18 Mr. F. P. Pascoe's Descriptions of New Genera, 



Didymocantha cylindricollis. 

 D. angusta, brunnea, hirtis fulvidis vestita ; prothorace cylin- 



drico, antice constricto. 

 Australia (Moreton Bay). 



Narrow, reddish-brown, ratlier sparingly clothed with coarse 

 stiff fidvous hairs, more densely on the scutellum ; prothorax 

 long, cylindrical, but suddenly contracted anteriorly ; palpi and 

 mandibles pitchy. 

 Length C lines. 



Trichomesia. 



Head rather narrow and elongate anteriorly ; mandibles short ; 

 labrum small ; eyes slightly emarginate ; palpi with the terminal 

 joint oblong-ovate, obtuse ; antennae distant, robust, not longer 

 than the body, the joints (second except) subequal ; thorax 

 convex, equal in length and breadth, narrower before ; elytra 

 rather depressed ; legs short. 



A genus which 1 think should be placed near Uracanthus. Mr. 

 Newman, to whom I have dedicated it, informs me that in his MS. 

 it bears the name of CalUdiiim digramma. 



Trichomesia Nervmani. 

 T. nigra ; elytris, palpis, pedibusque castaneis, illis linea albo- 



hirsutd versus suturam ornatis. 

 Australia (Victoria). 



Dull black ; prothorax with a line of whitish hairs on each 

 side, and another beneath it, which is continuous with one on the 

 mesosternum ; elytra, palpi and legs pale chesnut, the former with 

 a broad stripe of whitish hairs on each, extending from the base to 

 near the apex, and parallel to but, not touching the suture, which is 

 dark brown ; under surface paler with whitish hairs, which are 

 more dense on the sides of the abdominal segments. 



Length 5 lines. 



Sebasmia. 



Head porrect, small ; eyes large, reniform ; antennae of mode- 

 rate length, the basal joints nodulose, the fourth shortest (second 

 excepted), the terminal notched ; prothorax rugose, elongated, 

 narrowed anteriorly ; elytra rather large ; legs short. 



Closely allied to Ceramhyx, from which it differs principally in 

 habit, comparatively large elytra, and short feet, particularly of 

 the tibiae. The palpi were absent in the only specimen I have 

 seen , 



