BY A. J. TURNER. 565 



Gen. 2. C o m o s t o l a. 



Comostola Meyr., Proc. Linn. Soc. N. S. Wales, 1887, p. 869. 



Face smooth. Tongue well developed. Palpi slender, 

 porrect, in ^ moderate, or rather long, in ^ ^ong; second and 

 terminal joints smooth-scaled; terminal joiat usually short in 

 (J, always elongate in 9- Antennte in ^ pectinated, apices 

 simple; in ^ simple. Tiiorax and abioraen not crested; thorax 

 not hairy beneath. Posterior tibiae with all spurs present; in ^ 

 dilated, with terminal spurs shortened, and a tuft of long hairs 

 on inner side, sometimes with a short stout terminal process. 

 Hindwings with termen rounded or slightly angled on vein 4, 

 not projecting; a strong rounJed costal expansion at base; 

 frenulum and retinaculum obsolete in both sexes. Forewings 

 with 3 and 4 stalked or connate, 6 separate or short-stalked, 11 

 arising from cell or stalked with 7, 8, 9, 10 beyond 6, not 

 anastomosing; discocellulars separate or widely separate on vein 



5, dorsal arising posteriorly to costal. Hindwings elongate; 

 with 3 and 4 stalked, 6 and 7 stalked; 8 connected with cell 

 at a point near base and rapidly diverging; discocellulars nearly 

 straight, slightly oblique, dorsal sometimes curved so as to be 

 more oblique; costal edge of cell considerabl}'^ over |^. 



Type, lodis Icesaria Wlk. The structure of the cell of the 

 forewings, together 'with the elongate hindwings. which may 

 have the termen either strongly rounded, or slightly angled on 

 vein 4, but never projecting, are the distinguishing marks of this 

 genus. The separation of the discocellulars of the forewings, 

 sometimes slight, becomes very pronounced in C. Icesaria and C. 

 nereidaria. Vein 11 may either arise free from the cell, as in 

 most Geometrince; or may be stalked with 7, 8, 9, 10 well beyond 



6. In view of the close specific relationship of C. suhiiliaria 

 Brem., from Eastern Asia, which has the former structure, with 

 C. Icesaria, I do not think the difiPerence can be made use of for 

 generic subdivision. 



1. Hindwings obtusely angled on vein 4 2. 



Hindwings rounded 5. 



