152 FAMILY IT. CARABID^. 



piceous; antemue piceous. paler at base. Thorax a little lunger than wide, 

 widest slightly in front of middle ; margin very narrow, hind angles obtuse ; 

 disk transversely wrinkled, a few punctures near apex. Elytra oblong, 

 gradually broader behind; the stri;e tine, punctate; intervals flat, sparsely 

 punctate. Length 7-7.5 mm. 



Northern half of State, frequent; Dubois county only in the 

 south. May 14-October 10. Often found on flowers. One of our 

 most handsome Carabids. 



C. purpitrea Say, 7.5-9 mm. in length, ranges from Michigan to 

 Georgia. Missouri and Kansas, but has not yet been noted in In- 

 diana. 



XL VIII. PLOCHIONUS Dej. 1825. (Gr., "a lock of hair.") 



This genus is very close to Callida, being separated by the char- 

 acters given in key, and by the lignla having four setae instead of 

 two, as in Callida. One species occurs in Indiana. 



200 (931). I'r.oc IIIONIS TIMIDUS Ilald.. Proc. Phil. Acad. Nat. Sci., I, 1842, 



298. 



Rather broad, depressed. Uniform dark brown, the margin of thorax 

 and elytra translucent. Thorax broader than long, sides strongly rounded, 

 base wider than apex; margin broad, hind angles rectangular; disk trans- 

 versely wrinkled, median line distinct. Elytral stria? deep, not punctured; 

 intervals convex, alutaceous. Males with the front tarsi narrowly dilated, 

 the first three joints with two rows of small scales beneath. Length 

 7-7.5 mm. 



Marion County ; scarce. March 16-November 17. Probably hi- 

 bernates. Occurs in damp places beneath bark and rubbish. 



XLIX. PINACODERA Schaum. I860. (Gr.. "flat + neck.") 



Oblong, brown or piceous beetles of rather small size, having 

 the tarsi smooth above, the middle pair in male dilated. Hind 

 angles of thorax in our species obtuse, not prominent ; inner wings 

 well developed. Two species have been taken in Indiana. 



KEY TO INDIANA SPECIES OF PINACODERA. 



n. Elytra with pale humeral spot; thorax distinctly narrowed behind, its 

 margin broad and translucent. 270. LIMBATA. 



n a. Elytra without pale spot at humerus ; thorax very little narrowed be- 

 hind, the margin narrow, scarcely translucent. 271. PLATICOLLIS. 



270 (934). PINACOUERA LTMBATA De.i.. Spec. V, 1829, 320. 



Rather slender, depressed. lark brown or piceous; antemue, legs, 

 margin of thorax, humeral spol and sides of elytra paler. Head slightly 

 wrinkled above the eyes. Thorax one-third wider than long, sides mod- 



