1268 FAMILY LV. TENEBKJONIIXE. 



B. il< /n-cssus Rand., color of coylicoln, elylra 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. IIKLoriM. 



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

 from the lahrum by a short transverse elypeus 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 1 

 gradually thickened from base to apex ; front coxie rounded, middle 

 ones with distinct trochantin ; hind cox;v 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. IlELOPsFab. 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 in the State, though two others perhaps occur. 



KEY TO INDIANA SPECIES OF IIELOPS. 



(/. Inner wings present. 



1). Side margins of thorax not undulated. 



c. Elytra finely striate; intervals finely and sparsely pimcture'l ; apex 



of last ventral segment with a depression. 2348. MICANS. 



cc. Elytral strife deep; intervals convex, almost without puncture-;: 



apex of last ventral without depression. VEXTSTI s. 



bl). Side margins of thorax undulate; form narrower and less convex; 



elytra 1 strife deep. 234!). AMERICAN rs. 



</. Inner wings absent. 



d. Side pieces of prostermnn with numerous shallow grooves. 



2:\~A>. .-KRKl'S. 



dd. Side pieces of prosternum coarsely punctured. CISTELOIUES. 



L'34X <7r>4<;>. HELOPS MHANS Fab.. Sysl. Eleut., I, 1SI.H. 157. 



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

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

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

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

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

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

 ventral with a broad hairy depression in male: a longitudinal and narrow 

 one in female. Length 10-17 mm. 



