H. C. FALL 475 



variety. Marginatus is not especially related to limbatus Newm. 

 ( = discoideus Bowd.), with which Bowditch affiliates it in his de- 

 scription. 



156. Pachybrachys cruentus LeConte 



Black, elytra with a broad red margin occupying the outer 

 half and interrupted at the convexity; elytral punctuation mostly 

 confused, one or two lateral striae only distinct and entire, the 

 interval between the seventh and eighth somewhat more convex; 

 front without ocular hnes; front claws of male not appreciably 

 enlarged. Ave. length 3.5 mm. Texas. 



Head and thorax dull, opaque, front between the eyes broadly feebly im- 

 pressed along the median line, ])unctuation moderate; eyes separated by one 

 and one-half to one and three-fourths times the length of the basal antennal 

 joint in the male and by about twice the length of the basal joint in the female. 

 Antennae moderate, dull yellowish with the basal joint in part, and the outer 

 joints, blackish; tenth joint a little more than twice as long as wide in the male. 



Prothorax quite strongly narrowed in front, sides broadly arcuate, punctua- 

 tion not very coarse and only moderately close, a little uneven, with at most 

 only a trace of a median impunctate line; side margins not distinctly smoother. 



Elytra more coarsely pimctured than the prothorax, the punctures broadly 

 confused on the disk, the two lateral striae more or less distinct and a little 

 impressed, decUvity with the punctures usualty a little finer, in part subserially 

 arranged but not in impressed lines; shield wanting; marginal interspace im- 

 punctate or nearly so. 



Pygidium, body beneath and legs black, the femora sometimes brownish at 

 base. 



Length 3 to 4 mm.; width 1.6 to 2.1 mm. 



Distribution. — Texas: The type, and most of the few specimens seen were 

 collected by Belfrage. "P. Saddle" (Leng Coll.). 



This species is readily recognized by the color, which is appar- 

 ently quite constant. The elytra might with ecjual propriety be 

 described as red with a broad black sutural stripe which is con- 

 nected at the convexity with a marginal spot. It is very nearly 

 related to marginatus, which see for a statement of difTerenccs. 

 It seems to be somewhat scarce and is very sparingly represented 

 in collections. 



157. Pachybrachys dilatatus SulTrian 



Black, prothorax with sides and elytra with a large median 

 subquadrate spot extending from the side margin two-thirds to 

 suture, and an apical spot, red; prothorax finely rather sparsely 



TRAXS. A.M. EXT. SOC, XLI. 



