416 Coleopterological Notices, V. 



very slight, but as usual the head is a little larger and the protho- 

 rax a trifle less transverse in the male than in the female ; in the 

 former sex the fourth palpal joint is strongly and normally securi- 

 form, and the intermediate tibiae broadly and distinctly sinuate 

 within just beyond the middle. Fifteen specimens, almost uniform 

 in size and coloration. 



LATHRIWiEUM Ericlis. 



The species of Lathrimieum are rather abundant in the western 

 parts of North America, but only one has been thus far recorded 

 from the Atlantic regions. The seven representatives in my cabinet 

 may be veiy readily distinguished as follows : — 



Pronotum distinctly impressed along the median line except toward base. 

 Elytra flavate, each strongly, obliquely bimaculate with piceous-black, not 

 modified at apex in the female ; size larger. 

 Prothorax shorter and broader, more strongly arcuate at the sides ; strial 



intervals of the elytra convex subcostatuill 



Prothorax smaller, feebly rounded on the sides ; elytra smoother, the 



strial intervals not distinctly convex.; pictllin 



Elytra nearly uniform in coloration. 



Larger species, never much less than 3 mm. in length, with the oblique 

 discal impressions near the base of the pronotum nearly obsolete ; 

 apices of the elytra obliquely produced in tlie female. 

 Narrower, castaneous ; prothorax three-fourths wider than long, feebly 

 rounded at the sides ; elytra much longer than wide. 



flnietarium 



Broad, piceous-black ; prothorax twice as wide as long, strongly rounded 



at the sides ; elytra but slightly longer tban wide, tlie apices less 



produced in the female nigl'Opiceillll 



Small species, never much more than 2 mm. in length, tlie two approxi- 

 mate oblique impressions near the base of the pronotum very deep 

 and distinct, coalescent. 

 Prothorax very transverse, strongly and extremely widely reflexed at 

 the sides ; antennae more slender, one-half as long as the body ; color 



pale brownish-flavate reflexicolle 



Prothorax narrower, less broadly retiexed at the sides ; antennse shorter, 



more incrassate toward tip; color piceous-black spretlllll 



Pronotum not impressed along the median line ; surface even ; elytra short, 

 not more than twice as long as the prothorax SOI'didllllt 



Of sordidum I have before me a single mutilated specimen from 

 Fredericksburg, Yirginia; it is remarkably distinct; the oblique 

 impressions of the pronotum are obsolete in this example, and the 



