18-4 long's second expedition. 



interstitial lines convex ; thighs dull-yellowish ; posterior ones 

 much dilated. 



Length more than three-twentieths of an inch. 



Readily distinguished by the rough appearance of the clypeus. 



[Probably an Aegialia. — Lec] 



TROX Fabr. 



T. CANALicuLATUS. — Thorax with entire groove; clypeal edge 

 not reflected ; elytra with alternate series of large and small ele- 

 vated bristly dots. 



Inhabits North-west Territory. 



Body blackish-brown ; head with numerous irregular discoiclal 

 punctures ; clypeus obtusely rounded at tip ; the edge not re- 

 flected ; surface flat, excepting two little elevated protuberances on 

 the upper part of the front; antennae yellow; thorax with a strongly 

 impressed obvious [279] definite groove, the bounding lines of 

 which are uninterrupted, and are equally elevated in every part; 

 an obtuse slightly elevated line passes across the groove near its 

 middle ; between the elevated line of the groove and the lateral 

 edge is a slightly elevated very obtuse space ; basal edge sinuated, 

 over the scutel obtusely rounded ; basal angles extended a little 

 backwards and rounded at tip ; elytra with four elevated lines 

 on which are oval fascicles of yellowish short bristles; interstitial 

 spaces each with a series of small rounded points, also furnished 

 with bristles. 



Length seven-twentieths of an inch. 



It is about equal in size to the T. capillaris nobis, but is alto- 

 gether destitute of the fine capillary lines which ornament the 

 elytra of that insect. 



TENEBRIO Linn. Latr. 



T. reticulatus. — Black ; elytra rugose with impressed spots 

 which have elevated centres. 



Inhabits St. Peter's river. 



Body deep black ; head with numerous small and regular 

 punctures, more dense before and on the labrum ; antennas, third 

 joint but little longer than the fourth; thorax with numerous 

 regular punctures ; narrow, a little contracted before and very 

 slightly contracted behind ; lateral edge longitudinally a little ar- 



