122 DESCRIPTIONS OP NEW SPECIES. 



datis, lateribus repandis postice sinuatis, angulis posticis productis 

 divaricatis acutis, disco scabro medio subcanaliculato, callo paryo dis- 

 coidali utrinque signato ; elytris thorace latioribiis parallelis, apice 

 oblique angustatis, humeris rotundatis, confertim rugose punctulatis, 

 striis e punctis linearibus disjunctis hie inde confluentibus compositis ; 

 subtus dense rugose punctatis ; antennis capite thoraceque brevioribus, 

 extrorsum sensiin crassioribus, articulo 3io sequente sesqui longiore. 

 Long. -60 -85. 



Not uncommon in the northern part of the United States, and 

 in Canada. It is somewhat remarkable that a species so well 

 known in collections should not have been heretofore described. 



THARSUS LEC. 



398. Th. seditiosus. Elongatus depressus, rufo-ferrugineus, nitidus, 

 capite thoraceque punctatis, hoc latitudine breviore, angustato, lateribus 

 marginatis antice panlo rotundatis, apice late enaarginato, angulis anticis 



: acutis, ad basin bisinuato, angulis posticis rectis ; elytris parallelis, apice 

 obtuse rotundatis, striis impressis, punctatis, interstitiis parce punctu- 



: latis paulo convexis ; subtus punctatus ; antennis capite thoraceque 

 brevioribus, extrorsum incrassatis, articulo 3io sequente haud longiore. 



! Long. -20. 



Southern States ; not uncommon under bark. This insectwe- 

 sembles in form Uloma punctulata, but is much smaller. It 

 differs geuerically from Uloma by the front tibiae being slender 

 and not serrate, and from Ulosonia by the epipleurse not ex- 

 tending beyond the last ventral suture. The tarsi are clothed 

 with long coarse hair beneath ; the first joint of the hindmost pair 

 is scarcely longer than the 2d, and the 4th joint is longer than 

 the three others united, with the ungues large. The last joint 

 of the maxillary palpi is triangular ; the mentum is small, trape- 

 zoidal, wil the anterior angles bent inwards. The eyes are reni- 

 form, transverse, and slightly emarginated by the sides of the 

 epistoma. The 1st joint of the antenna? is as long as, but thicker 

 than the 3d, the 2d is shorter than the 3d, which is scarcely longer 

 than the 4th; the joints 3-10 are equal in length, but gradually 

 become broader, the 9th and 10th being nearly twice as wide as 

 their length; the llth is larger, rounded. The prosternum is 

 flat behind the coxa?, and not prominent ; the mesosternura is 

 declivous, and concave ; the middle coxes are inclosed by the 

 sternal pieces, and entirely without trochantin. 



This and the other genera with slender front tibia? which I 



