214 LEPIDOPTERA INDICA. 



ground colom' mucli darker, the discal purple line much more prominent, the 

 purplish-grey border of the other form entirely absent, and the series of ocelli 

 surrounded by a purple line. Every gradation is before me between the two 

 extremes. Mr. Hamilton obtained a very long series of it in the spring, below 

 Shillong in Silhet ; the greater portion were, as they should have been, of the dry- 

 season form, but a few were of the other extreme, and these he picked out, together 

 with intergrade specimens between the two extremes, and sent them to me. The 

 prevailing form of this species is therefore Khasiana in the dry season and true 

 Malsarida in the wet season ; and the occasional appearance of the one form or the 

 other out of its proper season will not upset the main fact of the occurrence of two 

 distinct well-marked forms corresponding to the seasons, the dry and the wet, into 

 which the Indian climate may be primarily divided." 



DiSTKiBUTiON. — The wet-season form has been taken in the Khasia Hills in 

 August. The late Mr. W. S. Atldnson obtained it at Chei"ra Punji. Specimens 

 from Sibsagar, in Assam, are in the Indian Museum, Calcutta. Mr. J. Wood-Mason 

 (J. A. S. Bengal, 1887, 350) records " one male from Cachar, taken on Nemotha 

 Peak in September." Mr. L. de Niceville (J. A. S. Beng. 1888, 274) records " the 

 capture of numerous specimens by the Rev. W. A. Hamilton below Shillong in Silhet, 

 remarking also, that it may be considered to be a rare species, as it appears to be 

 strictly confined to Assam, though it is probably common enough in the spots 

 where it is found at all." An example from the Naga Hills is in the collection of 

 Mr. P. Crowley. 



Of the illustrations of this species on our Plate 72, fig. 1, la, represent a male 

 of the wet-season brood, and fig. lb, that of a male of the dry-season brood. 



Genus NISSANGA. 



Nissanga, Moore, Lep. of Ceylon, i. p. 23 (1880) ; Trans. Ent. Soc. Lend. 1880, p. 169. 

 Mycalesis {Nissanga), Marshall and de Niceville, Butt, of India, etc. i. p. 131 (1883). 



Imago. — Wings short. Foreioing triangular, costa arched, exterior margin 

 very slightly convex and nearly erect ; costal, median, and submedian vein swollen 

 at the base; second subcostal branch emitted at end of the cell. Hindiring bluntly 

 conical; costa bi^oadly convex at the base, and thence oblique to the a23ex; exterior 

 margin oblique, convex ; cell short, quadrate, broadest at its end ; subcostal not 

 swollen, its first branch emitted immediately before end of the cell ; discocellular 

 erect, radial from the middle ; two upper median branches emitted at some distance 

 beyond end of the cell. Male with a tuft of fine hairs overlapping a glandular 

 patch of scales at base of the subcostal branches. Antennae gradually thickened to 

 the tip. Apical joint of palpi long and slender. Eyes hairy. 



Type. — N. Patnia. 



