1898.] INSECTS AND AKACHXIUS FROM SOCOTRA. 37o 



by Butler (P. Z. S. 1881, p. 175), is in two of the present males, 

 including the best preserved of the three, distinctly orange as iu 

 the female. The size of all the smaller ocelli on the under surface 

 seems to vary in both sexe';. T' e upper surface of the hind wing 

 carries in the male the glandular patch and tuft of hairs which are 

 characteristic of the genus (Moore, Lepid. Ceylon, 1880-81, p. 20). 

 The under surface of the dorsal border of the fore wing, where it 

 overlaps the hind wing, is similarly clothed in the male with pale 

 and glistening scales, forming a pearly patch. Five specimens of 

 C. anijnana in Coll. Brit, Mus. from the Island of Johanna 

 (Comoro Group) are apparently" wet-season" forms ; but another 

 specimen fi'om the same locality and one from Zanzibar seem 

 to be "dry-season" forms and are indistinguishable from Socotran 

 examples. 



"The commonest butterfly in the island, inhabiting plains and 

 mountains alike. A ground-haunting species, apt to take cover. 

 jVever flying high, and always easy to catch." — E. N. B. 



Ntmphalin.e. 



Bybma BOYW, sp. n. (Nos. 16-22.) (Plate XXX. figs. 1 c^ , 2 $ .) 



Hypnnis com Feisth. ; Butl. Proc. Zool. Soc. 1881, p. 177, 

 pi. xviii. fig. 4. 



Types ( S and $ ) hi Hope Museum, Oxford. 



Seven specimens ; 4 cJ , 3 5 . Distinguishable from tlie 

 " dry-season " form of B. gotzius Herbst and B. anvatara Boisd. 

 by the following particulars : — (1) The area of fulvous ground- 

 colour lying between the black submarginal band and the oblique 

 median black patch on the disc of the fore wing is in B. hoi/di 

 divisible into two portions, separated by a pair of black denticula- 

 tions which almost meet one another along the course of the 

 first median branch. Of these two portions, the posterior is 

 consj)icuously narrower than the anterior, the narrowing being 

 caused mainly by the encroachment outwards of the oblique 

 median patch. The outline of this latter patch in the allied forms 

 tends rather sharply inwards between the first median branch 

 and the dorsal border, but in B. hoydi it is continued to the 

 dorsal border at such an angle as to preclude the fulvous area from 

 expanding again posteriorly, as it does in normal B. gotzius. 

 (2) A chain of small black spots is more or less visible, crossing the 

 fulvous median area of the hind-wing upperside. These spots, 

 which correspond to a series constantly present in B. ilithyia 

 Drury, are only rarely indicated iu B. gotzius. The above 

 characters appear to be constant and distinctive. One or more 

 of the following features may be found in specimens of B. gotzius 

 from various localities on the mainland, but they do not occur all 

 together except in B. hoydi, where the combination appears to be 

 constant : — (1) The black costal bar of the fore wing is continued 

 across the wing to meet the submarginal black band. (2) The 

 fulvous submarginal spots of the hind-wing upperside are lai'ge. 



