322 MANDIBULATA. COI.EOPTERA. 



The chief external distinctions of the insects of this genus consist 

 in the depression and sculpture of the thorax, the smallness of 

 the head, width of body, brevity of the elytra, by which they differ 

 from Oxytelus, exclusively of minor diversities in the trophi, antennae, 

 &c.: — the only known species is usually found beneath the bark of 

 trees. 



Sp. 1. bracliypterus. Niger, nitidus, thorace impresso, eJytris 'piceis, punctula- 

 tissimis, pedibus pallidis. (Long. corp. 2 — 2§ lin.) 



Sta. bracliypterus. Marsham. — Oxyt. brachypterus. Stepli. Catal. 292. 

 No. 3177. — Apl. brachypterus. Steph. Nomen. 2d edit. col. 106. 



Black, or pitchy, glabrous, shining: head rather wider than the thorax, some- 

 what rounded, covered with scattered punctures, with a strong tubercle on 

 each side before the eyes : thorax scarcely as long as the head, subtruncate 

 and widest in front, somewhat rounded behind, sparingly punctured,with two 

 punctured longitudinal foveae on the disc, and an obscure impression towards 

 each lateral margin : elytra pitchy, very much punctured, clothed with a 

 very short pubescence, the base near the suture impressed : abdomen rather 

 broad, margined, slightly pubescent, with the extreme margin of the ante- 

 penultimate segment whitish : legs pale or pale testaceous : antennae pitchy 

 or pitchy-black, with the base paler : mouth and palpi pitchy-red. 



The other sex is smaller, with the head narrower than the thorax. 



Apparently rare : I have once taken this insect near London, and 

 have one specimen from the Marshamian collection. " Near Ipswich 

 by Mr. Sheppard; and near Barham, Jan. 1809." — Kirhy MSS. 



Genus DXXXV. — Trogophheus, Mannerheim. 



Antennae geniculated, the basal joint elongate, cylindric, the remainder small, 

 obeonic- truncate, equal in length, but increasing in diameter to the apex, the 

 terminal joint largest, ovate. Palpi unequal ; maxillary longest, with the 

 penultimate joint globose, tumid, the terminal very minute, aciculated : 

 labial with equal joints, the extreme one acuminated : labrum transverse, 

 truncate : mandibles bidentate within : head rounded, unarmed ; thorax sub- 

 cordate : body linear depressed : legs short ; tibia slender, straight, all un- 

 armed, but densely ciliated: tarsi distinctly triarticulate, the terminal 

 joint longer than the others united. 



This genus, which was detached by Mannerheim from Oxytelus, 

 may be known by having all the tibiae unarmed on their outer edge, 

 but densely ciliated, as well as by the dissimilarity in the antennae, 

 trophi, &c. : — the species are found beneath bark of trees, or in fungi. 



