THE DARKLING BEETLES. 1253 



HoW (7444). BLAPSTINTS INTERUI rns S;iy. ."Jonrn. I'liil. Acad. Nat. Sci., 



III. 1824. LV.4; ibid. II. 155. 



Oblong, rather robust and convex. Black, finely alutaceous; elytra pic- 

 eon*, obscurely linked with bronze. Thorax three-fourths wider than long; 

 sides straight to near apex, then converging to the apical angles; apex 

 broadly emarginate, hind angles acute; surface rather densely and coarsely 

 punctured, the basal fove;e well marked. Elytra together about one-half 

 longer than wide; stria 3 feebly impressed, very finely and closely punctured. 

 the rows more or less interrupted; intervals sparsely and rather coarsely 

 punctured. Length 4.5-5 mm. 



Throughout the state ; scarce. April 23-May 29. Several speci- 

 mens were taken from a dead hen and others from cement side- 

 walks and beneath rubbish, usually in sandy localities. Broader 

 and more oblong than the next. 



2317 (7445). BLAPSTINUS METAI.LKTS Fabr.. Syst. Eleut.. I, 1S01. 143. 



Oblong-oval, convex. Bronzed, rather strongly shining. Thorax as in 

 inlcn-ui>im, except that the disk is more finely and sparsely punctate at 

 middle. Elytra 1 punctures coarse and widely interrupted in sets of one to 

 four or five, thus causing the surface to appear rugose; intervals flat, 

 sparsely and very finely punctate. Length 4-4. S mm. 



Lake, Marion and Vigo counties; frequent. March 26-October 

 1. Occurs with -nia'stus and probably hibernates. Often attracted 

 by light. 



Tribe III. ULOMINI. 



Elongate or oval, usually somewhat depressed species having the 

 head immersed in thorax to eyes, which are transverse and emargi- 

 nate; front dilated to cover the base of mandibles; antenna? 11- 

 jointed, the outer joints more or less thickened : middle coxiv with- 

 out trochantin, hind coxa? slightly separated: tarsi pubescent be- 

 neath, the last joint much elongated. They live under bark, in 

 fungi or in dried vegetable products. Representatives of but five 

 of the 16 genera have been taken in the State, though those of three 

 others perhaps occur. 



KEY TO INDIANA GENERA Ol- II.OMIM. 



ii. Antenn:e with the last two or three joints suddenly broader (except in 



Triboli ii in coufiisiiDi) ; length less than 5 mm. 

 It. Club of antenn:e rt-jointed : epipleura very narrow at tip. 



X. TBIBOLIUM. 



lib. Club of aiitenn;e li- jointed ; epipleura distinct at tip. XI. DICEDUS. 

 an. Antennal joints gradually broader to lip. 



c. Base of thorax not margined, the hind anirles never covering the hu- 

 meral angles of elytra. 

 (/. Last joint of maxillary palpi oval ; length less than 4 mm. 



