1883.] MR. F, MOORE ON LIMNAINA AND ETTPLCEINA. 215 



Key to the Genera of Limnaina {continued). 



A. No "sexual mark " or scent-producing organ on hind wing. 



Genus Nectaria. 



Nectaria, Dalmann, in Billb. Enum. lus. p. 7Q (1820); Moore, 

 Lep. of Ceylon, i. p. 2 (1880). 



Idea, Fabricius, Illiger's Mag. vi. p. 283 (1807); Godart, Enc. 

 Meth. ix. p. 194 (1819). 



Danaus (part.), Latreille, Gen. Crust, et Ins. iv, p. 201 (1809) ; 

 Consid. Gen. C. et Ins. pp. 352, 440 (,1810). 



Hestia (part.), Hiibner, Verz. bek. Schmett. p. 15 (1816). 



Hestia, Doubleday & Hewits. Gen. D. Lep. p. 94 ; Distant, Rhop. 

 Malayana, p. 5. 



Wings semidiaphanous, large : fore wing broad, lengthened, tri- 

 angular ; costa slightly arched, apex quite convex, exterior margin 

 oblique, waved, posterior margin short, slightly concave in middle ; 

 costal vein extending to half its length ; first subcostal branch 

 emitted at about one fourth before end of the cell and anastomosed 

 to costal near its end, second branch from near end of the cell, third 

 and fourth at equal distances beyond, the fourth terminating above 

 and the fifth below the apex ; cell long ; upper discocellular in- 

 wardly oblique, bent near subcostal and in the middle, the lower 

 angle produced to a point within the cell, lower discocellular out- 

 wardly convex, first radial from upper angle and second from below 

 lower angle of upper discocellular ; three median branches wide 

 apart ; submedian very recurved, basal veinlet short, slender. Hind 

 wing lengthened, oval; costal margin slightly waved, anal angle 

 convex ; cell broad ; costal vein short, precostal forked ; subcostal 

 branches wide apart, first very short ; discocellulars bent outward at 

 their middle, the radial emitted from the angle ; median branches 

 wide apart ; submedian and internal vein slightly recurved. Body 



Proc. Zool. Soc — 1883, No. XV. 15 



