64 Mr. Roland Trimen on some New 



very near to P. duplex, yet in the remarkable feature of the 

 double looping of the stria just beyond the ocelli on the 

 under-side of the hind-wing* it finds its ally in P. hcra, 

 Hewits., — a butterfly without any rufous-ochreous colouring 

 whatever, and so strongly resembling an Ypthima.\ 



Originally recorded by Boisduval from Zululand, the 

 rano-e of P. natalii has since been shown to extend to the 

 northern Transvaal, Bechuanaland, Matabeleland, and 

 Damaraland. Its distribution thus coincides largely with 

 that of P. duplex, var. major; and the two forms came 

 too-ether in the collections made in Matabeleland by Mr. 

 F.°C. Selous, Mr, A, W. Eriksson, and the late Mr. F. 

 Oates. 



Subfamily ACR^^INJE. 



Genus AcR^EA, Fab. 



AcR.EA AGLAONICE (Westw.). (Plate IV, fig. 4.) 



^ . Aerxa aglaonice, Westw., App. to Oates' " Matabele 

 Land," 1881, p. 346, n. 35, pi. F, ff. 9, 10. 



^ , ^. Acrma aglaonice, Trim., S.-Afr. Butt., i, p. 151, n. 43, 

 phIII,f.3g),(1887.) 



Aberration (Melanic). — ?. Smoky-black: fore-ioing with a 

 moderately- wide rufous-fulvous costal border from base to a little 

 beyond middle, a wider rufous-fulvous inner-margiual border 

 from rather before middle to posterior angle, and an apical-himl- 

 mai'ginal series of six inter-nervular rays, diminishing in length Init 

 increasing in breadth downward ; hind-vnng with neuration across 

 middle and a diifuse inner-marginal border pale rufous-fulvous with 



* It must, however, be observed that in several examples of both 

 sexes of P. duplex the lower of the loops is more or less developed, as 

 shown in my figure of that form from a Transvaal ^ specimen. 



f P. extensa (Butl.), from Salisluiry, Mashonaland (Proc. Zool. 

 Soc. Loud., 1898, p. 188, pi. xx, f. 1), seems to stand in the same 

 relation to P. ilnplex, var. major, as P. hera does to P. natalii ; that 

 is to say, the pattern and markings closely correspond in the two 

 forms, but there is exhibited a most conspicuous difference in colour- 

 ing, P. extensa being entirely devoid of the rufous-ochreous patches 

 so prominent in P. duplex. It occurs to me as possible that these 

 singular relaticms may prove to be seasonal in these butterflies ; but 

 I have at present no material or data affording support to this con- 

 jecture. The type of extensa ( ^ ) from Salisbury, Mashonaland, taken 

 by Mr. G. A. K. Marshall, is in the National Collection, accompanied 

 by a 9 duplex, var. major, from the same locality and donor. 



