450 



FAMILY XT. — -STAPHYLTNTDiE. 



dd. Body more elongate, subdepressed ; hind angles of thorax acute; 

 color wholly piceous. 866. elongata. 



cc. Middle tibia* with two distinct terminal spurs. 



c. Elytra without a row of bristle-bearing punctures along the margin. 

 f. Abdominal segments without long seta? along the sides. 



g. Elytra densely punctulate, as long as wide ; length 4 mm. 



867. PUBESCENS. 



gg. Elytra smooth, each with three or four very fine raised lines ; 

 length 2 mm. 868. cabinula. 



ff. Abdominal segments with long setse at the sides, arising from 

 rather large deep punctures; elytra more or less reddish at 

 base. 



h. Thorax with minute transverse strigse' between the punctures; 



elytra with entire basal margin red. 869. opicum. 



lih. Thorax very finely punctate, not strigose ; elytra with a red 

 spot on base nearer the suture than the margin. 



870. BASALE. 



ee. Elytra with a row of bristle-bearing punctures along the sides; ab- 

 domen with setas at the sides; pale reddish-yellow, elytra with 

 tip and discal spot piceous. 871. sceiptum. 



C. littoreum Linn., a European species, 3.5-4 mm. in length, is 

 known from Massachusetts and Canada, and has been recorded by 

 Dnry from Cincinnati. 



864 (2647). Conosoma knoxii Lee, Proc. Phil. Acad. Nat. Sci., 1866, 374. 



Oval, subdepressed. Head and apical third or more of thorax black, 

 shining ; basal portion of thorax, a large oval space on each elytron, legs 

 and base and apex of antenna- dull yellow ; abdomen reddish-yellow, its last 

 three segments, the sides and apex of elytra, and the under surface piceous. 

 Thorax broader than elytra, hind angles subacute, disk finely alutaceous 

 and, as well as elytra, densely and very finely punctate and pubescent. 

 Elytra one-third longer than wide. Length 3.5-4 mm. 



Marion and Putnam counties ; scarce. September 25-November 

 28. Taken by sifting damp vegetable debris. 



*S65 (2648). Conosoma ceassum Grav., Mon. Col. Micr., 1806, 190. 



Oval, convex. Piceous, sparsely clothed with fine pale brown pubes- 

 cence; thorax and elytra usually with a narrow reddish space at base of 

 each; antenna- dusky, the apical joint paler; under surface reddish-brown, 

 the legs paler. Thorax slightly wider than elytra, sides regularly curved ; 

 bind angles broadly rounded ; disk finely and densely punctate. Elytra to- 

 gether as long as wide, densely and more distinctly punctate than thorax. 

 Length 3-5 mm. 



Throughout the State; common. January 21-November 17. 

 Occurs beneath bark and on fungi. Our largest species. 



866 ( ). Conosoma elongata sp. nov. 



Elongate-oval, subdepressed. Piceous, shining, sparsely clothed with 

 fine brownish-yellow pubescence; antennae and legs reddish-brown. Thorax 



