AMERICAN PHILOSOPHICAL SOCIETY. 589 



at tip the common cmargination obtuse, not pruluund : feet black- 

 jiiceous. 



Leii;itli one-twentieth of an inch, 



[A Ilomalo/ii, probably the same as Ollgota pediruhtrU Mols. — 

 Lec] 



13. A. MINIMA. — Black ; elytra and feet dull yellowish. 

 Inhabits Indiana. 



IJody black, with numerous jirostrate hairs: antennae towards 

 the base with a very sli;^'ht tinj^e of piceous : elytra dull yellow- 

 ish : tcrgum dirty yellowish at tip : icet whitish yellow, dull. 



Length nearly one-tenth of an inch. 



Var. a. Thorax nearly the color of tlic elytra. 



[Also a lloiudlotn. — l^KC] 



14. A. lUi.OBATA. — l)urk reddish-brown ; thorax subcordatc, 

 canaliculate, feet pale. 



Inhabits Mis.souri and Indiana. 



Body very dark reddish-brown, with numerous regular punc- 

 tures : antennae, two basal joints p:ilcr : mouth beneath, excepting 

 the terminal joints of the maxillary palpi, pale testaceous : thorax 

 rounded before and narrower behind ; very deeply canaliculate ; 

 groove abruptly abl)reviatod on the basal margin : elytra at tip 

 and sides with smaller [157] punctures than the thorax; suture 

 iidcnted : feet pale testaceous : tcrgum, segments with dilated 

 pniictures at base. 



Length less than three-twentieths of an inch. 

 The thoracic canal is less dilated, but at least as profound as 

 that of the cfninfindata Grav.; the thorax is more contracted 

 behind, and the head more prominent, and distinctly separate 

 from the thorax by a short neck. 



The genus Ahochuni, as is obvious to entomologists, needs re- 

 formation. The present species, and some others of Graven- 

 horst's first divisions, may be separated from it under the follow- 

 ing name and characters. 



Genus Akodorus. — Head prominent, with a distinct neck, not 

 inserted into the thorax; antcnn;p inserted into the anterior in- 

 ternal orbit of the eye ; three basal joints longest ; maxillary 



18a6.] 



