THE ANT-LI KK STONE BEETLES. 297 



<j. Elytra strongly impressed each side of suture near base. 

 h. Elytra long, rather acutely pointed behind, fully one- 

 half longer than wide; blackish-piceous in color; length 



2 mill. LONGIPENNE. 



hit. Elytra shorter, more obtuse at apex, less than one-half 

 longer than wide, dull red, clouded with blackish be- 

 hind ; length 1.9 mm. 575. FORMALE. 

 gg. Elytra feebly or not at all impressed 011 basal half; black, 

 tibia? paler, tarsi yellowish. 576. FLAVITARSE. 

 ff. Species less than 1.3 mm. in length; thorax shorter than 

 wide, with sides straight; piceous black, the elytra paler. 



DENTIGER. 



ee. Clypeal tooth very minute. 



i. Suture not at all elevated or headed toward base, the sub- 



sutural impressions obsolete ; black, elytra red, blackish 



toward tips. 577. FOSSIGEE. 



ii. Suture more or less beaded toward base, the impressions 



long and distinct: body black, throughout. FKMORALE. 



dfl. Elytral pubescence coarse, shorter and recurved. 



j. Antenna? stout, not longer than head and thorax, strongly cla- 



vate, the next to last joints very transverse. 

 A'. Larger. 1.4-1.0 mm.; basal fovese of elytra strong, the outer 

 large. 578. CLAVICOKNE. 



A'/r. Smaller, not over l.li mm.; basal fove:e small and feeble; an- 

 teunal club more nearly M-jointed. 57!). ABWC K.NS. 



jj. Antenna' rather slender, much longer than head and thorax, 

 the next to last joints fully as long as wide; body narrowly 

 oval, pale dull yellow throughout. FURTIVUM. 



cc. Clypeus without trace of median tooth. 



7. Thorax without distinct transverse impression at base; elytral 

 suture beaded toward base, the pubescence long, even and sub- 

 erect ; color black. 580. IXTEGRUM. 

 U. Thorax with a distinct interrupted impression near base. 

 m,. Body more inflated; elytra always distinctly more than one- 

 half wider than thorax, the suture with a broad bead which 

 is broadly expanded at base; blackish-piceous, elytra dark 

 reddish-yellow. INNOCUUM. 

 mm. Body narrow and elongate, but convex ; elytra almost one-half 

 wider than thorax, the latter with transverse impression 

 strong; head large, nearly as wide as thorax. 



5S1. CLAVATUM. 



&6. Antennal club 3-jointed, abrupt; length not over 1 mm. 



11. Clypeal tooth well developed, narrow and acute: antemue stouter: 

 'color dull brownish-yellow. 582. UEIJIT.ITANS. 



nn. Clypeal tooth very minute, short and obtuse; antennal funicle 

 much more slender; hind body narrowly oval; pale chestnut 

 brown. 583. FTLVUM. 



ua. Basal joint of hind tarsi elongate, always distinctly longer than sec- 

 ond, joints one to four decreasing rapidly in length; hind tibue of 

 male with a slender terminal spur. 



