46 LAMELLICORNIA, [ Trogina. 
of the tribe are oblong and convex, with a rough scabrous surface, and 
are often covered with a crust of dirt; they live in dry decomposing 
careases, hides, horns, &e.; the antenne are 9- or 10-jointed with the 
club 3-jointed ; the ventral segments are five in number and free; the 
abdomen is covered by the elytra; all the coxe are contiguous; the 
legs are comparatively slender and not strongly fossorial; the larva much 
ome those of the Be but are distinguished by having the 
antenne 3-jointed instead of 5-jointed. 
TROX, Fabricius. 
This genus contains about a hundred species, which are very widely 
distributed in tropical, temperate, and cold countries, ranging from 
Siberia in the north to Patagonia in the south; eleven species occur in 
Europe, of which three are found in Britain, one of which is somewhat 
doubtfully indigenous. 
I. Size larger; form broader ; elytra considerably widened 
behind. 
. Striv of elytra strongly punetured . . . . . . . . YT. saBuULOsus, L. 
Striz of elytra feebly punctured . . . . . . TT. HIsPipus, Laich. 
IL. Size smaller; form narrower ; elytra not much widened 
behindee ete bo Se Fe Lee Re es est ORB ER SeLe 
T. sabulosus, L. Obovate, black or greyish-black, very dull ; 
head narrowed in front, rugose, antenne reddish; thorax transverse, 
slightly narrowed in front, anterior angles projecting, posterior angles 
sharp right angles, upper surface uneven, very thickly punctured, sides 
and base and also sides of head fringed with yellowish sete ; elytra with 
flat, broad, strongly punctured striz, alternate interstices raised and 
furnished with bunches of depressed short yellowish or greyish-yellow 
sete; legs dull black. L. 7-8 mm. 
Sandy places; in dry carcases, rams’ horns, &c.; not common; Sundridge (Kent), 
Mickleham, Wimbledon, Coombe Wood, Headley; Dover; Hastings; Devon ; 
Newmarket Heath ; Bewdley ; Cannock Chase; Scotland, very rare, Tay district. 
T. hispidus, Laich. Of the size of the largest specimens of 7’. 
sabulosus, and very similar to it in form and sculpture; it differs, 
however, in having the striz of the elytra finely punctured, and in the 
fact that the interstices are tuberculate, the rows being alternately 
large and small; the tubercles are furnished with bunches of moderately 
long erect yellowish sete. L. 8 mm. 
The species was introduced as British by Mr. Waterhouse in 1860 on 
the authority of a specimen or specimens of which he did not know the 
locality, and there is also a specimen in the Rey. A. Matthew’s collection, 
which was taken by the Rev. H. Matthews. 
T. scaber, L. (arenarius, F.). Much smaller and narrower than 
either of the preceding species, and less convex, oblong-oboyate, slightly 
