150 Mr. Roland Trimcn's Obscrvatiuns on the 



noticeable difference in tlie width of the hind-marginal 

 band of the forewings, as well as in the dentation of its in- 

 terior edge. A very remarkable specimen, taken by J\lrs. 

 Barber at the mouth of the Kleinemond River, recalls, in 

 the character of the spots Avhich represent the hindwing 

 bands, the ordinary West African $ , but is also signalized 

 by a very narroio black border to the forewings, only 

 slightly denticulated on its inner edge. The other ex- 

 treme form in the southern $ is that described by Mr. 

 Butler vmder the head of " (aa.) Cenea, var.," from Port 

 Natal, in which all the black markings are strongly de- 

 veloped, especially the discal band of the hindwings, which 

 in some examples is quitcj unbroken. This form is most 

 prevalent in Natal and the adjacent coast country, but 

 also occurs near Grahamstown ; it is (except, perhaps, in 

 size) the furthest removed from the ordinary Avestern $ . 

 I know of no locality in South Africa in which the i s are 

 constant to any particular pattern ; but, amid all their 

 variation, I have noticed no example that approaches the 

 western $ in the strongly-marked inter-nervular rays of 

 the underside, except where (in some of those in which the 

 black markings are most develojDed) the rays cross the 

 discal band in the hindwings. 



Looking to the southern ? s, it is equally observable that 

 the scA^eral well-defined forms are not restricted to par- 

 ticidar localities. Cenca (typical) and Trophonius Avere 

 taken by me in the same spots at Knysna and Platten- 

 berg Bay respectively, and I have since received the Hippo- 

 coon-Yike form from the former locality.* Mr. Weale has 

 bred Cenea (variety), Trophonius, and a variation closer to 

 Hippocoon than to Cenea, from larvffi taken in one spot 

 near King William's Town; and Mrs. Barber has sent 

 me the three forms, as well as a variation (very near that 

 delineated on fig. 2 of the second plate accompanying my 

 paper in the Linnean Society's Transactions already re- 

 ferred to), all of which were taken at Highlands, near 

 Grahamstown. 



In Kaffraria proper, Commandant Bowker has met with 

 Cenea (var.), Trophonius, and the Uippocoon-like form, 



_ * From a collection brought from Knysna, by Mr. Lee, R.A., I acquired, 

 in 1871, a most singular new variation of this Protean $ . All the upper- 

 side markings in this specimen are white, and though answering to those 

 ot the Jlijjpocoon-Yike form, are so reduced and attenuated as (with the 

 single exception of the very much narrowed and dcntated sub-apical bar of 

 the torcwings) more to resemble those of the white-spotted varietv of 

 Cenea. 



