Trirhoptcri/x.'] CLAvicOKNiA. 123 



shining, black, clothed with very short yellow piihoscenf^o ; liead viitlier 

 small, eyes large, prominent, antennix; moderate, rather stout, pitchy- 

 Llaek ; thorax short, broadest at middle, with small tubercles arranged 

 in thick strongly sinuate rows, interspaces shining, deeply reticulate, 

 posterior margin almost straight, angles scarcely produced ; scutellum 

 large ; elytra oblong, very convex, with the sides almost parallel, thickly, 

 but not deeply, asperate ; legs yellow. L. |-1 mm. 



In liot-beds, vegetable refuse, &c. ; nire, but probably mucli more widely dis- 

 tributed thuu is at pi-eseiit known j 'J'onbi idge ; Guniley, L' icestcrsliire ; Kiiowle ; 

 liepton ; Lincoln ; in both the latter places I have taken it in the liot-bed in my 

 garden ; Mr. Champion has also found it in Scotland. 



This species is allied to T. jnctconii.s, but ditfers in its shorter and 

 narrower thorax, longer and more slender antenme, and closer and hner 

 sculpture. 



T. picicornis, Jlannh. Oblong, convex, black, rather sparingly 

 clothed with yellowish hairs; head laigo, antennaj moderate, pitchy- 

 black, with the eighth joint somewhat incrassate ; thorax scarcely dilated 

 behind, with sides rounded and margined, furnished Avith moderate 

 tubercles arranged in thick, interrupted, rows, interspaces deeply reticulate, 

 posterior aiigles moderately ]»roduced ; scutellum rather small ; elytra 

 quadrate, slightly broader behind, Avitli sides almost parallel, moderately 

 strongly asperate ; abdomen rather much exserted, apical segment tri- 

 dentate; legs rather stout, obscurely yellow; basal joints of all the 

 tarsi slightly dilated ; under-side black, mouth and coxae lighter. 

 L. f mm. 



In rotten wood ; rare; Hastings; Knowle ; Gundey ; Sherwood Forest ; Norlbum- 

 bcrland district, six specimens (Bold; ; Scotland, Forth and Tay districts (Avie- 

 more, &e.). 



T. carbonaria, Matth. This species is allied to T. picicornis, but 

 differs from that species in its paler and more slender antennae, of which 

 the eighth joint is linear and not incraspate, and in the different sculpture 

 of the thorax and elytra, the tubercles on the former being smaller, and 

 the latter being deeply and very closely asperate. L. | mm. 



A single example was taken in August, 1868, by the Rev. A. Matthews in Tlioresl)y 

 Park, Xottingliamsliire, by sweeping under oaks. 



T. Jansoni, Matth. Oblong, subcylindrical, subparallel, deep black, 

 clothed very sparingly Avith short silvery hairs ; head short, very broad, 

 antennaj rather long, pitchy-testaceous or yellow ; thorax scarcely dilated 

 behind, with sides rather broadly margined, with moderate tubercles, 

 arranged in irregular remote sinuate jows, interspaces very shining, 

 deeply reticulate, posterior angles rather distinctly produced ; elytra 

 rather long, parallel-sided until behind middle, and thence rounded to 

 apex, deeply asperate in remote, transversely sinuate, rows ; legs 

 moderate, clear yellow ; under-side black, with mouth, coxas, and apex 

 of metasternum, yellow. L. \ mm. 



