BOARMILN^E. 139 



Subfamily BOAEMIIN^. 



Hind wing with vein 5 obsolete *, with no production of the outer 

 margin at the termination of the fold that represents it, and veins 

 6 and 4 considerably approximated ; vein 8 free and running close 

 along 7 to about middle of cell, very rarely anastomosing with it. 



In this subfamily a fovea or pit of hyaline membrane on the 

 underside of the fore wing at the base of vein 1, probably acting 

 as a tympanum, is developed in very many species in the males, 

 a character hardly found in any other group of Lepidoptera. 

 Another very characteristic structure is the dilatation of the hind 

 tibiae in the male, with a fold containing a tuft of long hair acting 

 as a scent-organ. 



Key to the Genera. 



A. Hind wing with a tail at vein 4, palpi porrect 



and hairy ; a frontal tuft. 



a. Fore wing with vein 10 absent 1. URAPTERYX, 



b. Fore wing with vein 10 present. [p. 144. 

 a'. Hind wing with veins 6, 7 stalked ; the tail 



short 2. SIRINOPTERYX, 



b'. Hind wing with veins 6, 7 from the cell. [p. 147. 



a 2 . Fore wing with veins 10 and 11 stalked 



and anastomosing with 12 3. THINOPTERYX, 



b z . Fore wing with vein 11 given off from 12 [p. 148. 



and anastomosing with 10, which is stalked 



with 8, 9 4. XEROPTERYX, 



B. Hind wing not tailed. [p. 149. 

 a. The scaling smooth; the head, thorax, and 



abdomen smooth or moderately hairy. 

 a'. Palpi upturned, reaching above vertex of 



head and fringed with hair in front 5. PAREUMELEA, 



b'. Palpi upturned, slender, and smoothly scaled. [p. 150, 



a 2 . Hind wing with vein 8 not anastomosing 

 with the cell; fore wing with the costa 



excised towards apex, which is falcate . . 6. AUZEODES,P. 150, 

 6 2 . Hind wing with vein 8 anastomosing with 



the cell 11. APLOCHLORA, 



c'. Palpi porrect, not reaching beyond the frons, [p. 156, 



and clothed with short hair. 

 a 2 . Fore wing with veins 10 and 11 stalked 



and anastomosing with 12. 

 a 3 . Hind wing with vein 7 from angle of cell. 

 a 4 . Fore wing with vein 5 from the middle 



of discocellulars 7. MYRTETA, p. 151, 



ft 4 . Fore wing with vein 5 from near upper 

 angle of cell ; antennae of <$ thickened 



and flattened 10. PLATYCEROTA, 



b 3 . Hind wing with vein 7 from before angle [p. 155, 



Of Cell 15. SCARDAMIA, 



b 2 . Fore wing with veins 10 and 11 not stalked. [p. 163, 



a 3 . Fore wing with veins 7, 8, 9, 10 stalked. 

 a 4 . Fore wing with vein 11 free. 



* Except in Boarmia isometra. 



