186 FAMILY II. CABAJiUVK. 



tra. hind angles rectangular; basal impressions distinct, rather broad, finely 

 and sparsely punctured. Elytra 1 stride very fine; intervals flat, minutely 

 alutaceous. Length 12-15 ruin. 



Franklin, Monroe and Vigo counties; scarce. May 8-December 

 18.* Readily known by the black legs and broad head. Occurs in 

 sandy upland woods. 



:!46 (llOa). HARPALUS VIDUUS Lee., Proc. Phil. Acad. Nat. Sci., 1865, 103. 



Oblong-oval. Black or piceous, shining ; antennae and tarsi dark red- 

 dish-brown. Resembles laticeps, but the head is not quite so broad, the 

 hind angles of thorax are more rounded and the basal impressions more 

 narrow and deeper. Length 13 mm. 



Known from Indiana by two specimens taken in Vigo and Parke 

 counties. May 13-May 24. Described from Rock Island, Illinois. 



H. gravis Lee., 9 mm. in length, was described from Texas and 

 has been recorded by Dury from Cincinnati. 



LXVIII. SELENOPHORUS Dej. 1826. (G-r., "moon or light + bear- 

 ing.") 



Small oblong or oval, black or piceous beetles, closely resembling 

 the smaller forms of Harixilux but differing by having three rows 

 of dorsal punctures, situated on the second, fifth and seventh elytral 

 stria?. The males have the front and middle tarsi moderately di- 

 lated, with two rows of scale-like papilla? on the first four joints. 

 They occur, for the most part, in sandy or dry localities. Four 

 species have been taken in Indiana, while one other perhaps occurs. 

 The literature treating of the genus is as follows : 



Horn. -"Critical Notes on the Species of Selenophorus of the 



United States," in Proc. Amer. Phil. Soc., XIX, 1880, 178. 

 For??. "Synoptic Table," in Bull. Brook. Ent. Soc., V, 1882, 8. 



KEY TO INDIANA SPECIES OF SELENOPHORUS. 



*/. 1'rosternum obtuse at tip, not margined. 



l>. Upper surface with a bronzed lustre ; elytral punctures very small, 

 the intervals smooth ; length 5-0.5 nun. 347. PEDICULARIUS. 



l>b. Upper surface black, more or less iridescent, 

 c. Thorax as wide or wider at base than apex. 



d. Outer interval not punctulate; length 7.5 mm. 348. GAGATINUS. 

 dd. Outer interval of elytra finely puuctulate; length 9-10 mm. 



349. OPALINUS. 



cc. Thorax distinctly narrowed at base, hind angles obtuse; marginal 

 interval punctulate; length 6.5 mm. IBIPENNIS. 



aa. Prosternum horizontal, tip slightly prolonged and margined; thorax 

 broader at base than apex, its sides nearly regularly curved. 



350. ELLIPTICUS. 



* The H. montanus of my paper, "The Winter Insects of Vigo County, Indiana," Psyche, Feb., 1896 339. 



