156 ACADEMY OF NATURAL SCIENCES 



in length : thorax rather large ; posterior angles nearly rectan- 

 gular, slightly rounded at tip ; posterior edge not undulated ; 

 elytra with obsolete, hardly obvious punctured strife : beneath 

 piceous, more or less blackish : feet always pale piceous. 

 Length three-twentieths of an inch. 



TENEBRIO Lin. Fab. Latr. 



1. T. BADIUS. — Blackish-brown, oblong-oval, minutely punc- 

 tured, thorax with larger punctures each side ; elytra striate. 



Inhabits the United States. Ohio. 



Trvrhrio hadun Knoch in Melsh. Catal. 



Body black, with a reddish-brown tinge, and very minute dense 

 punctures: head, anterior canthus of the eyes indented; a trans- 

 verse, indented abbreviated line between the antennae : antennae 

 black-brown, terminal joint dull ferruginous : thorax transverse- 

 quadrate ; anterior angles projecting, rounded ; posterior angles 

 acute, rectangular ; lateral edge prominent, arquated : larger 

 punctures [266] each side near the posterior angles : elytra with 

 indented punctures striae ; interstitial lines convex, with numer- 

 ous very minute punctures : beneath dark reddish-brown. 



Var. a. Reddish-brown. 



Length nine-twentieths of an inch. 



It is not unfrequently found in various parts of the country. 



[A true Tcnehrio, but previously described by Beauvois as 

 Helops tenehrioides. — Leg. 



2. T. INTERSTITIALIS. — Blackish-brown, elongated ; thorax 

 with an indented spot behind, and somewhat dilated lateral 

 margin. 



Inhabits the United States. Ohio. 



Tenehrio depresms Melsh. Catal. 



Body blackish-brown, elongated, punctured ; punctures rather 

 large, confluent : head, lateral margin reflected : thorax quadrate, 

 with an indented spot behind the middle ; anterior angles promi- 

 nent, rounded at tip ; lateral margin slightly reflected ; lateral 

 edge very slightly arquated ; posterior angles acute : scutel 

 rounded at tip : elytra with indented stria3, in which are dilated 

 punctures ; interstitial lines narrow and with a few minute 

 tubercles. 



Length seven-twentieths of an inch. 



[Vol. III. 



