A REVISION OF THE ORIENTAL HESPERIULE. 147 



.'Tapena minuscula, n. sp. (Plate XVIII. fig. IS, d ; Plate XXII. fig. 17.) 

 Tapena thwaitesi, Elwes, P. Z. S. 1892, p. 659, in part. 



Similar to T. thwaitesi, but smaller and paler. This species is best characterized by 

 the peculiar clasp-form, which is figured. 



Two males from Bernardmyo (Doherfy) in Elwes's collection are the only ones we 

 have seen of this species. 



! Tapena hampsoni, n. sp. (Plate XVIII. fig. 19, d ; Plate XXII. fig. 16.) 



This species also is best characterized by the clasp-form of the male. It resembles 

 T. thioaitesi in size, but the upperside in the male is darker and consequently the dark 

 markings are less evident than in that species. 



Female. Upperside grey-brown ; fore wing with hyaline white spots as follows : — 

 An L-shaped one in the cell, an irregular one before the middle of cell 2, a punctiform 

 one in the base of cell 3, one in each of cells 6, 7, and 8, one in cell 11, and the indication 

 of one (on the underside) in the base of cell 10 ; hind wing with a subquadrate hyaline 

 white spot next the upper outer angle of the cell. Fringes brown in both sexes. 



The hyaline spot in the cell of the hind wing is of no importance as a differential 

 character, as it is present in some specimens and absent from others, both of this species 

 and T. minuscula. 



Hab. Nilgiris (Hampson), recorded as T. thwaitesi; N. Canara {Aitken). 



Ctenoptilum. 



Ctenoptilum, de Niceville, Jour. Bomb. Nat. Hist. Soc. 1890, p. 220; Watson, P. Z. S. 1893, p. 60. 

 Type vasava, Moore. 



Club of antennas finely pointed. Hind wing biangulated, produced into a tooth at 

 the apex of veins 4 and 7, bearing on the basal half a cluster of irregular hyaline 

 spots. Male with a tibial pencil of the ordinary form. Watson says of this genus: 

 " Vein 3 (of fore wing) usually given out beyond the end of cell — that is, veins 7 

 and 8 anastomose for a portion of their basal length (this is not an invariable character ; 

 the length of the anastomosis varies in different specimens, and occasionally, though 

 very rarely, veins 7 and 8 are free for their entire length)." In ten specimens in coll. 

 Elwes from Sikkim, East Pegu, Akyab, and Tenasserim respectively, and in eight 

 specimens in coll. Leech from Kiukiang and Ningpo, vein 8 is quite free from vein 7 ; 

 but in two specimens in coll. Elwes from Kiukiang, Central China, veins 7 and 8 

 anastomose through their basal half. 



The species occurring in our region may be separated as follows : — 



White spot in cell 7 of fore wing reaching beyond that in cell 6. 



Expanse about 34 mm. Fore wing above without any short sub- 

 terminal dark band near the apex of the costa. Lower lobe of 

 clasp broadly triangular vasava, Moore. 



