THE SHORT- WTXGED SCAVENGER BEETLES. 4/7 



Tcvalex rribatulus Casey. 2.7 mm. in length and pale uniform 

 brownish-yellow thnughout, was desc-ribed from Pennsylvania. 



LXXX. AciDOTA Steph. 18:^1. (Gr., "sharp.") 



Small elongate, sabconvex species having the fourth joint of 

 maxillary palpi scarcely longer than third ; mandibles without 

 teeth; elytra reaching middle of abdomen, their outer apical angle 

 rounded. One species has been taken in the State, while another 

 may occur. 



KEY TO I^DIAXA SPECIES OF ACIDOTA. 



a. Klytral punctures coarse, arrauged in regular rows ; length 0-7 mm. 



CEENATA. 



aa. Elytral punctures finer, more or less Irregularly placed ; length 4.5- 

 5 mm. 020. subcakinata. 



A. crriiata Fab., piceons or dark chestnut-brown, antennae and 

 legs paler, occurs in Canada and at Detroit, and probably in the 

 northern counties of Indiana. 



920 (280C). Acidota sujscarixata Erichs., fJcn. Spec. Staph., 1S40. m?<. 



Elongiite, snbdepressed. Dark reddish or chestnut bnjwn, shining; 

 head, thorax and dors.-il segments of alidomen often mure or less fnsccms. 

 Thorax sulniuadrate, a little Imiader than long; sides feebly curved, de- 

 pressed near hind angles, which are obtuse; disk rather coarsely, deeply 

 and sparsely punctate. Elytra at base scarcely wider than thorax, the 

 punctures fine. dee]i and arrangcil in irre.^'ular double rows with fine raised 

 lines between, .\bdomen as wide as elytra, finely and sparsely punctate. 

 Length 4.5-5 mm. 



ilartin and Pose,^' counties; rare. April 21-iIay 6. Beaten 

 from apple blossoms. 



LXXXI. Arpedium Erichs. 1838. (Gr., "flat.") 



Oblong, subdepressed brovsTiish or piceous species having the 

 antennae filiform, longer than head and thorax; right mandible 

 toothed at middle; elytra reaching usually tn or beyond middle of 

 abdomen. Two species have been taken in the State and two others 

 may occur. 



KEY TO INDIA,\A SPECIES OF ARPEDIUlt. 



(I. Thorax and elytra distinctly punctate. 



6. Winged species; elytra long, not obliquely truncate at tips. 

 e. Disk of thorax even, densely and rather finely punctate. 



!)21. cKrBATr>r. 

 cc. Disk of thcjrax uneven, widely and deeply impressed each side. 



922. scHWABzri. 



