O-tO PA-\IILY L. SCAli.VIi.lOIDJ?. 



Tribe V. AGANTHOCERINI. 

 To this tribe belong three small, oval, convex, smooth, shining 

 beetles, living under bark and in rotten wood. They have the man- 

 dibles and labrum of horn-like texture and prominent ; the antenna' 

 10-jointed, club 3-jointed; front coxa' conical, prominent; middle 

 eoxjE transverse, contiguous ; ventral segments five, loosely united ; 

 pygidiiun entirely covered by the elytra; tarsi with slender claws 

 without a process between them. One of the two genera compris- 

 ing the tribe is represented in Indiana. No papers treating of the 

 tribe as such have been published, tlio descriptions of the species 

 being isolated. 



XVI. Clieotus Germ. 1843. (Gr., "girdled.") 



This genus contains t\\-o small species having the middle and 

 hind tibiae thick ; body partially contractile, so that it may be rolled 

 up into a somewhat hemispherical ma«s, much in the same manner 

 as in the members of the genus Agatlvidinm of the Silphidse. The 

 scutellum is large, triangular and attenuate behind and the elytra 

 are not striate. 



1775 (5608). Clceotus aphodioides 111., Germ. Zeitseli., IV, 1805, !?<'. 

 Short, ov!il or siibglobose. Blackish or puriiliph-br.mzecl. polisbecl. Cl.v- 



peus rounded in front, finely and sparsely punctate. Thorax: about twice 

 as broad as long, sides nearly straight ; hind angles rectangular, disk finely 

 and sparsely punctured and with two impressions eacli side near the mar- 

 gins. Elytra with the side margins entire, surface with rows of long, 

 deeply impressed, rather close punctures, and with three or four elevated 

 lines on apical third, the outer one longer. Length 4-4.5 mm. 



Southern half of State; frequent. April 9-Nov ember 22. Oc- 

 curs beneath bark, especially that of oak and hickory. Easily dis- 

 tinguished from the next species by its smaller size and the more 

 closely placed punctures and entire side margins of elytra. 



1776 (5609). Clceotuk olobosus Say, Best. Journ. Nat. Hist, I, 1S;!5, 179; 



ibid. II, 653. 

 Form and color of the iirccciling but slightly hujicr. Clypcus finely 

 rugose. Thorax much more densely punctate. Elytra witli I lie side mar- 

 gins finely denticulate; the punctures obhaiLC. separated from each other by 

 a distance about e(iual to their length; apical half with four or five slightly 

 elevated lines, the two cmier ones extending toward the humerus. Lcngtli 

 5-5.5 mm. 



Throughotit the State; scarce. xMarch 'iO-Novemlier 30. Prob- 

 ably hibernates as imago. The specimens taken ou November 30 



