1268 FAMILY LV. TENEBKIONID.E. 



B depresses Rand., color of corlicola, elytra finely costate, in- 

 tervals with a single row of coarse punctures, length 5-7 5 mm is 

 said to occur in the Eastern and Middle States and Canada. 



Tribe VII. HELOPINI. 

 In this and the following tribes the front of head is separated 

 trom the labrum by a short transverse clypeus of leather-like tex- 

 ture. The present tribe is composed of medium-sized oblong or oval 

 species having the head immersed in thorax almost to eyes the 

 latter transverse, emarginate and coarsely granulated; antenna 

 gradually thickened from base to apex; front coxas rounded/ middle 

 ones with distinct trochantin ; hind cox* narrowly separated, the 

 intercoxal process triangular; tarsi pubescent beneath, front and 

 middle ones of males usually dilated. The tribe is represented by 

 the single genus : 



XXV. Helops Fab. 1775. (Gr., "a nail <- face.") 

 Dark metallic species, usually with a strong lustre About 35 

 are known, chiefly from the West and Southwest. But three have 

 been taken m the State, though two others perhaps occur. 



KEY TO INDIANA SPECIES OF HELOPS. 



a. Inner wings present. 



6. Side margins of thorax not undulated. 



c Elytra finely striate; intervals finely and sparsely punctured - apex 

 of last ventral segment with a depression. 2348 micans 



cc. Elytral striae deep; intervals convex, almost without punctures- 

 apex of last ventral without depression. venustus' 

 66. Side margins of thorax undulate; form narrower and less convex-' 

 elytral striae deep. 9 oaq 



„„ T .„ . , 1 2349. AMEEICANUS. 



aa. Inner wings absent. 



d. Side pieces of presternum with numerous shallow grooves. 



, 7 c,.-, . „ 2350. ^keus. 



dd. Side pieces of presternum coarsely punctured. cisteloides. 



2348 (7546). Helops micans Fab., Syst. Eleut., I, 1801, 157. 



Elongate-oval, convex. Blackish-bronzed, shining ;' elytra with indis- 

 tinct bluish and greenish-metallic stripes. Antennae slender, half the length 

 of body, the three outer joints shorter. Thorax one-half broader than long 

 emarginate in front, margins feebly sinuate, angles rectangular; surface 

 coarsely, rather closely and irregularly punctate. Elytral stria, fine, indis- 

 tinctly punctate; intervals flat, finely and sparsely punctate. Apex of last 

 ventral with a b-road hairy depression in male; a longitudinal and narrow 

 one m female. Length 10-17 mm. 



