134 H. C. FALL. 



This species is rather common locally from the New England 

 States to Illinois. The localities represented in the material before 

 me are New Hampshire, Massachusetts, Rhode Island, Michigan, 

 Indiana, Illinois. It is not given in the New Jersey, District of 

 Columbia or Southwestern Pennsylvania lists. 



2. X. iilliiK* Lee. — Pieeous brown, a little smaller on the average tban rufo- 

 villosum, the description of which applies sufficiently well except in the following 

 particulars: The antennae (fig. 19) are distinctly more slender; joints two to 

 eight almost filiform ; the prothorax is a little less widely margined at sides and 

 the elytra are scarcely visibly granulose. Length 5.5--6.5 mm. 



Vancouver, Washington, Oregon, Northern California (Sonoma 

 County). 



I TO IM I VI new genus. 



Joints five and seven of antennae similar to and nearly as long as 

 ninth to eleventh ; terminal joints of maxillary palpi widest behind 

 the middle, compressed and truncate at apex ; last joint of labial 

 palpi short, rapidly dilated and widely truncate ; prosternal process 

 parallel, not dilated behind the coxae; plates of hind coxae gradu- 

 ally wider internally ; tarsi narrower, the third and fourth joints 

 fully as long as wide. Otherwise similar to Xestobium. 



One species is known. 



1. U. elegans Horn. — Parallel, rather strongly convex, blackish brown, 

 marmorate with short recumbent fuscous and ciuereous bairs, the former more 

 sparse, the latter condensed in small spots which tend to coalesce into imperfect 

 fasciae at the basal and apical fourth of the elytra, and are nearly wanting at the 

 middle and toward the apex of each elytron. On the prothorax the pale hairs 

 occupy the entire lateral fourth, a narrow transverse anterior fascia inclosing 

 two rounded apical dark spots, and a posterior longitudinal line each side of the 

 middle. Entire upper surface polished and rather densely punctate, not distinctly 

 granulate at any part. Antennae (fig. 20) less than half the length of the body, 

 first joint robust, a little longer tban wide; second somewhat similar but smaller ; 

 third and fourth narrow, the former more elongate ; fifth and seventh elongate- 

 triangular, twice as long and nearly twice as wide as the fourth ; sixth and eighth 

 triangular, scarcely longer than wide, narrower than and about half as long as 

 the fifth and seventh ; ninth and tenth similar to fifth and seventh but slightly 

 longer; eleventh still longer and slightly narrower, feebly fusiform. Prothorax 

 one-fourth wider than long, narrowed iu front, sides somewhat flattened but less 

 so than in Xestobium, disk not channeled. Elytra a little wider than and four 

 times as long as the prothorax. Lower surface nearly black, closely, simply punc- 

 tate and moderately pubescent. Tarsi paler, the first joint slightly longer than 

 the next two. Second joint feebly, third and fourth more strongly emarginate 

 superiorly for the insertion of the following joints. Length 5-6.5 mm. 



