204 AMERICAN COLEOPTEKA. 



The sinuation in front of the hind angles is variable, being situ- 

 ated very close to the angle, and in some specimens so feeble as to 

 be with difficulty discerned. In these the hind angles would be 

 better described ns obtuse. In the other extreme, however, where it 

 is most strongly marked, they are decidedly rectangular. The two 

 are connected by numerous gradations in the series before me. 



This pretty little species seems nearly related to incurvus. Its 

 very robust and convex form and the form of the thorax will serve, 

 however, to separate it. The ill-defined elytral vitta, which is 

 almost always to be seen in the latter species, is here entirely wanting. 



It occurs from Canada and the New England States southward to 

 Florida and westward to Nebraska. 



6. T. fnscicornis Chand. — Form elongate, very convex. Color piceous, 

 slightly tinged with rufous, shining. Head as wide as the thorax at apex ; eyes 

 large, prominent; antenna; less than one-half the length of the body, fuscous, 

 the hasal joints testaceous; palpi rufo-testaceous. Prothorax subquadrate, as 

 wide at base as apex, about one-half wider than long: apex truncate; anterior 

 transverse impression obsolete, the posterior rather feebly impressed, finely 

 punctulate and not tripunctate at middle; median line very fine, abbreviated at 

 each end; basal impressions small; base truncate; sides with the margin nar- 

 rowly reflexed, strongly arcuate in front, oblique behind ; hind angles obtuse, 

 not carinate. Elytra slightly wider than the thorax, oblong-oval, elongate, with 

 a moderately deep, impunctate, sutural stria, which does not attain the base, the 

 other dorsal strise obsolete; first dorsal puncture about one-fourth from base, the 

 second slightly behind the middle. Body beneath rufo-piceous, the head and 

 thorax slightly paler, as are also the last segments of the abdomen; epipleura? 

 dark rufous. Legs testaceous. Length .10 inch ; 2.5 mm. 



Most nearly related to granariiis, but more elongate and larger, 

 with the posterior transverse impression feeble. T. gemellus Casey 

 is without doubt synonymous. 



The above description was taken from a unique in the LeConte 

 collection received from Chaudoir. 



Described by Baron Chaudoir from Louisiana. 



7. T. incill'VUS Say. — Form elongate, moderately convex. Color varying 

 from rufo-piceous to nearly black, shining, the elytra usually with an ill-defined 

 pale vitta extending from the humerus nearly to the apex and dilated at each 

 end, sometimes interrupted at middle, being then represented by a humeral and 

 subapical spot Head as wide as the thorax at apex ; eyes large, prominent; an- 

 tenna? rather less than one-half the length of the body, the hasal joints testa- 

 ceous, the outer ones more or less fuscous. Prothorax quadrate, about one-half 

 wider than long, distinctly wider at base than apex; apex truncate; anterior 

 transverse impression obsolete: median line very tine, abbreviated at each end; 

 posterior transverse impression deep, distinctly punctulate, not tripunctate at 



