'590 Coieopterological Notices, V. 



XYLOTRECHUS Chev. 



The following species is allied to undulatus Say, but differs in 

 the. much broader bands before and behind the middle of the elytra, 

 interrupted only at the suture. 



X. gemellus n. sp. — Moderately stout, convex, dark red-brown in color, 

 densely clothed with short pubescence, generally dark in color but suffusedly 

 white at the apex of the pronotum and obliquely at the sides toward base ; 

 on the elytra the white pubescence is suffused at base throughout the width, 

 and, on each elytron there is a short longitudinal line behind the scutelhlm, 

 a short transverse discal line near the base, a broad and transversely lunate 

 band at basal two-fifths not produced anteriorly along the suture, a transverse 

 internally dilated spot at apical third, and a more suffused apical band. Head 

 with the two short frontal carinse distinct ; antennae slender, filiform and equal 

 throughout, two-fifths as long as the body, first four joints clothed with paler 

 ashy hairs, third distinctly the longest, tenth fully one-half longer than wide. 

 Prothnrax wider than long, constricted and broadly pedunculate at base, 

 coarsely and rugosely sculptured in short transverse confused ridges through- 

 out. Elijtra a little more than twice as long as wide, at base equal in width 

 to the pronotal disk ; sides nearly straight, distinctly (ionvergent from base 

 to apex, the latter broadly arcuato-truncate and feebly oblique, the external 

 angle obtuse but not at all rounded. Legs slender; basal joint of the hind 

 tarsi strongly compressed and much longer than the remainder. Length 

 14.0-15.0 mm. ; width 4.0 mm. 



Indiana. 



From undulat'ts and its varieties this species may be known at 

 once by the coarser sculpture of the pronotum, suffused pale pubes- 

 cence at the base of the elytra throughout the width, much less 

 prominent frontal carinas and several other features. The trans- 

 verse bands are wholly different in form, being wider, and poste- 

 riorly arcuate at the point where, in undulatus, they are anteriorly 

 angulate. There can be scarcely any doubt of the distinctness of 

 these species, although gemellus has possibly been regarded here- 

 tofore as a variety of undulatus. Two specimens. 



CYRTOPHORUS Lee. 

 The two species may be distinguished as follows: — 



Larger and stouter, the pronotum compressed and prominent along the middle ; 

 basal elevations of the elytra strong ; third antennal joint strongly spinose. 



Temicosiis Oliv. 

 Smaller and less convex, the pronotum not at all compressed ; basal elevations 

 feeble ; third antenna! joint briefly dentato-spinose within at apex. 



insinuans n. sp. 



