﻿274 H [May, 



the angles broadly rounded, the membrane* attaching it to the epistoma very fall 

 and prominent : head rather short, sub-vertical, slightly narrowed behind the cheeks, 

 forming a short, thick neck : epistoma short, broadly and squarely truncated in 

 front, the sides sub-parallel, separated from the front and from the antennary orbits 

 by a strongly marked semicircular impression : eyes somewhat prominent, transverse, 

 notched in front ; a deep sulcus immediately within, and extending backwards to 

 beyond the posterior angle of, each eye, gives somewhat the appearance of a sup- 

 ra-orbital ridge. Antennoe — $ — elongate, slender ; joint 3 a little longer than 4 ; 

 4 — 7 sub-equal, elongate-obconic and slightly nodose at the tips : 8 — 10 a little shorter, 

 gradually widening from base to apex, and — together with 11 — studded with 

 sensitive pores ; 11 nearly twice the length of 10, a little curved and thickest 

 towards the apex (sub -fusiform) which is obtusely pointed : in the ? the antenna? 

 are shorter by one-third, the last joint is sab-cylindrical and rounded at tip : pro- 

 thorax sub-quadrate, a little narrowed anteriorly (especially in the $ ), sides inflexed, 

 separated from the flanks by a very fine raised line ; truncated in front, the fore 

 angles rounded and bent down, very finely margined at each side (but not at the 

 middle) ; base subsinuous, strongly margined and somewhat thickened ; the hind 

 angles small but prominent and acute : scutellum moderate, triangular, the sides 

 curved : elytra elongate, convex, gradually declivous behind, truncate (not margined) 

 at the base, which — including the shoulders- -is about as wide again as the pro- 

 thorax : shoulders prominent but rounded ; sides sub-parallel to three-fourths their 

 length thence obliquely narrowed to the apex, which is sub-acute : epipleural fold 

 sinuous,broadest at the base, terminating a little beyond the last abdominal suture : 

 legs — $ — long ; femora strongly clavate and much attenuated at the base : fore 

 tibia? moderately curved, compressed ; intermediate arched, and somewhat thickened 

 at the end : hind nearly straight : two short, stout spurs may be seen to the anterior 

 tibss only : in the $ the legs are shorter ; the fore tibia? scarcely, the intermediate 

 but very moderately, curved : tarsi somewhat villose beneath, elongate, especially 

 the intermediate and posterior; the 3 first joints of the anterior (and intermediate 

 in a lesser degree) a little expanded, especially in the $ ; the penultimate joint of 

 all small ; the last (especially the intermediate a.nd posterior) elongate : intercoxal 

 process moderately broad and gradually arched to the apex : metastemum elongate ; 

 its episterna parallel and slightly concave ; its epimera very distinct ; mesosternum 

 horizontal, broadly and deeply notched for the reception of the prosternal process, 

 which is strongly produced and pointed behind. 



A genus strongly recalling by its facies certain members of the sub- 

 family HelopincB ; and which, but for its elongate metasternum, I should 

 be inclined to place near the genus Hegemona. Its clavate thighs, 

 and long, slender antenna? are quite exceptional in the present sub- 



* Le Conte rails this membrane the clypeut ; Pascoe considers it the epistoma ; the epistoma of 

 Lacordaire=the clypeus of i'ascoe. This membrane in the majority of the Heteromera is not seen, it 

 may be very apparent in one genus and totally invisible in another closely related to it; in the genus 

 Oplocephala — and others— it is plainly visible in some species and not at allinothers. LeContemakes 

 use of this character to detach from the Ulominm certain forms which he places in his new " Tribe " the 

 Hypophlceini ; in this tribe he also places his genus Evoplus ; it seems to me perfectly impossible to dis- 

 sociate this genus from Oplocephala, for not only are the majority of its characters the same, but in 

 habit it is precisely similar (it is confounded with it by French Entomologists, under the name of 

 Oplocephala i-cornis, Chevt.), and moreover, it has the intermediate coxal cavities open externally, 

 plainly revealing the trochantin. — F. B. 



