THE CANADIAN ENTOMOLOGIST. 55 



approaches closely to Cochlorhinus, but in the shape of the vertex and 

 front, which are the dominant characters in this group, it is widely diver- 

 gent, and approaches most closely to Acocephalus, from which, however, 

 the position of ocelli and venation renders it quite distinct. 



Key to the Species. 

 A Elytra short and stout, a transverse white band across the bases of 

 the anteapical cells reaching the costa, outer anteapical stylate, its 

 outer nervure straight or slightly rounding before the juncture. 

 Face half or more than half black. 



B Vertex and pronotum with alternate bands of black and light. 



Elytra with the nervures and transverse bands light. Male 



plates individually rounding at apex. . . Coquilletti^) .X^. 



BB Black except for the transverse band on the elytra and dot 



at apex. Male plates acute at apex stygica, n. sp. 



A A Elytra longer and narrower, without transverse white marking, and 

 lacking the second cross nervure ; outer anteapical cell angled out 

 nearly to the costa. Face more than half light signata, n. sp. 



Uhleriella Coquilletti, Van Dnzee. Plate 2, fig. 2. — Deltocephalus 

 Coquilletti, Van Duzee, Ent. Americ, VI., p. 95, 1S90. — Cat. p. 293. 

 Form of stygica nearly, but broader and with more flaring elytra ; vertex 

 and pronotum of same form and colour pattern as in signata, elytra 

 broad, clavus black with the nervures broadly light, corium brown, the 

 nervures narrowly light, an oblique band across the first cross nervure, a 

 transverse band across the second, a band across the base of the apical 

 cells forked at each end, and the narrow apical margin, milk white. 



This species is somewhat intermediate in form between the two 

 following and by itself might not be recognized as being related to 

 Cochlorhinus, but when compared with stygica this relation is at once 

 evident. 



Uhleriella stygica, n. sp. Plate 2, fig. 3. — Form of Coquilletti 

 nearly, slightly smaller and with a longer and more rounding vertex. 

 Shining black, a transverse band on elytra and another on face, white. 

 Length, 5 4.5 mm., £ 4 mm.; width, 1.5 mm. 



Vertex slightly sloping, transversely depressed, the margin sharp, 

 half wider than long in female, almost twice as wide in the male, slightly 

 obtusely angled, with the apex rounded off. Pronotum distinctly 

 transversely rugose ; elytra coriaceous, but little longer than body, 

 compressed at tip ; venation resembling that of C. pluto. 



