Coleopterological Notices, III. 99 



times as long as the prothorax* and exactly equal in width to the latter, 

 gradually ogival in apical third; sides parallel and nearly straight in basal 

 three-fifths ; disk finely, feebly striate, the striae rather feebly and finely 

 punctate, the intervals dull and alutaceous, finely, feebly, somewhat densely 

 punctate. Abdomen finely, somewhat sparsely and evenly punctate through- 

 out. Legs slender, the basal joint of the hind tarsi nearly one-third longer 

 than the entire remainder. Length 7.0-7.3 mm. ; width 2.8-3.0 mm. 



Arizona. 



A rather large, smooth and dull species, somewhat allied to poro- 

 sicornis and resembling the latter almost perfectly in outline and 

 size, but easily distinguishable by its dull lustre, finer and much 

 denser punctuation and strikingly more elongate basal joint of the 

 hind tarsi, the comparison being made from the males. In the 

 present species the latter sex is the only one before me ; the colora- 

 tion in these two specimens is probably abnormally pale from im- 

 maturity. 



16 H. apaclieanus n. sp. — Oblong-oval, rather convex, dark blackish- 

 castaneous above and beneath, the abdomen, legs and antennas slightly paler 

 and rufescent ; lustre dull ; pubescence extremely short, dense, pale, subseri- 

 ceous and moderately conspicuous, recumbent. Head dull, finely, very densely 

 punctate anteriorly, more sparsely so between the eyes, which are large and 

 separated by scarcely two-fifths their own width ; antennae stout, just percep- 

 tibly attenuate, not quite two-fifths as long as the body, joints strongly obconi- 

 cal, the intermediate nearly twice as long as wide, the third just visibly longer 

 than the fourth. Prothorax scarcely one-half wider than long, the apex broadly, 

 strongly arcuate, not quite continuous in curvature with the sides, the latter 

 broadly, strongly arcuate and convergent anteriorly, becoming gradually feebly 

 arcuate and nearly parallel near the basal angles, which are right and very 

 slightly blunt ; base transverse, the sinuations small and rather strong, the 

 median lobe subtruncate ; disk scarcely at all impressed, rather finely, deeply, 

 excessively densely punctate and dull, the punctures polygonally crowded 

 throughout. Elytra a little more than three times as long as the prothorax 

 and about one-fifth wider, rather gradually ogival in apical third ; sides thence 

 parallel and almost straight to the humeri, which are oblique externally but 

 not exposed at base ; disk with very feebly impressed series of small but rather 

 deep punctures, the intervals finely but strongly, extremely densely punctate. 

 Abdomen finely punctate, rather sparsely so except along the middle where the 

 punctures become extremely dense. Legs long and slender, the basal joint of 

 the hind tarsi distinctly longer than the remainder. Length 8.0 mm. ; width 

 3.2 mm. 



Arizona. 



I am not quite sure of the sex of the single individual before me, 

 but it appears to be a male. The species is exceedingly distinct in 



