly as in T. zoe of Madagascar, a species 

 intermediate in character between the T. halimede and T. ione groups, 

 and thus links the so-called genera Idmais and CaUosune at another 

 point, proving that even in their pattern they are completely linked 

 and interlocked beyond the possibility of separation. 



36. Teracoltjs eupompe. 



Pontia eupompe. King, Symb. Phys. pi. 6. figs. 11-14. (1829). 



Two male specimens. — Tkrupp. 



The males are chiefly distinguishable from the following by the 

 magenta-shot colour u))on the crimson aj)ical patch, the usually much 

 broader blackish inner border to this patch, and the more distinct 

 markings on the under surface. 



37. Teracolus dedecorus. 



Anthopstjche dedecora, Felder, Reise der Nov., Lep. ii. p. 184, 

 n, 177 (1865). 



cJ . Duderi, 26th April ; Bunder Maria, 27th April. — Terbury. 



^ $ . Somali, 23rd December. — Thrupp. 



Some examples have no series of discal spots across the secondaries 

 on the under surface, whereas others are nearly as strongly marked 

 as in T. eupompe. This appears to be an inconstant character in the 

 present species, as one out of three males from Duderi has these 

 markings obliterated, a second has them half across the wing, and 

 the third has a complete series and much resembles males of T. 

 dulcis ; the tint of the under surface also varies as in T. suhroseus. 



38. Teracolus complexivus, sp. n. 



S . Upper surface almost exactly as in the male of T. ompTialoides, 

 differing in the orange instead of vermilion apical patch, and in the 

 diffuse character of the posterior extremity of the black border. On 

 the under surface it corresponds more nearly with the male of T. 

 theogone, the apical area of primaries being precisely similar except- 

 ing that perhaps the red patch is a little more diffused ; the secon- 

 daries are however decidedly paler, of a clear pink colour with a 

 broad grey costal border extending from the base to the brown costal 

 spot ; the discal brown stripe is well defined but the spot at the end 

 of the cell extremely minute. Expanse of wings 45 millim. 



One male. January 2nd. — Thrupp. 



