Coleoj:i(erological Notices, III. 101 



pieces at the hind margin. The exposure caused by the removal 

 of the coxa, shows that this process is really a thin hoop, and, that 

 below its surface, the cavities are almost confluent, being separated 

 only by what appears to be a thin hyaline membrane ; the inner 

 edge of the hoop is ciliate. 



18 H. lielTinus n. sp. — Oblong-oval, subparallel, rather convex at the 

 sides. Hatter above, pale rufo-testaceous throughout, the head and prothorax 

 very sliglitly darker and more brownish ; lustre moderately shining ; pubes- 

 cence short, rather sparse, pale but inconspicuous. Head finely, rather densely 

 punctate anteriorly, more sparsely so toward base, the eyes in the male very 

 large and separated by one-fourth of their own width ; autennse long and 

 rather stout, distinctly longer than one-half the body, joints strongly obconi- 

 cal, a little more serrate internally than externally, and fully twice as long as 

 wide, third and fourth subequal in length. Prothorax large, two-fifths ^vider 

 than long, the apex strongly arcuate and continuous in curvature with the 

 sides, the latter broadly, strongly, nearly evenly arcuate throughout, the basal 

 angles slightly obtuse but not rounded ; base transverse, strongly sinuate at 

 each side of the middle; disk perfectly even, without impressions, convex, 

 distinctly wider behind the middle than at base, finely, densely punctate, the 

 punctures all distinctly separated. Elytra three times as long as the protho- 

 rax, and, at the middle, equal in width to the disk of the letter ; apex gradu- 

 ally, acutely ogival ; sides parallel and very feebly arcuate, the two bases 

 exactly equal ; disk with very fine strife which are generally very feebly 

 impressed, but more distinctly so toward the suture, the punctures of the 

 series fine, approximate and sublinear ; intervals nearly flat, finely, rather 

 densely and confusedly punctured. Abdomen somewhat coarsely but sparsely 

 punctate, the prosternum densely so. Legs moderate in length, the femora 

 robust, the posterior distinctly wider toward apex ; tarsi slender, the basal 

 joint of the posterior slightly longer than the remainder. Length 5.8-G.3 mm. ; 

 width 2.5 mm. 



Texas. National Museum. 



The specimens before me are males, and in this sex the last ven- 

 tral segment is unimpressed, much longer than the fourth and 

 strongly evenly rounded at apex. 



This is a comparatively isolated species, readily knovvn by the 

 peculiar form of the prothorax, long antennse, very large eyes and 

 robust femora, as well as by its peculiar pale ochreous coloration. 

 The prothorax is more than ordinarily deflexed, the longitudinal con- 

 vexity of th6 body l)eing therefore apparently greater than usual. 



19 H. porosicornis n. sp. — Oblong-oval, subparallel, rather strongly 

 convex, piceous-black above and beneath, the legs and antennfe slightly 

 paler, rufoscent ; surface rather strongly shining, the pronotum finely, feebly 



