552 Mr. Guy A. K. Marshall's 



It will be advisable to discuss each of these pairs 

 separately in order to properly test the truth or otherwise 

 of the contention that they are merely seasonal forms of 

 one species. 



(1.) A. anacreou, Trim. == ^1. hoynha, H. G. Smith. 

 Bomha is quite unknown to me, and at the present time 

 I am unable to obtain access to the description of the 

 type, but I note that Mr. Butler considers it to be identical 

 with induna, Trim., described from specimens captured 

 by myself in Mashunaland. Assuming this provisionally 

 to be the case, I think I can cleai'ly show that homha 

 (= induna) is very far from being a seasonal form of 

 A. a?? acreo??., Trim. 1 have taken i?u/»7m fairly commonly 

 in Salisbury (5,000 ft ) during every month in the year, 

 except the three driest and coldest, viz., May, June, and 

 July; it is, however, most abundant during the height 

 of the rains, from the middle of December to the middle 

 of March. In the Gadzima district on the middle Umfuli 

 Eiver (4,200 ft.) it is not very common. On the sources 

 of the Mazoe Kiver (4,000 fr.), about 20 miles north of 

 Salisbury, it was distinctly scarce, and its eastern range 

 seems to extend only to Umtali (3,700 ft.). Throughout 

 the whole of this area where I have been collecting care- 

 fully for the last three years, I have never seen or heard of a 

 single specimen of anacreon. Moreover it is noteworthy 

 that induna itself exhibits seasonal variation. The 

 6 and ? figured by Trimen (Ti-ans. Ent. Soc. 1895, pi, v., 

 figs. 3, oa) are wet season forms, though not very 

 strongly marked ones. [N.B. The figure of the S does 

 not properly show the markedly paler tint of the ground- 

 colour of the forewings beyond middle, as compared with 

 the basal portion.] 



In the extreme dry season form the S and ? are 

 almost identically coloured, the black basal suffusion in 

 the hindwings being much reduced or even obsolete. 

 The black marginal edgrinof of hindwino-s is also reduced, 

 so that the three yellow spots in it which are nearest the 

 anal angle merge into the ground-colour, and the re- 

 mainder up to the apical angle are clearl}^ defined. 



In the wet season form the c^ has a strong black basal 

 suffusion in the hindwings, and the hindmargin is better 

 developed, the contained yellow spots being much 

 reduced, and those near apical angles almost always 

 obsolete. The ? also exhibits these differences, but the 



