50 



F AM I L Y 1 r. C A R A 151 D.T^. 



(*(>nini(iii Mloiig streams and niarg'iiis of ponds and lakes through- 

 out the State. April 3-Deceuiber 25. One speeinien from Putnam 

 County was taken on the latter date, indicating that the species 

 probably hibernates in the imago stage. 



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



Resembling Elaplints but much larger, with proportionally nar- 

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

 mer with a, deep groove each side ; last joint of maxillary palpi- 

 short. They live during summer near rain pools or small bodies of 

 water. One of the four species known from the United States has 

 been taken in Indiana, while another jierhaps occurs. 



KEY TO INDIANA SPECIES OF BLETHISA. 



(/. Thorax quadrate, smooth above and beneath except iu the basal im- 

 pressions ; lengtli 15 mm. quadricollis. 

 (/(/. Thorax snbcordate. finely and densely punctate beneath ; length 12 mm. 



MULTIPUNCTATA . 



40 (1G4). Bletitisa quadricollis Ilald., Proe. I'hil. Acad. 

 Nat. Sei., Ill, 1847, 140. 

 Blackish or copper^' bronze above; black beneath. Thorax 

 ipiadrate, sides feebly curved, margins strongly rellexed. 

 basal impressions sparsely punctate, hind angles obtusely 

 rdunded. Elytra striate, iiunetured. each with about ten 

 luvea^ arranged in three r^ws. Length l.j mm. (Fig. ;'.8. ) 



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 half mile 

 south of DeLong, Fulton County. Specimens from 

 Lake and St. Joseph counties are in the Wolcott and 

 Field Museum collections at Chicago. 



B. muUijyuncidta Linn, has been taken in Michigan and northern 

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



Tribe V. NKl'.RIIiNJ. 



Species ol" small <tc inediiim size, mostly black in color; anteniiEe 

 with four basal Joints glabrous; mandibles Avith bristle-bearing 

 puncture on outiM- side; elytra margined at base. Prosternum pro- 

 longed bcbiiid the coxa', the ca\'ities open behind ; hind coxa' touch- 

 itig. Five genera repi-csent the frilie in the ITnjted States, two of 

 which occur in Indiana. 



