322 MEMOIRS ON THE COLEOPTERA 



femora (cf) all strongly clavate, or ( 9 ) the anterior two moderately, 

 the posterior not, clavate; legs rather short. Length (cf 9 ) 2.7- 

 3.5 mm.; width 0.8-1.2 mm. District of Columbia, Illinois and 

 Wisconsin facetus Say 



Tenebrosus differs from signatus in its more slender form, blackish 

 coloration, more narrowly attenuate elytral apices and in other 

 features. Of the querci group, celtis is very distinct in its obliquely 

 truncate elytral apices and much shorter legs, among other char- 

 acters; tristis is distinct in its much more elongate form, being even 

 more slender in the female than the male of querci, also in its intense 

 black color and the very broad post-median elytral fascia, which is 

 even relatively broader than in facetus. Some errors relating to 

 the identity of angulatus and pictus Lee., and symmetricus and 

 confluens Hald., are rectified in the table; pictus was separated 

 from angulatus because of the distinctly less basal thoracic spine 

 and is plainly the species described by Haldeman, under the name 

 symmetricus, while the angulatus of LeConte is evidently the same 

 as confluens Hald., which was placed as a variety of symmetricus 

 by Haldeman and apparently overlooked by LeConte. 



Valenus Csy. 



This genus is somewhat allied to Lepturges but is of very much 

 broader form of body and with less narrowly separated coxae, the 

 intermediate being separated by a third of their own diameter; 

 it is also widely separated by the form of the tarsi, which are broad 

 and subinflated, the first joint of the posterior being not quite three 

 times as long as wide, expanded at apex and narrowed toward base, 

 barely longer than the next two joints combined, the second quad- 

 rate, not quite as long as wide. The claws are very small, divari- 

 cate, the femora all strongly clavate in the type, and the flanks of 

 the elytra are separated from the feebly convex upper surface by an 

 obtusely angulate line of flexure, obsolete basally; the elytra 

 throughout have long sparse erect bristle-like hairs; the thoracic 

 spines are very small and less basal then in Lepturges, being exactly 

 at basal third. The antennas are shorter and less tenuous than in 

 that genus and the outer joints gradually diminish in length; they 

 are, in the assumably male type, but little more than one-half 

 longer than the body. Valenus is also allied to the neotropical 

 Chcetanes Bates, but is not identical with that genus. 



