612 ColeojJterological Notices, VII. 



than 3^ the total width, the upper surface anterior to this large and nearly flat to 

 the frontal declivity, with two small tufts of erect setse at the middle, the 

 surface very feebly swollen along the median line at the middle and very 

 broadly and feebly impressed near each antennal prominence, the latter feeble. 

 Antennse nearly as iu cormUum, but relatively more elongate, much longer 

 than the prothorax and elytra combined, the sixth joint longer than either 

 of those adjacent. Prothorax scarcely 1:4 wider than long, widest and rather 

 prominently rounded before the middle ; apex more than }4 tlie maximum 

 width and fully % as wide as the base ; surface strongly convex, smooth, 

 sculptured along the base, the lateral fovese small, the median subobso- 

 lete, all nude. Elytra short; nearly % wider than long, fully twice as 

 wide as the prothorax ; sides strongly divergent and distinctly arcuate from 

 base to apex, the humeral swelling moderate; disk without striae or fovese, ex- 

 cept the sutural line, which is straight, deep and entire. Abdomen about as 

 wide as the elytra and a little longer, the basal segment broadly rounded at 

 apex and not quite three times as wide as long ; carinse short, subparallel and 

 very remotely separated. Legs slender. Length 1.6 mm. ; width 0.75 mm. 



Iowa. 



In the male of cornutum the body is narrower, much less ven- 

 tricose, flavo-testaceous in color, with the antennae but slightly 

 longer than the prothorax and elytra, and the latter scarcely more 

 than ^ wider than long ; the subbasal lobes of the head are flatter 

 and more broadly rounded, and the pubescence shorter and stiffer. 



The following species is evidently congeneric with curtipenne 

 and cornutum., though much smaller, and is possibly the form 

 alluded to by Dr. Brendel (Bull. Univ. Iowa, II, p, 4). 



A. caTiceps n. sp. — Ventricose, convex, highly polished and impunc- 

 tate throughout; body, legs and antennae rather pale rufo- testaceous, the elytra 

 darker, piceo-ruf ous ; pubescence moderately long and coarse, rather sparse and 

 strongly recurved. Head a little narrower than the prothorax and distinctly 

 longer, fully as long as wide, the eyes somewhat small, convex, and situated 

 at rather more than their own length from the base. Antennse distinctly longer 

 than the head and prothorax, moderately stout, the club very gradual in for- 

 mation, the last joint relatively larger and longer than in Eeichenbachia, and 

 as long as the preceding four combined; second joint distinctly smaller than 

 the first, cylindric and slightly elongate; third narrower, as long as the second, 

 strongly obconic ; fourth as long and broad as the first, elongate-oval, impressed 

 internally near the middle and base, without trace of dividing suture; five to 

 seven smaller, subequal and subquadrate; eighth and ninth wider, obtrape- 

 zoidal, increasing in size, nearly similar in form and about twice as wide as 

 long. Prothorax nearly '^4, wider than long, widest and somewhat prominently 

 rounded at about the middle; apex more than 14. ^^ maximum width and 

 fully ^ as wide as the base ; disk strongly convex, smooth but strongly sculp- 

 tured along the basal margin ; lateral foveae small, the median still smaller, all 

 nude. Elytra fully }4 wider than long, twice as wide as the prothorax, the 



