456 DR. T. A. CHAPMAN ON THE SPECIES [Apr. 27, 
24. cossea de Nicév. J. Bomb. N. H.S. ix. p. 271, pl. O. figs. 14, 15. 
The dorsal process has a rougher (softer) inner and a smoother 
(harder) outer portion. The clasps are large, very like those of 
cardia or camene, but with the striking difference that the teeth 
of the spinous process are directed distad instead of inwards. 
Text-fig. 95. 
cossea (B.M.). X 28. 
25. lanka Moore, Ann. Mag. Nat. Hist. ser. 4, vol. xx. 1877, p. 342. 
The spinous process of the clasp lies flat across the end, only the 
point being free. Along the distal margin the secondary spines 
are rather sharp and slender. No other species is quite near 
to it. 
26. rona Grose-Smith, Nov. Zool. i. p. 572, 1894 (no figure). 
26a. biagi Bethune-Baker, is identical with this. 
I have compared the type specimens and they agree perfectly, 
and the coloration and marking of the under side is so different 
from any other species that there can be no room for mistake. 
The under side differs from other Lyczenopses, much as L. parr- 
hasius does from H. argiades; 7.e. the markings, instead of being 
dark on a pale ground, often black on white, are very pale 
ochreous on a ground-colour of a not much paler tint. 
My photograph of the appendages is from those of the type 
specimen of biagi B.-B. 
