190 FAMILY II. OAKABTD^E. 



o5t; (114G). Stenolophls dissimilis Dej., Spec. IV, 1824, 424. 



Resembles the pi-eeeding. Readily distinguished by the blaclv head, 

 yellow thorax and black and yellow elytra. Thorax with narrower margin 

 and more rounded hind angles. Length G-7 mm. 



Posey County; rare. November 8. 



LXX. Acu'PALPrs Latr, {(Tr.; "slender + palpus. ") 



Very small (;l)l()ng black or piceotis beetles, distinguished from 

 titenolophus, with whicli they were formerly grouped, by the char- 

 acters given in generic key. The last joint of the labial palpi is 

 rather stoutly oval, but slender at lij). Avlience the generic name. 

 For literature see : 



LeConie.—In Proc. Phil. Acad Nat. S.-i.. 1868. 377-378. 



Horn.— In Bull, Brook. Entoiii. Soc. VI. 1883. 15. 



Two of the five known species have been taken in Indiana. They 

 have but one dorsal puncture, as usual, on the second stria; hind 

 angles of thorax obtuse, somewhat r^undiHl; frontal suture more 

 distinct than in the other forms. 



KEY TO INDIANA SPECIES OF AC I PA I. PIS. 



rt. Head brownish, scarcely narmwer than thorax and almost as long; e.ves 



small; elytra oval. .".57. hydropicus. 



(tit. Head black or piceous, distinctly narrower than thorax; eyes larger, 



more i)rorainent ; elytra oblong-oval, iridescent. ;>58. carus. 



357 (]]4t)). AcuPALPUs iiydroptcis Tvec, N. Spec. N. Amor. Col.. T. 1863, 17. 

 Oblong-oval, convex. ll(>a(l .-ukI lhor;ix dnrk brown, strongly shining; 

 elytra i>iceons. the suture and iimitow mnrgins |)al('r: antenna' and legs dull 

 .vellow. Thorax trapezoidal, a little broader than long, narrowed l)ehind. 

 rounded on the sides only before the middle; basal impressions broad, dis- 

 tinct, sparsely punctured. Elytral stria^ rather deep; intervals subcouvex. 

 Length 3 nun. 



Starke and Alarshall counties; scarce. ]May 20-.Tune 16. 



35S (1150). AciPM.prs caiscs Lee. X. Spec. X. Amer. Col.. I, bS<)3, 18. 



Elongate-oval, subcouvex. Thorax either duslcy yellow or piceous; ely- 

 tra piceous, iridescent; antenna' dusky, the basal .ioints and legs pale. 

 Thorax subquadrate. a little brojuler than long; sides feebly curved from 

 apex to base; hind angles rounded; basal impressions rather deep, obso- 

 letel.v punctate. Elytral striiTR fine; intervals flat. Length 2.5-3 mm. 



'i'hroughout the State; fiHHjuent. I\Iarch 26-October 17. Oc- 

 curs beneath l)arl\- and stones in damp k)calities. Easily distin- 

 guished i'rom hjidropicu^ hy the narrower head, dusky antenufe and 

 k'ss nan-owed l)ase of thor;i\'. 



