78 Coleopte7'ological Notices, III. 



species, but as the number of representatives within the limits of 

 the United States is comparatively small, and as the male of several 

 of our species is still unknown to me, I have, in the following- pre- 

 liminary table, simply employed general characters relating to 

 superficial forai and sculpture, and based upon the limited material 

 before me. 



Our species as far as known may be distinguished as follows: — 



Pronotal punctures very sparsely and unevenly distributed, generally more or 

 less densely aggregated along the median line and in front of the scutellum. 



Pronotum rather polished, the punctures circular and perforate socia 



Pronotum exceedingly dull and alutaceous, the punctures larger, uneven in 



size, shallow, elongate and variolate SllllCUlieata 



Pronotal punctures more closely placed and evenly distributed, impressed. 

 Eyes in the female separated by approximately one-half their width. 



Eyes in the male not quite contiguous, their inner margins broadly 



rounded punctulata 



Eyes in the male subcontiguous along a long fine straight double line. 



ociilatifrons 

 Eyes in the female separated by distinctly less than one-half their width; 



legs usually red throughout eryflirociiemis 



Eyes in the female separated by fully their own width atra 



A number of additional species will almost undoubtedly be dis- 

 covered when southern Texas is more thoroughly and systemati- 

 cally explored. 



Li. socia Lee. — Proc. Ac. Phil., VII, 1854, p. 84. — Elongate-elliptical, 

 castaneous above, the under surface and posterior legs blackish ; anterior and 

 intermediate legs and antennae rufo-castaneous ; integuments rather polished 

 throughout, the pubescence coarse, rather short, sparse. Head somewhat 

 finely, sparsely, unevenly punctate ; eyes large and approximate ; antennje 

 very slender and filiform, nearly one-half as long as the body, the joints 

 cylindrical and nearly four times as long as wide, the third slightly shorter 

 than the fourth. Prothorax not quite twice as wide as long, the apex truncate 

 and three-fourths as wide as the base, the latter transverse, the sinuations 

 broad and strong ; sides just visibly convergent from the basal angles to ante- 

 rior third and straight, thence strongly rounded to the apex ; basal angles 

 right, not appreciably blunt ; disk rather coarsely, very sparsely and unevenly 

 I^unctate, the punctures larger and closer before the scutellum and narrowly 

 along the median line ; basal fovese large and distinct. Elytra four times as 

 long as the prothorax, and, in the middle, about one-fourth wider, gradually 

 acute toward apex, the base very slightly wider than that of the prothorax ; 

 sides feebly, broadly arcuate ; disk with rather fine, very even, moderately 

 impressed series of somewhat coarse, deep, close-set punctures, the intervals 

 nearly flat, finely, sparsely punctate. Abdomen finely but strongly, very 



