176 COLEOPTERA 



Head short and broad, as broad as the thorax, above with a very 

 deep, large, irregular depression on each side, separating the eye and 

 the portion of the head behind it from the middle ; the broad middle 

 part of the head is rather elevated towards the vertex, and emarginate in 

 the middle behind ; it is only very finely and sparingly punctured. The 

 thorax is very elongate, and is at the base as broad as the elytra ; it is 

 very slightly narrowed towards the front, but the narrowing does not 

 continue quite to the front, and the front angles are rather sharply 

 marked and distinct; the upper surface is dull, and along the middle 

 are two series of coarse punctures, placed each in an ill-defined impres- 

 sion and diverging a little towards the front ; the lateral margins are 

 neatly defined, and just within each is a series of punctures. The 

 elytra are elongate and narrow, and bear each four grooves in which are 

 placed coarse punctures, their hinder part is sinuate externally to facili- 

 tate the movement of the hind femora, and outside the four grooves 

 there is a line of punctures on the broader basal portion ; on the under- 

 surface there are coarse punctures at the sides of the thorax and breast, 

 and the ventral segments show some coarse punctures or impressions, 

 forming an obscure series at the base of each segment, the apical seg- 

 ment is entirely covered with very coarse and deep closely placed punc- 

 tures. The legs are stout, the femora being incrassate. 



Found in Peel Forest, Canterbury, March, 1874, by Mr. Wakefield. 



FAMILY— TROGOSITIDES. 



Ligula horny amongst the greater number. Maxillce terminated by 

 two lobes ; the internal often very small. Antennce with eleven, very 

 rarely with ten joints ; in general, the three last forming a laxly articu- 

 lated club, compressed, dentate, or perfoliated. Elytra always com- 

 pletely covering the abdomen. Legs moderate or short ; the anterior 

 and intermediate coxw transversely oval, not contiguous ; the posterior 

 semi-cylindric, strongly transversal, and contiguous ; tarsi five-jointed, 

 always simple ; their first joint very small. Abdomen composed of five 

 segments, all free. 



Group— GYMNOCHILID^. 



Internal lobe of the 7naxillcB much developed, unarmed. At least 

 four eyes among the males ; the two upper large, the two under smaller. 

 Antennm eleven-jointed, the three terminal clavate. Forehead oblique. 

 Prothorax contiguous to the elytra. Body oblong, depressed, and 

 squamose. 



Trogosita. 



Olivier ; Lacord. Hist, des Ins. Coleop., Tom. ii.,/. 343. 



Mentuin small, short, scarcely emarginated in front ; ligula horny, 

 entire ; external lobe of the jaws horny, elongate, strongly ciliated 

 inwardly. Last joint of the /<?/^/ sub-oval ; mandibles rather prominent, 



