408 FAMILY XT. — staptiyltntd.t:. 



(1(1. Elytral sutun> niufh longer than thorax; head not wider than ely- 

 tra ; legs piceoiis ; length 2.0 mm. animatus. 

 aa. Transverse carina> without cusps; thorax with a narrow elevated longi- 

 tudinal carina on its basal half; length 2.3-2.S mm. cartnicollis. 



7R() (237(5). Stenls colonus Erichs.. Gen. Spec. Staph., 1840, 699. 



Rather slender. Black, shining, sparsely clothed with fine gray pubes- 

 cence; legs black; antenniX) and tarsi brownish. Head less than twice as 

 wide as long, surface between the eyes flat, finely and densely punctate. 

 .\ntenna) short, not longer than width of head; third joint less than one- 

 iialf longer than fourth. Thorax subcylindrical, widest slightly behind the 

 middle, finely and densely punctate. Elytra one-sixth longer than thorax, 

 about as wide at base as head, coarsely, densely and irregularly punctate. 

 .\bdomen slightly narrower at base than elytra, thence distinctly taiK^ring 

 lo apex, finely and rather closely punctate. Length 3-3.4 mm. 



Lawrence County; rare. May 23. 



TS7 ( ). Stenus suspectds sp. nov. 



Rather i-obust. Black, feebly shining, sparsely clothed with fine gray 

 hairs; femora black; antenmie, tibiae and tarsi piceous. Head one-half 

 wid(>r than long, coarsely and closely punctate. Antennae reaching middle 

 of thorax, third and fourth joints subequal. Thorax narrower than head, 

 widest at middle, slightly longer than wide, coarsely, densely and roughly 

 punctate. Elytra at base one-fourth wider than thorax, punctate as there, 

 the punctures on sides in evident, irregular channels. Abdomen at base 

 slightly narrower than elytra, feebly tapering to apex, rather finely and 

 closely inmctate, the transverse carinfe with four fine cusps. Tjcngth 3.5 nnii. 



Lake and Yifro counties; rare. May 2S-October L Taken be- 

 neath bark of elm. 



7RS (2377). Stenus htmtlts Erichs., Col. March., 1837. 554. 



Short, rather robust. Black, strongly sliining; legs reddish-piceous, the 

 under side of femora and basal joint of palpi much paler. Head twice as 

 wide as long, surface between the eyes feebly excavate, coarsely, closely 

 and evenly punctate, the longitudinal elevation rather strongly convex. 

 Antenna' dark piceous-brown. slightly longer than width of head. Thorax 

 robust, widest just behind the middle, ratlier finely, densely and roughly 

 punctate. Elytra at base scarcely wider than thorax at middle, rather 

 coarsel.v, densely and very roughly punctate. Abdomen :is wide as elytra 

 at base, sides nearly parallel, surface rather coarsely and closely jiunctate. 

 more finely towai'd ai)ex. J>ength 2.5 3 nun. 



Koscinsko roiiiily ; scarce. June 24. Casey's tiifninnop.^ is sairl 

 to be a .SATionym. 



S. aiihv(it\is Casey and rarivirolJis Casey were both described 

 Croni Micbi.uran and probably inhabit northern Indiana. 



