88 THOS. L. CASEY. 



as head, narrowed moderately behind; sides slightly arcuate; anterior angles 

 rounded, posterior right ; lateral striae very strong. Scutellum triangular. Elytra 

 obtusely truncated behind, and leaving nearly the whole of the fifth ventral seg- 

 ment exposed in the male ; slightly longer, and more evenly rounded behind in 

 the female, glabrous and almost imperceptibly and irregularly striolate ; sides sub- 

 parallel. Fifth abdominal segment twice as long as the fourth. Antennae % 

 nearly as long as the body, first joint large, second smaller, third smallest; last 

 seven joints equal and cylindrical ; terminal process of last joint well developed. 

 Antennae 9 rather shorter, three outer joints a little wider; all very pubescent, 

 as is also the case with the dorsal and ventral surfaces of the abdomen. 

 Length 1.5 mm. 



Plate VI, Fig. 9, S . 



The above description was taken from the original type-specimen .in the 

 cabinet of Dr. LeConte. Widely distributed. 



The principal difference between fesfaceus and nitens are the following : 



In nitens the transverse groove of the head is rounded behind, and the 

 curve of emargination of the epistoma is very flat in the middle, but 

 curves to the front more rapidly at the sides, while in fesfaceus the trans- 

 verse groove is acutely angled behind, with the sides nearly straight, and 

 the emarginational curve is evenly rounding throughout, broader and 

 much more feeble. The anterior angles of the prothorax in mfe)is are, 

 in normal specimens, evenly rounded, without any appearance of a tooth, 

 while in normal specimens of fesfaceus this tooth is very prominent. The 

 integuments in nitens are thinner and more translucent, as a rule, than in 

 fesfaceus. The scutellum is acutely triangular in the former, and rounded 

 behind in the latter. The elytra of nitens leave nearly the whole of the 

 dorsal surface of the last ventral segment exposed, wliile those of testa- 

 ceus cover the entire abdomen with the exception of the merest tip of the 

 last ventral segment. This last differential character is the most constant 

 of all, and is the one upon whicli I chiefly rely in separating these very 

 closely allied species. 



12. Li. piinctatus Lee. — Form moderately elongated, depressed; surface 

 shining. Punctures of head and prothorax large and deep, but rather sparse; 

 elytra striate. Color dark testaceous, elytra pale. Head sub-quadrate, deeply ex- 

 cavated in front of the antennae ; eyes small, very slightly in advance of the pos- 

 terior angles, and coarsely granulated. Prothorax wider than head, broader than 

 long, narrowed behind ; sides almost straight; anterior angles not prominent, pos- 

 terior sharply defined; lateral striae double, well marked. Elytra as broad as 

 prothorax, nearly twice as long as head and prothorax together, entire, and evenly 

 rounded behind; sides parallel, nearly straight. Abdominal segments sub-equal. 

 Antennae % about as long as the body ; first joint very robust, and as long as the 

 three following together; second and third joints sub-globular; fourth longer; 

 fifth to seventh equal and cylindrical ; eighth smaller ; ninth to eleventh elongated, 

 and almost cylindrical ; terminal process of last joint not well developed. 

 Lensrth 1 .fi nun. 



