4:)6 MR. L. DE NicfiviLLE ON NEW OR [May 3, 



Cheritrella, nov. gen. 



Fore wing with the costal marc/in slightly and regularly arched ; 

 the outer margin highly truncated from the apex to the termination 

 of the third median nervule, this truncated portion, moreover, being 

 concave ; below the third median nervule to the inner angle the 

 margin is nearly straight and oblique ; inne?' margin straight. Gostal 

 nervure very short, not nearly reaching to opposite the apex of the 

 cell ; the first, second, and third subcostal nervules at regular dis- 

 tances apart before the origin of the upper discocellular nervule, the 

 fourth springing from the third about the middle of its length ; 

 upper discocellular nervule directed outwards, middle and loiver 

 upright and concave ; the bases of the second and third median 

 nervules half the distance apart of the bases of the second and first ; 

 submedian nervure straight. Hind wing with the costal margin 

 strongly arched at the base, thence to apex nearly straight ; outer 

 margin to base of long tail at termination of first median nervule 

 straight but waved from thence to anal lobe at right angles ; abdo- 

 minal margin strongly convex at base and highly excavated above 

 the anal lobe ; a short tail at termination of submedian nervure. 

 Costal nervure strongly arched at base, afterwards nearly straight ; 

 Jirst subcostal nervule originating some little distance before apex of 

 cell, nearly straight ; discocellular nervules of nearly equal length, 

 concave, outwardly oblique, the origin of the third median nervule 

 at the lower end of the cell, the second just before its end, that of 

 the first being fully four times as distant from that of the second as 

 is the latter from the third ; submedian nervure nearly straight ; 

 internal nervure very short, ending on the abdominal margin above 

 the deep excavation, and highly sinuous. 



Nearest to Tichei-ra, with which it agrees in having no secondary 

 sexual characters in the male, in the neuration of the hind wing ; 

 also in the length and position of the tails, the anal lobe, and the 

 deep excavation above it, but differs from it in the truncation of the 

 fore wing, the costal nervure terminating long before the apex of the 

 cell, and the fourth subcostal nervule spiinging from the third about 

 its middle instead of considerably nearer the apex. 



Cheritrella TRUNCirENNis, n.sp. (Plate XXXIX. figs. 4, c? ; 

 3,?.) 



Hah. Sikkim. 



Expanse. <S 1"5 to 1-6, $ r45 inch. 



Male. Upperside : both wings black. Fore wing with all but the 

 costa narrowly, and the outer margin broadly deep dull purple, with 

 a very slight gloss in certain positions. Hind wing with a large 

 brilliantly iridescent, rich bright steel-blue ' patch from the base of 

 the wing, not reaching the outer n)argin, anteriorly bounded by the 

 costal nervure, extending into the upper portion of the discoidal 



^ Very similar to the colour exhibited in the male oi Jana'des bocJiiis, Cramer, 

 on the upperside, but not quite so brilliant, and more jiurple in shade rather 

 than blue. 



