BY H. J. CARTER. 109' 



distinguished by its almost glabrous surface, besides the other 

 characters described above. With a strong lens, very minute 

 bristles may be detected on the elytra, but they are in marked 

 contrast to the evident clothing of all the preceding species 

 described by me. The female specimen is larger, and has its 

 anterior px'ocesses more recurved and a little wider at the apex 

 than the male, so that the apical part of the head is covered; in 

 the male, they are more extended, so that there is some clear 

 space between them and the front outline of the head. Types in 

 author's coll. 



HELiEUS OPACICOLLIS, n.sp. 



Broadly ovate, very convex, head and prothorax opaque, elytra 

 subnitid, upper and lower surface black, antennae and palpi 

 slightly piceous. 



Head with labrum narrowly truncate in front, straight at sides, 

 epistoma truncate, not reflected, and arched (from front view); 

 sides a little raised, widening in a straight line to the antennal 

 orbits, front with epicranium raised, anterior portion depressed 

 to the plane of the epistoma, without suture to define these 

 regions; the whole upper surface of head and prothorax closely 

 and distinctly granulose; antennae not extending to base of pro- 

 thorax, third joint subcylindrical, as long as the fourth and fifth 

 combined, 4-7 wider and subtriangular, 8-10 much widei' than 

 the preceding and round (8th larger than 9 or 10), eleventh 

 largest of all, widely ovoid. Prothorax more convex than in H. 

 Gilesii, glabrous, nearly twice as wide as long (5-2 x 10 mm.), 

 foliate margins more concave, rugose and narrow, width of disc 

 to combined maigins as 3 : 2, the anterior processes rather narrow,, 

 widely overlapping, acute and incurved (falcate) at the points, 

 enclosing the head in a transverse ellipse (1 "5 x 3 mm.), sides 

 gradually narrowing from base to apex, with apex more blunt 

 and incurved than in H. Gilesii, a little incurved at postei-ior 

 angles, these acute, dentate, and overlapping elytra; outside edge 

 raised and reflexed (seen sideways, very narrow and round j, basal 

 margin not apparently serrated. Disc very convex, with central 

 carina starting near apex, rising to an elevated flattened hump 



