THE SHOET- WINGED SCAVENGER BEETLES. 



Fenyes. — "A Preliminary Systematic arrangement of the Aleo- 

 charinse of the United States and Canada," in Entom. News. 

 XIX, 1908, 56-65. 

 The work of Director L. Ganglbauer has been the one principally 

 drawn npon for the present classification of the subfamily. 



KEY TO THE INDIANA TRIBES OF ALEOCHARINiE. 



a. Head prolonged in a beak in front ; inner lobe of the maxilla? entirely 

 corneous or horn-like, its inner side with teeth or spines. 

 &. All the tarsi with three joints. Tribe I. Dinopsini, p. 337. 



&&. Front and middle tarsi with four, hind tarsi with five joints. 



Tribe II. Myll^nini, p. 338. 

 aa. Head not prolonged in a beak in front ; inner lobe of the maxillae 

 corneous on the outer side, coriaceous or leather-like on the inner 

 side. 



c. All the tarsi with four joints. 



d. Antenna? with 11 joints. Tribe III. Hygronomini, p. 338. 



dd. Antenna? with ten joints. Tribe IV. Oligotini, p. 339. 



cc. Front and middle tarsi with four, hind tarsi with five joints. 



Tribe V. Bolitocharini, p. 339. 

 ccc. Front tarsi with four, middle and hind tarsi with five joints. 



Tribe VI. Myrmedoniini, p. 344. 

 cccc. All the tarsi with Jive joints. Tribe VII. Aleocharini, p. 360. 



Tribe I. DINOPSINI. 



Head prolonged in a broad and short beak in front. Lobes of 

 the maxillas very long and narrow, the inner lobe entirely horn- 

 like, its inner side with nneqnal teeth on apical half. Maxillary 

 palpi very long and slender, apparently only three-jointed, the 

 fourth joint minute, scarcely visible, aciculate. Labial palpi with 

 the basal joint very large, elongate, the second and third joints 

 small. All the tarsi with three joints. 



The tribe contains only the single genus : 



I. Dinopsis Matth. 1838, (Gr., "wonderful + face.") 



Antenna? slender, head rather large ; thorax transverse, elytra as 

 long as or one-third longer than thorax ; abdomen strongly narrowed 

 behind the middle and with two anal styles. 

 630 ( 2088). Dinopsis Americana Kr., Linn. Ent, XI, 1857, 38. 



Elongate, slender, depressed. Piceous, subopaque, sparsely clothed with 

 very fine short, prostrate pubescence ; antenme, labrum, palpi and tarsi dull 

 yellow. Thorax convex, more than twice as wide as long, sides rounded on 

 apical half, hind angles rectangular ; surface, as well as that of elytra and 

 abdomen, very minutely and densely granulate-punctate. Elytra one- third 

 longer than thorax, the granules arranged in oblique stria?. Length 3 mm. 



Putnam and Franklin counties ; rare. June 11-September 25. 



