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_ §$OME UNDESCRIBED RHOPALOCERA IN THE BRITISH MUSEUM. 181 
from area 5, and it is only represented in areas 4 and 6 by a 
few scattered scales. The remainder of the band is much 
narrower than in typical leneus. On the under-side the spots 
composing the same band are very regular, rounded and. well 
separated from each other, and have much less white in their 
composition than those of typical lengus. The fore wing is quite 
typical. 
B.M. Type No. Rh. 160 3; Chaquimayo, S.E. Peru 
(Watkins). : 
HEspERID. 
Daimio thetys f. daiseni, form nov. 
3. Differs from typical thetys, as described and figured by 
Menetries in ‘ Cat. Mus. Pet., ‘p. 126, pl. x, fig. 8, 1857, in that 
the transverse white band of the hind wing, which in thetys is 
only barely indicated both above and below, is so developed as to 
form on the upper-side a complete macular band some 3 mm. 
wide, only becoming slightly diffuse towards costa and inner 
margin, and below a similar but more diffuse band, nearly twice 
as wide and running out between the veins in irregular rays, in 
which minute traces of a darker macular band are discernible. 
The basal area as far as the white band, except for the costal 
margin, a large dark oval spot in base of area 7 and a'smaller 
one below in the cell is densely covered with long grey-blue scaies. 
B.M. Type No. Rh. 141 ¢; Mt. Daisen, Japan. 
‘he type-specimen was obtained by Mr. J. G. Barclay, who 
has kindly presented it to the Museum. In the same district 
several others were obtained similar to the type and two males 
intermediate between them and typical thetys, these latter being 
most like the Amurland form, which frequently has much more 
obvious traces of the white transverse band on the hind wing 
than has the Japanese form. 
Cogia grandis, sp. nov. 
3. Upper-side, both wings: Uniformly dark brown. Fore 
wing: One minute spot in cell at about two-thirds from base, 
another slightly beyond, close to costa, and a pair just above 
and beyond cell-end, all semi-hyaline. Two similar very narrow 
transverse marks across and towards the bases of interspaces 2 ° 
and 38. A very fine darker anteciliary line. Fringes lighter 
brown flecked with black at the extremities of the veins. Hind 
wing: Immaculate. Fringes not flecked with black as in the 
fore wing, of same shade of brown, but between extremity of 
vein 2 and anal angle entirely black. A short pencil of hairs of 
same colour as the wing surface, in the position common to 
other species of the genus. 
Under-side, fore wing: Base, as far as the origin of vein 4, 
dark brown as above; hyaline markings slightly more pro- 
nounced, and also the dark markings of the fringes, than above ,; 
