254 Mr. R. M‘Lachlan’s Descriptions of 
of the ramus discoidalis being simply furcate, and thus ending in 
only two apical sectors. 
It seems to me probable that, notwithstanding the great dissimi- 
larity in the shape of the anterior wings, the example from which 
I have drawn up this generic description may be only a female of the 
next genus (Asotocerus), and that the form of the wings may be 
only a specific character. The neuration presents many points of 
resemblance (excepting differences that are perhaps only sexual), 
and the form of the antenne, head, palpi, &c., is identical. How- 
ever the materials at my disposal are so slight, and the example 
on which I have founded Asotocerus is so much mutilated, that I 
think it best to place them in separate genera, rather than to run 
the risk of associating two forms which may in reality be distinct, 
‘especially as there are sufficient primd facie reasons for separating 
them. Both genera are easily recognisable by the peculiar cha- 
racter in the neuration, viz., the termination of the radius in the 
first apical sector, and not, as is usual, in the costal margin. 
1. Ganonema pallicorne, n. sp. (Pl. X1X. fig. 1.) 
G. antennis albidis, basin versus indistincte griseo-annulatis ; 
palpis griseo-fusco-hirsutis ; capite mesothoraceque fuscis ; 
alis fuligineo-fuscis, anticis margine costali nigricante, pur- 
pureo-iridescente, venis distinctis, nigricantibus ; pedibus 
albidis. ( 9.) 
Long. antenn. 16 lin.; corp. 5 lin.; exp. alar. 17 lin. 
Habitat in insula Sumatra (Wallace). 
In Mus. Saundersiano. 
Antenne whitish, finely and indistinctly annulated with grey 
towards the base. Head and mesothorax fuscous. Palpi clothed 
with long greyish-fuscous pubescence. Anterior and posterior 
wings dark smoky-fuscous, entirely without markings; the costal 
margin, especially in the anterior wing, broadly blackish, with a 
purple reflexion in certain lights; neuration strong and distinct, 
blackish. Legs whitish. Abdomen greyish-fuscous. The last 
abdominal segment (2) ends above in two large flat confluent 
triangular plates, the edges of which are hairy; beneath, these 
plates appear as a concave projecting cover. 
Genus Asorocerts, nov. gen. 
Antenne graciliores, alis triplo longiores. Ocelli nulli.  Palpi 
maxillares hirsutiores ; articulo basali brevi; 2° longissimo ; 
