CELMNOBRniNM. 3 



of China, etc. ii. p. 570, pi. 39, fig. 1, <J (1893). de Niceville, Gazetteer of Sikkini, Butt. p. 177 

 (1894). Watson, Journ. Bo. Nat. Hist. Hoc.i.x. 1895, p. 422. Elwes and Edwards (part), Trans. 

 Zool. Soc. 1897, p. 115. 

 Celaenorrhinua (Plesioneurn) sumitra, Hannyngton, Journ. Bo. Nat. Hist. Soc. xx. 1910, p. 372. 



Imago. — Male. Upperside dark olive-brown, nearly black, the ])asal half of both 

 wings covered with browuish-ochreous hairs. Foreiving with five sub-apical spots, 

 larger than usual, the upper three conjoined in a very slight curve from near the costa, 

 the lower two nearly as large, a little outwards below, one above the other, a discal, 

 outwardly oblique, nearly straight band of fairly large spots, two conjoined across the 

 end of the cell, a rather elongated squarish spot a little larger across the middle of the 

 first median interspace, a smaller, somewhat oval spot iu the interno-median 

 interspace, a small round spot close to the base of the second median inter- 

 space, all whitish and semi-hyaline. Ilimhcuvj with a small orange spot at the 

 end of the cell, and a discal series of three or four small round orange .spots, the upper 

 iu cell 5, the next in cell 3, two in cell 1. Cilia of forewiug dark brown, of hiudwincj 

 orange, with dark bi"own patches at the vein ends. Underside paler and duller in 

 colour, the markings similar, but in the hindwing the discal .series of orange spots is 

 complete. Antennae entirely pure white above to the tip of the club ; palpi ochreous- 

 grey with black hairs, the base of last joint ringed with white, a white patch between 

 the palpi viewed from above, and a white band between the bases of the antennfe ; head 

 and body above and below concolorous with the wings ; thorax above with browuish- 

 ochreous hairs, beneath with whitish hairs ; legs ochreous-grey. 



Female like the male, Init the spots on both wings are larger, there is an 

 additional spot, ochreous in colour, between the upper discal spot and the costa in the 

 forewing, and the discal series of orange spots is complete on both sides. Antennas 

 with shaft spotted with white, a white streak beneath, below the club, its tip tinged 

 with dull ochreous-grey. 



Expanse of wings, $ \^, ? l^V inches. 



Habitat. — N.W. Himalayas, Sikkim, Naga Hills, China. 



Distribution. — The type is marked N.E. Bengal, evidently a wrong locality ; 

 Elwes records it from the Naga Hills, de Niceville from Sikkim, Doherty and 

 Hannyngton from Kumaon ; our description and figures are from a pair iu the B. 31. 

 C. sumitra is a rare species ; it is one of the largest species of the genus and has no 

 near ally. Doherty says,* " Sumitra is one of the swiftest and most active of insects, 

 incessantly whirling around flowers, or patrolling up and down a path, almost invisible 

 from the rapidity of its flight. Like its allies of the Tagiades group, it alights wirh 

 open wings. The egg is more than three-fourths as high as wide, generally white, with 

 verv numerous sharply cut ribs and a greatly contracted base without carina." 



* Journ. As. Soc. Bengal, 1889, p. 131. 



B 2 



