tff FAMILY IT.— OARABIMJ. 



Common along streams and margins of ponds and lakes toongh- 

 out the State April 3-December 25. One specimen from Putnam 

 CounS was taken on the latter date, indicating that the spemes 

 probably hibernates in the imago stage. 



VI. Blethisa Bon. 1813. (Gr., "to throw.") 

 Resembling Elaphrus but much larger, with proportionallj ^nar- 

 rower head and smaller eyes. Head and thorax parallel, the tor- 

 * r with a deep groove each side; last joint of -J^ ( 

 short They live during summer near ram pools or small bodies ot 

 tter One of the four spates known from the United States has 

 been taken in Indiana, while another perhaps occurs. 



KEY TO INDIANA SPECIES OE BLETHISA. 



, TUorax a— smooth above an, beneath except in 



press-ions.; length 15 mm. whl2ram 

 aa. Thorax subcordate, flne.y and densely punctate beneath 



40 (164) Blethisa quaiiricollis Hald., Proc Phil. Acad. 

 Nat. Sci.. Ill, 1847, 149. 

 Blackish or coppery bronze above; black beneath. Thorax 

 anadrate sides feebly curved, margins strongly reflexed, 

 b ^ impressions sparsely punctate, hind angles obtuse y 

 rounded. Elytra striate, punctured, each with about ten 

 foveie arranged in three rows. Length 15 mm. (Fig. 38.) 



Represented in the collection by a single specimen, 

 taken August 15 from beneath rubbish near a deep 

 pool in the center of a tamarack marsh, one halt mile 

 south of DeLong, Fulton County. Specimens from 

 Lake and St. Joseph counties are in the Wolcott and 

 Field Museum collections at Chicago. 



B ^punctata Linn, has been taken in Michigan and northern 

 Illinois, and doubtless occurs in the northern third of Indiana. 



Tribe V. NEBRIINI. 

 Species of small or medium size, mostly black in color ; antenna 

 with four-basal joints glabrous; mandibles with bristle-bearing 

 met ur on outer side; elytra margined at base. Presternum pro- 

 Wed behind the cox*, the cavities open behind; tend com touch- 

 | ng 1 52 genera represent the tribe in the United States, two of 

 which occur in Indiana, 



Fig. 38. 

 (After Leng.) 



