THE CAEEION BEETLES. 279 



antenna are as long as the head and thorax, the last five joints form- 

 ing an elongate elnb, the eighth shorter and narrower than the sev- 

 enth and ninth. Five species are known from Indiana. 



KEY TO INDIANA SPECIES OF CHOLEVA. 



a. Hind angles of thorax rounded or obtuse. 



6. Form elongate-oblong, but little narrowed behind; nearly uniform 

 dark brown ; cave inhabiting species. 544. alsiosa. 



66. Form oval or oblong-oval, distinctly narrowed behind; terrestrial 

 species. 



c. Front femora more or less flat on the under edge, usually glabrous 

 and with a tubercle in the male ; female with ventral segments 

 not foveate at middle. S45. simplex. 



CO. Front femora with the lower edge rounded, punctate and without 

 trace of tubercle in male. 

 d. Form oblong; body distinctly contracted at base of elytra; fe- 

 male with ventral segments 5-6 deeply longitudinally im- 

 pressed at middle. 546. basillaris. 

 dd. Form oval, margins of thorax and elytra nearly continuous ; fe- 

 male with ventral segments 5-6 vaguely impressed. 



547. CLAVICOENIS. 



aa. Hind angles of thorax rectangular, the thoracic and elytral margins 

 continuous ; female with abdomen not imijressed. 548. tebminans. 



544 (1727). Choleva alsiosa Horn, Trans. Amer. Ent. Soc, XII, 1885, 



136. 

 Elongate-oblong, rather slender, finely pubescent. Dark smoky or sooty 

 brown. Antennre rather slender, longer than head and thorax, piceous, the 

 two basal joints paler. Thorax less than twice as wide as long, narrower 

 in front ; hind angles rather obtuse, disk densely and finely punctured. 

 Elytra elongate-oval, as wide as thorax at base, rather densely punctate, 

 the punctures coarser than on thorax. Length 4.3 mm. 



One specimen from Coon's Cave, Monroe County, July 10. 

 Taken from beneath a stone 400 feet from the entrance; also re- 

 corded from Mayfield's Cave, Monroe County, by Banta. Described 

 from Alaska, but since taken by Garman in caves near Lexington, 

 Kentuclry. 



545 (1728). Choleva simplex Say, Journ. Phil. Acad. Nat. Sci., V, 1825, 



184 ; ibid. II, 289. 

 Oval, slightly oblong, pubescent. Head and thorax piceous, elytra pur- 

 plish-brown ; antennae piceous, two basal joints paler. Thorax one-half 

 wider than long, a little narrower in front, surface finely and densely punc- 

 tate ; elytra scarcely wider than thorax, narrowed behind, not striate, rather 

 densely punctate. Length 3.5-4 mm. 



Clark and Posey counties ; scarce. May 7-May 15. 



