BOARMIIN A. 139 
Subfamily BOARMIIN &. 
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 
tibie 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, 
6. Fore wing with vein 10 present. [p. 144. 
a’. Hind wing with veins 6, 7 stalked; the tail 
REOEE ee ores a NETO Sian city cup Ubala ada uta tee 2. SIRINOPTERYX, 
6’. Hind wing with veins 6, 7 from the cell. [p. 147. 
a’, Fore wing with veins 10 and 11 stalked 
and anastomosing with 12 ............ 3. THINOPTERYX, 
6?, Fore wing with vein 11 given off from 12 [p. 148. 
and anastomosing with 10, which is stalked 
NACUBO tS elke steele RUE oNNe amen ap PREG Per Antpel Ar-H 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 ..... , 6, PAREUMELEA, 
6’. Palpi upturned, slender, and smoothly scaled. [p. 150. 
a>, Hind wing with vein 8 not anastomosing 7 
with the cell; fore wing with the costa 
excised towards apex, which is faleate .. 6. AUZEODES,p. 150. 
6°, Hind wing with vein 8 anastomosing with 
Ee) COL ae ie eeu aI a oo la 11. APLOCHLORA, 
ce’. Palpi porrect, not reaching beyond the frons, [p. 156. 
and clothed with short hair. 
a?, Fore wing with veins 10 and 11 stalked 
and anastomosing with 12. 
a>, Hind wing with vein 7 from angle of cell. 
a‘. Fore wing with vein 5 from the middle 
Ordiseaeellulars lis tc 3 Bhs «gt Os eos 7. MyrrTera, p. 151. 
b+, Fore wing with vein 5 from near upper 
angle of cell; antenne of 3 thickened 
ANG MN ACCOMM Yeo aay Vas kiotih 8 bas oa wae 10, PLATYCEROTA, 
6°. Hind wing with vein 7 from before angle [p. 155. 
ICOM MEO e ile i sa) es dss dee ene * 15. SCARDAMIA, 
b?. Fore wing with veins 10 and 11 not stalked. [p. 1638. 
a®, Fore wing with veins 7, 8, 9, 10 stalked. 
a‘, Fore wing with vein 11 free. 
* Except in Boarmia isometra. 
