60 HETEROMERA. 
groove extending completely across, the space between the two grooves raised and convex, the surface 
quite smooth ; elytra very elongate and narrow, as wide just before the apex as at the base, flattened on 
_ the disc, the sides compressed from a little distance below the base to about one fourth from the apex, 
and towards the base almost vertical from the sixth row of impressions, the surface with regular rows of 
deep foveate impressions, the impressions becoming finer at the apex and there placed in rather deep 
strie, the interstices narrow and rather convex, strongly so at the apex, the fifth costate from a little 
below the base to about the middle, the seventh costate at the extreme base, the first, third, fifth, seventh, 
and ninth each with a row of rather closely placed fine setiferous punctures extending from the base to the 
apex, the humeral callus smooth, the apices obtuse; beneath almost smooth, in great part piceous, the head, 
prothorax, and coxee more or less testaceous ; legs moderately long, piceous-brown, the basal half of the 
femora pallid testaceous and almost transparent, the anterior tibie finely and roughly punctured towards 
the apex, the tibie and tarsi clothed with very long hairs, the femora glabrous. 
¢. Anterior tibiz triangularly widened on the inner side near the base ; anterior femora concave within at 
the apex; intermediate tibiee very abruptly bent inwards and thickened from about the middle, the basal 
half flattened and opaque within ; intermediate femora clavate towards the apex, the clavate portion 
deeply concave beneath ; posterior femora on their inner side dilated at about the middle into a long 
and very broad pouch, the pouch deeply concave within, the apical portion also concave beneath. 
Length 64 millim.; breadth 13 millim. (¢.) 
Hab. Panama, Bugaba (Champion). 
One male example only. This remarkable insect will be readily identified from our 
figure. The male exhibits extraordinary sexual characters. 
EPICYDES. 
Last joint of the maxillary palpi very long, elongate-triangular, its outer side longer than the apical side; last 
joint of the labial palpi large and broadly widened outwardly, its apical side deeply concave-emarginate ; 
ligula prominent, deeply emarginate in the middle, and broadly rounded on each side in front; mentum 
large, fully as long as broad at the base, much dilated on each side in front; outer lobe of the 
maxillz moderately broad; mandibles simply unidentate at the apex ; antenne very long in both sexes, 
joint 3 small and very short, in the male only a little longer than, and in the female about twice as long 
as, 2,4 three or four (in the male) times as long as 3, 4-10 all very elongate and each very slightly 
widened towards their inner apical angle, 11 exceedingly long in both sexes; eyes exceedingly large, 
occupying the whole of the side of the head behind the orbits, above and beneath approximate in the 
male, narrowly separated in the female; head very abruptly constricted behind the eyes into a distinct 
neck ; anterior cox moderately exserted, the prosternum raised between them to the level of the coxe, 
and convex in the middle behind; metasternal episterna almost flat, without distinct groove ; tibial spurs 
short but distinct. 
This genus is proposed for two new species, both from Mexico or Guatemala. 
Epicydes approaches Disema, Makl., a genus containing numerous representatives in 
Tropical South America; but differs from it in the exceedingly short third joint 
of the antenne, broad and emarginate apical joint of the labial palpi, &c. As in 
Disema, the eyes are very largely developed, and occupy the greater portion of 
the head; in the present genus, moreover, the antenne are not strongly serrate (as in 
Disema), joints 4-10 being only a little widened towards their apex. The described 
species of Disema are stated to have an opaque patch on each side of the elytra, a 
character not shared by either of the two referred to Epicydes; certain undescribed 
forms, apparently referable to Disema, do not, however, possess this. | 
Nemostira, Fairm., from Madagascar, also resembles Epicydes in some of its characters. 
