190 FAMILY II. — CAEABIDJE. 



356 (1146). Stexolophtts dissimilis Dej., Spec. IV, 1824, 424. 

 Resembles the preceding. Readily distinguished by the black head. 



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

 and more rounded hind angles. Length "6-7 mm. 



Posey County; rare. Xovereber 8. 



LXX. AcuPALPus Latr, (C-rr.. "slender -f palpus.") 



Very small oblong black or piceous beetles, distin^ished from 

 Stowlophus, mth ^vhicli they were formerly grouped, by the char- 

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

 rather stoutly oval, but slender at tip. whence the generic name. 

 For literature see: 



LeConte.—In Proc. Phil. Acad. Nat. Soi., 186S. 377-378. 



Horn.— In Bull, Brook. Bntom. Soc, VI, lt;83. 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 rounded; frontal suture more 

 distract than in the other forms. 



KET TO ixdia:sa SPECIES OF Acrp.s.urs.- 



a. Head brownish, scarcely narrower than thorax and almost as long; eyes 



small ; elytra oval. 357. htbbopicus. 



«a. Head black or piceous, distinctly narrower than thorax; eyes larger, 



more prominent ; elytra oblong-oval, iridescent. 358. caeus. 



357 (1149). AcuPAU-rs htdbopicus Lee, X. Spec. X. Amer. Col., 1, 1S03. 17. 

 Oblong-oval, convex. Head and thorax dark brown, strongly shining; 



elytra piceous. the suture and narrow margins paler ; anteunse and legs dull 

 yellow. Thorax trapezoidal, a little broader than long, narrowed behind, 

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

 tinct, sparsely punctured. Elytral striie rather deep ; intervals subconvex. 

 Length 3 mm. 



i^tarke and .Marshall counties: scarce. ^lay 2ri-.June 16. 



o5S tll50). Acup.\LPUS CASUS Lee, X. Sihh^ X. Amer. Col.. I. lsG3. IS. 



Elongate-oval, subconvex. Thorax either dusky yellow or piceous ; ely- 

 tra piceous. iridescent; antennre dusky, the bnsal joints and legs pale. 

 Thorax subquadrate, a little broader than long; sides feebly curved from 

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

 letely punctate. Elytral striae flue; intervals flat. Length 2.5^-3 mm. 



Throughout the State: frequent. IMarch 2(i-nctober 17. Oc- 

 curs beneath bark and stones in damp localities. Easily distin- 

 guished from hjjdropicvs bj' the narrower head, duslv^- antennae and 

 less narrowed base of thorax. 



