THE GROUND BEETLES. 51 



KEY TO INDIANA GENEEA OF NEBKIINI. 



«. Size small, not over o mm.; front tibiae very obliquely truncate, the 



inner spur above the apex ; vertex sulcate. VII. Notiophilis. 



aa. Size medium, S or more mm. ; front tibiae not obliquely truncate, spurs 



terminal ; vertex not sulcate. VIII. Nebria. 



VIII. NoTiOPHiLi's Diim. 1806. (Gr., " spring + loving.") 



Small oblong black or bronzed beetles, having, the head hori- 

 zontal, triangular, striate, and as broad as or broader than the 

 thorax; eyes prominent; elytra with sides almost parallel, but 

 little broader than thorax. They occur beneath leaves along the 

 margins of open woods and cultivated fields, and in early spring 

 are frequent about the bases of trees and stumps and the sides of 

 logs. Eleven species are known from the United States, three of 

 which have been taken in Indiana. Our species belong to the group 

 having the front 5-striate. 



The latest and best paper on the genus is that of : 

 Fail, H. C. — "A Review of of the North American Species of 

 Notiophilus" in Psyche, XIII, 1906, 79-92. 



KEY TO INDIAXA SPECIE.S OF NOTIOPHILUS. 



(I. Leg:5 and antemiie entirely pale reildish-brown ; head much wider than 

 thorax, the sides of the latter deeply sinuate behind the middle. 



41. ^NEUS. 



(Id. Le.ns dark, n- with the tibiae alone paler; antennre pale at base only. 

 h. Elytra each with one apical amiulate puncture; second elytrul in- 

 ters|)aee equal to two intervals in width ; size larger, form stouter. 



42. SEMISTEIATUS. 



66. Elytra each with two apical annulate punctures ; second elytral 

 interspace broader, equal to three intervals in width ; size smaller, 

 more slender. 4.3. novemsteiatus. 



41 (173). Notiophilus ^neus Hbst, Col., X, 180C, :i35. 

 Metallic bronze, shining. Thorax coarsely punctured near 



l)ase and apex, disk smooth; hind angles acute, prominent. Punc- 

 tures of elytral strias deep at base, becoming indistinct behind 

 the middle; the second elytral interspace as in sninstriattis. F's-^s. 



„ ^ (AfterLeng.) 



Length 5 mm. (Fig. 39.) 



Lalce, "^'iyo and Posey counties; scarce. IMay 18-June 18. 



42 (177). XoTiopnii.TS semistriatus Say, Trans. Amer. Tliil. Soc, II, 



1S2:;, SI; iliid. II, 497. 



Kather stunt. Klackish or iinr]ilis]i-liniuzc, sirciiuiy shinint;; tibia' 



and I'lui- b.-is.-U joints of antenr.;c usually lialc. Tonniual .iuint uf palpi 



dilated and truncate. Thorax coarsely punctate at sides, apex and base, 



tlie disk smooth ; sides strongly sinuate behind the middle. Elytral striae 



