Coleopterological Notices, VII. 611 



and % as wide as the base ; surface strongly convex, the fovese all nude, the 

 lateral small and feeble, the median still smaller but distinct. Elytra short, 

 % wider than long, % wider than the prothorax, the suture % longer than the 

 latter and % longer than the first dorsal ; sides broadly arcuate ; sutural stria 

 arcuate, the discal extending but little behind the middle. Ahdotnen not quite 

 as long or wide as the elytra, the first segment less than twice as wide as long, 

 feebly convex, the carinas subparallel, separated by 3^ the total width and ex- 

 tending to the middle or nearly so. Legs slender, moderately long. Length 

 1.28 mm. ; width 0.52 mm. 



Nebraska. 



The first dorsal of the male is deflexed in the middle of the 

 apical margin, the deflexed lobe transversely excavated and bear- 

 ing at apex a small nude slender and erect tubercle, the surface of 

 the tip above the excavation with two small feeble setose tumors. 

 The second segment is transversely and deeply excavated, the 

 hind margin reflexed, lamellate and setose in the middle. The 

 third has two small distant median tubercles, each of which bears 

 a stiff erect seta. Remainder of the dorsum unmodified. The 

 last ventral is very short as usual and has a short acute reflexed 

 apical lobe. The modifications of the tergum are quite similar to 

 those of maritima, difiering principall}^ in degree. 



Tomentosa and cincinnata are very closely allied but appear 

 to me to be at least subspecifically distinct ; they have nearly 

 identical male sexual characters, but so also do maritima and 

 parviceps, and yet these last are mutually widely separated in 

 very numerous characters, such as the larger size, more elongate 

 form, smaller head and very much shorter and more transverse 

 elytra of the latter. 



AWCH¥LARTHRO»f Bndl. 



The form described below from the male is closely allied to 

 cornutum in the sexual modifications of the head and antennae, 

 but difi^ers profoundly in general habitus, the hind body being 

 much shorter and more dilated and the elj'^tra very much more 

 abbreviated; the pubescence, also, is decidedly longer. 



A. curtipenne n. sp. — Strongly ventricose and convex, polished and 

 subimpunctate throughout ; body, legs and antennte dark rufo-testaceous, the 

 elytra scarcely paler ; pubescence conspicuous, rather long, pale in color, mod- 

 erately abundant and recurved. Head distinctly narrower but only slightly 

 longer than the prothorax, subquadrate, the eyes at the middle of the sides, 

 rather small, moderately prominent and very coarsely faceted ; basal parts of the 

 vertex elevated obliquely forward in two rounded prominences, separated by less 



