138 MR. F. WALKER ON HETEROCEROUS LEPIDOPTERA 
cinereous, without markings. Length of the body 4% lines; of the 
wings 11] lines. 
Gen. AMATISSA, 0. g. 
Mas. Corpus robustum, pilis longis dense vestitum. Proboscis obso- 
leta. Palpibrevissimi. Antenne breves, late pectinate. Abdomen alas 
posticas paullo superans. Pedes breves. Ale ample ; anticee rotun- 
datz, costa apicem versus subconvexa, margine exteriore recto sat 
obliquo. 
Male. Body stout, thickly clothed with long hairs. Proboscis not ap- 
parent. Palpi very short. Antenne short, broadly pectinated to the 
tips. Abdomen extending a little beyond the hind wings. Legs 
short. Wings ample. Fore wings somewhat rounded at the tips; 
costa straight, except towards the tip, where it is very slightly con- 
vex ; exterior border straight, rather oblique; lst and 2nd inferior 
veins contiguous at the base; 3rd more than twice as far from the 
4th as from the 2nd. 
182. AMATISSA INORNATA, n.s. Mas. Cervina, lituris nullis. 
Male. Fawn-colour, without any markings. Length of the body 6 lines ; 
of the wings 15 lines. 
Gen. GAUGAMELA, n. g. 
Mas. Corpus robustum. Fronscarinata. Proboscis obsoleta. Palp; 
porrecti, validi, obtusi, caput perpaullo superantes. Antenne brevius- 
cule, late pectinate. Abdomen alas posticas superans, pilis basali- 
bus longis, fasciculo apicali fureato. Pedes breves, vix robusti ; tibiz 
late fimbriate, calcaribus longis. Ale spisse; antice apice rectan- 
gulate, margine exteriore postico sat obliquo; posticze margine in- 
teriore fimbriato. 
Male. Body robust. Front somewhat grooved. Proboscis not appa- 
rent. Palpi porrect, stout, obtuse, extending very little beyond the 
head. Antenne broadly pectinated, not long. Abdomen with long 
hairs towards the base, extending somewhat beyond the hind wings, 
slightly tapering from the base to the tip, furnished with a furcate 
apical tuft. Legs short, hardly stout; tibia broadly and densely 
frmged; spurs long. Wings stout, moderately broad. Fore wings 
rectangular at the tips; costa straight; exterior border slightly con- 
vex, rather oblique hindward. Hind wings fringed with long hairs 
along the interior border. 
183. GAUGAMELA ATRIFRONS, n.s. Mas. Cinereo-ferruginea, capitis 
vitta thoracisque macula quadrata atris, alis anticis basi lineis duabus 
canis subundulatis macula discali nigricante testaceo marginata lineis 
tribus exterioribus nigricantibus subundulatis vix conspicuis gutta 
subapicali testacea plaga marginali cervina. 
Male, Ferruginous, tinged with cinereous. Head with a broad deep- 
