370 PROCEEDINGS OF THE ACADEMY OF 



CHEVROLATIA DuVal. 



C. amcena, rufa, flavo-pubescens, thorace latitudine longiore, ante 

 medium angustato, basi breviter earinato et utrinque bifoveato, foveis mediis 

 majoribus, elytris fovea basali versus scutellum, plicaque parva humerali 

 notatis. Long. 2 mm. 



Washington, D. C, Fort Lee, near New York, Mr Hike. Agrees with the 

 description of the European C. insignis DuVal, (Ann. Ent. Soc. Fr , 1850, 

 2d ser., viii. 46,) but differs from the figure by the thorax being less elongated, 

 and more suddenly narrowed from the middle to the apex. 



The genus will be easily distinguished among the Scydmaenidaj bj- the nar- 

 row body and approximate moniliform antenna?. The elytra are shorter than 

 the abdomen, leaving the pygidium exposed as in Eutheia. 



I am indebted to the liberality of Mr. Ulke for the second specimen found 

 by him of this remarkable insect. 



AGATHIDIUM Illiger. 



A. politum, semiglobatile, testaceum nitidum, thorace elytris vix 

 latiore, his vix obsolete punctulatis, stria suturali ad medium antice abbre- 

 viata, humeris obtusis rotundatis ; sutura frontali nigricante, tarsis crassius- 

 culis. Long. 2-5 mm. 



Mas mandibulo sinistro cornu elongato curvato nigricante armato. 



One male, York Co., Pa. ; Dr. Melsheimer. This species differs from all the 

 other species from the Atlantic States, by the characters given above ; it 

 agrees in form and sculpture with the California)! A. p u 1 c h r u m, but differs 

 from it by the color, and by the tarsi being less slender. A. e x i g u u m, which 

 resembles it in size and sculpture, differs by the wider thorax and more per- 

 fect power of contracting into a ball, indicated by the humeral angles of the 

 elytra being more obtuse, and very obliquely truncate. 



FALAGRIA Mann. 



F. scutellaris, attenuata, nigricans, subtiliter sericeo-pubescens, tho- 

 race ovato, latitudine longiore, dense punctulato, profunde canaliculato, scutello 

 canaliculato, elytris convexis haud puuctatis, abdomine subtiliter puuctato, 

 ano pedibusque testaceis, antennis fuscis. Long. 3-5. 



One specimen, Coney Island, near New York. Resembles F. bilobata by 

 the densely punctulate thorax, but differs by the thorax being more narrowed 

 behind, by the scutellum being distinctly channelled, and by the elytra being 

 not punctulate. 



F. bilobata, attenuata, nigricans, pube sericante subtili vestita, thor- 

 ace ovato latitudine paulq longiore, dense punctulato, profunde canaliculato, 

 scutello vix canaliculato, elytris convexis subtiliter punctulatis, abdomine 

 punctulato, ano saepe testaceo, pedibus testaceis antennis fuscis. Long. 

 3 4-5 mm. 



Aleochara (Aleodorus) bilobata Say, Tr. Am. Phil. Soc, vi. 156 ; ed. Leconte, 

 ii. 589 



Western States Illinois, Indiana, Missouri. In this and in the preceding 

 species the head is scarcely punctulate, and the hind angles of the thorax are 

 marked with a large puncture. 



F. cingulata, attenuata, picea, tenuiter pubescens, capite antice vix, 

 postice parce punctulato, thorace ovato latitudine longiore, parce punctulato, 

 profunde canaliculato; scutello punctato, subtiliter earinato, elytris parce sub- 

 tilissime punctulatis; abdomine laevi, segmentis duobus primis piceo-testaceis, 

 reliquis nigris, antennis pedibusque piceo-testaceis. Long. 3 3-5 mm. 



New York, Pennsylvania, Illinois. This species has the same form as F. 

 bilobata, but is very different in its sculpture. The very fine carina of the 

 scutellum is visible only under a high magnifier. The anterior dorsal seg- 

 ments of the abdomen, as in all the preceding species, are transversely im- 

 pressed, .with a line of punctures at the bottom of the impression, but the 

 dorsal surface is otherwise smooth. 



[Dec. 



