THE SHOET-WINGE1) SCAVENGER BEETLES. 405 



tlntrnx. coarsely and densely imnctate and with an almost complete spiral 

 behind Hie middle. Abdomen at base slightly narrower than elytra, very 

 Jeebly tapering to apex, finely and rather sparsely pmietate, the transverse 

 cariiue with three cusps. Length 3.5-4 mm. 



Marion. Vigo, Lawrence. Clark, Floyd and Posey counties; 

 scarce. March 1 -November 2S. Taken by sifting, beneath mul- 

 lein, elc. Resembles fcnioi-ahix in form, size and color, but the 

 sculpture is much more regular. 1hc abdomen less tapering and the 

 median impression of thorax wholly different. 



Division C. 



Here a part or all of the punctures are united or confluent, but 

 the channels which they form are never arranged in a complete 

 spiral or whorl on any part of the elytra. 'The channels or punc- 

 tures may be comparatively distant or very closely compacted, and 

 the interspaces correspondingly wide or acute, convex or flat, highly 

 polished or minutely granulose and feebly shining." The thorax 

 is always marked with a. distinct impression or canaliculation on 

 some part of the middle of the disk. The following species have 

 been taken or probably occur in the State: 



KEY TO INDIANA SPECIES OF DIVISION C. 



a. Larger, more than 2 mm. in length; elytral suture not more than one- 

 third longer than thorax: transverse carhue of abdomen with three 

 cusps. 



It. Form extremely slender, nearly cylindrical; elytra much shorter than 

 thorax, head much wider than elytra: length 3-3.5 mm. 



783. STRANUl'LATl'S. 



hit. Form much more robust; elytra at most but little shorter than thorax, 



usually longer. 



iL Larger, 3.7-4.8 mm. : head wide and robust, as broad as or broader 

 than elytra: males (except in nctjlcctm) with the side margins 

 of the impressed area of fifth ventral segment in the form of 

 ridges which terminate behind in acute teeth. 



c. Legs black: length 3.7-4 mm. INTRCSI s. 



cc. Legs piceous or paler. 



/'. Head not twice as wide as long, deeply excavate between the 

 eyes; legs pale piceous-brown : length 4-4.8 mm. 



784. ERYTiiRorrs. 



//. Head twice as wide as long, feebly excavate between the eyes: 



legs piceous; length 3.S-4 mm. NEGLECTI s. 



'hi. Smaller, net over 3.. r > mm.: males with margins of impressed area 



of fifth ventral without ridges or teeth. 



!>. Elytral suture equal in length to thorax, the latter wider before 

 the middle: form slender: length !'.." mm. srirnus. 



