:{04 FAMILY XI. — STAriIYLTNID.T5. 



7(!l' t'22't'2). AcTOBirs jocosrs Florn. Trans. Amer. Ent. Soc. XI, 1884, 

 232. 

 Elongate, slender. i)nrallel. Color of preceding except that the elytra 

 are wholly black, and the antennae brown, paler at base. Thorax oblong, 

 slightly narrowed behind, sides almost sti*aight, punctate as in pcederoides ; 

 elytra much longer and more coarsely punctured than there, one-half longer 

 than wide. Length 4.5 mm. 



Lake County ; rare. June 15. Talcon from beneath the prickly- 

 pear cactus. 



A. imitil'is Horn, 3.5-4 mm.; A. patella Horn. 5 ram.; A. termi- 

 )ialis Lee. 4.5 mm., and A. umhripennis Lee, 8.5 mm. in length; 

 all have a known range which might include Indiana in their dis- 

 tribution, but no one of them has as yet been noted within the State. 



Trli>e III. XANTHOLININI. 



V^ei'v slender, small or medium-sized species, having the head 

 usually equal in width to thorax and narroAved behind into a small 

 neck; antenna^ ell)ow(Hl. inserted close together near the middle of 

 the front margin of the front; thorax long and rectangular with 

 rows of punctures of which the outer ones are curved, its side mar- 

 gins double and thoracic spiracles visible. Of the seven genera 

 comprising the tribe, four are represented in Indiana. 



KEY TO INDIANA GENERA OF XANTHOLININI. 



(/. .Xiilciuia' strongly elbowed; edges of elytra overlapping at suliu'c; mid- 

 dle coxjp widely separated. 

 I). Last joint of maxillary i)alpi long, not awl-shaped. 



XXXVII. Xantholinus. 

 hb. Last joint of maxillary i)alpi short, awl-shaped. 



c. Fronl tarsi broadly dilated; head densely strigose-punctate. 



XXXVIII. Leptolinis. 



cc. Front tarsi not dilated. XXXIX. Leptacinus. 



iKi. .Vntenna' feebly elbowed; elytra not overlai)|)iiig at suture, the sutural 



stria deep; thorax narrowed in front. XL. Diochus. 



XXW'll. Xaxtiiolint^s Serv. TS25. (Or., "yellow.") 



'i'his genus. suCficicntly chai'actcrizcd ab(<V('. is fc^pi'csented in the 

 State by nine known species, while one othei- ina_\' occur. 



KEY ro INDIANA SPKCIES OK XANTHOMNUS. 



(/. Ijiper (outci-) marginal line of thorax IxmU. downward :uid united with 



the lower one al middle: timrax with dorsal rows of five or six fine 



punctures. 7(J3. cephalus. 



'III. I'lij-er maririiiai line of (hoi-ax separat(> from the lower one nearly to 



apex, not heiil ijow iiw ai'd in iront. 



