1897.] BUTTEHFLlES OF THE GENUS TERACOLtJS. 21 



apical patch, which is generally present in that species, but is 

 very variable in size and sometimes absent. T. tone. Trim, (part), 

 and T.jalone var. natahnsis, Stand., represent the Xatal form of 

 the species, which differs from T. imperator in its smaller size, the 

 absence of the 6th spot in apical patch, and the rather stronger 

 development of the inner black edging of the purple ; but specimens 

 from Mashunaland and the Transvaal show every intergrade 

 between the two forms. In the quasi-tropical coast-belt of Natal 

 another variation occurs, in which the purple patch is slightly 

 reduced owing to the broadening of the inner black edging, and 

 the ends of nervules on the underside of hind wings are strongly 

 blackened, often terminating in spots on the hind margin. 

 T. buxtoni is the normal dry-season form of the species in South 

 Africa, the Central- African specimens being noticeably larger. 

 Although the males of this species are so variable, the females are 

 even worse and the variations are not so localized. Not only 

 does the ground-colour vary from white to bright yellow, but even 

 the discal black markings are apt to be very much reduced, and 

 the apical patch may be either red or black ; iu the latter case 

 it contains a row of small spots, which may be either white, j'ellow, 

 or red. The tints of the underside also vary much, and there 

 seems to be a sporadic tendency to blackening of nervules. 



T.phlegyas ranges thoughout Bast Africa from Natal to Abyssinia, 

 and in the Southern Tropic it extends westwards to Damaraland 

 and Ovampoland. 



39. Teeacoltjs eegina, 



Anthoclua-is regina, Trimen, Traus. Ent. Soc. p. 520 (1863). 



Callosune anax, H. G. Smith, Ann. Mag. N. H. (6) iii. p. 125 

 (1889). 



Teracolus eliza, Shar])e, Ann. Mag. N. H. (6) v. p. 411 (1890). 



This handsome species, which is wonderfully constant, has not 

 quite such a wide range as T. jMegi/as. On the eastern side its 

 southern limit seems to be about 28° S. lat., and it has not been 

 recorded north of Victoria Nyanza ; from the Transvaal it ranges 

 west through Bechuanaland to Damaraland. The species was 

 founded on dry-season specimens ; T. anax, with which T. eliza is 

 identical, being the wet-season form. 



40. Tebacolus ducissa. 



Ptycliopteryx ? ducissa, Dognin, Le Natural, p. 132 (1891), 

 Founded on a single specimen from Zanguebar, apparently the 

 only one recorded. Judging by the description, this must be a very 

 distinct species : — " Breadth 55 mm. TJpperside white ; apical 

 third of fore wings orange-red, bordered exteriorly with brick- 

 brown, the latter coloui' extending to inner angle. Underside of 

 hind wings yellowish with reddish striolas and traversed on disc 

 by a straight, well-defined, reddish-yellow ray." The extension 

 of the hiiid-marginal border in fore wing is noticeable. The 



