96 Coleopterological Notices, III. 



long, strongly but broadly arcuate at apex, thence broadly but more strongly 

 arcuate laterally, the sides becoming feebly divergent and feebly arcuate to 

 the basal angles, which are right and distinctly blunt ; base transverse, the 

 sinuations narrow and strong ; disk scarcely impressed, coarsely, deeply, 

 sparsely punctate. Elytra nearly four times as long as the prothorax, and, in 

 the middle, just visibly wider in the male, quite distinctly wider behind the 

 middle in the female, rather obtusely ogival at apex, the sides very feebly 

 arcuate, becoming nearly straight toward base ; disk with rather distinctly 

 impressed series of moderately coarse, deep, punctures, the intervals finely, 

 sparsely punctate. Abdomen finely, sparsely punctate. Legs slender, the 

 basal joint of the hind tarsi much longer than the remainder. Length 5.7-6.5 

 mm. ; width 2.4-2.8 mm. 



Iowa. 



A somewhat small, broadly depressed species for the present 

 section of the genus, with rather short prothorax, the sides of 

 which are unusually convergent from the base. It is easily recog- 

 nizable by its longer, more shaggy pubescence, as well as by the 

 antennal structure of the male. 



The anterior tarsi of the male have the third joint very rudimen- 

 tarily lobed, the fourth distinctly so ; the intermediate and posterior 

 tarsi having simply the penultimate joint lobed beneath. 



12 H. ol) senilis Say.— Journ.Ac. Phil., V, 1827, p. 242.— Oblong-oval, 

 strongly convex, blackish-piceous, the abdomen, legs and antennae slightly 

 paler, rufo-piceous, polished throughout, the pubescence rather long, coarse, 

 pale, moderately dense and conspicuous. Head somewhat coarsely, sparsely 

 punctate, the eyes moderate, separated by about their own width in both 

 sexes ; antennae slender, filiform, two-fifths as long as the body, joints four to 

 eleven equal in length, barely perceptibly obconical, much more than twice 

 as long as wide, the third very short and one-half as long as the fourth in 

 the male, long and fully equal to the fourth in the female. Prothorax rather 

 long, but slightly more than one-half wider than long, almost semi-circularly 

 rounded in anterior half, the sides thence feebly divergent (male), or parallel 

 (female) to the base and feebly but distinctly arcuate ; basal angles right 

 and slightly blunt ; base transverse, the sinuations narrow and strong ; disk 

 obsoletely impressed in the middle toward base, and also in the position of the 

 basal foveae, not very coarsely, deeply, sparsely punctate. Elytra scarcely 

 three and one-half times as long as the prothorax, and, toward base, equal in 

 width to the latter, somewhat broader behind the middle in the male, almost 

 parallel in the female, the apex rather abruptly ogival ; disk with rather 

 strongly, broadly impressed series of small, rounded, distinct punctures, the 

 intervals rather closely punctate in the female, more sparsely so in the male. 

 Abdomen finely, sparsely punctate throughout in both sexes, the metasternum 

 very coarsely, sparsely so externally, gradually finely and more densely so 



