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574 . 
TROX SABULOSUS. 
Order Coleoptera. Fam. Geotrupidse. — TvogidzeMacLeay. 
Type of the Genus, Scarab seus sabulosus Linn . 
Trox Fab., Lat., MacL., Curt . — Scarabseus and Silpha Linn. 
Antennae not so long as the head, inserted in a little cavity close 
to and before the eyes, and concealed when at rest under the 
inflected sides of the thorax, capitate and 10-jointed, basal joint 
long, very stout, but small at the base, clothed with long spiny 
bristles, especially on the inside, 2nd stout, subquadrate, nar- 
rowed at the base and forming a falcate angle inside, and pro- 
ducing a few long spiny bristles, 5 following joints more slender, 
cup-shaped and transverse, excepting the 3rd ; 8th, 9th and 10th 
forming a compact subovate laminated club (6). 
Labrum transverse semiovate, the base narrowed and forming 
2 lateral angles, anterior margin unequally concave and ciliated 
with spiny bristles (1). 
Mandibles strong and stout, very convex and hairy externally, 
rather obtusely pointed with a deep rounded notch on the inside, 
covered by a leathery lobe (2). 
Maxillee with 2 lobes, the internal one having 1 or 2 strong 
teeth at the apex, and a series of spiny bristles down the in- 
side, external lobe not longer than the other, articulated and 
subtrigonate at the apex, which is furnished with 3 or 4 curved 
teeth as well as hairs, also clothed with long hairs externally at 
the base. Palpi rather long and 4-jointed, basal joint minute, 
2nd short stout and clavate, 3rd nearly as long and stout, 4th 
long and robust, fusiform- ovate (3). 
Mentum subquadrate, very hairy, sides and anterior angles 
rounded, the centre concave. 
Labium forming 2 maxillseform lobes, ciliated internally and 
concealed above by the hair of the mentum. Palpi short remote 
and triarticulate, basal joint minute and concealed amongst the 
hair, 2nd joint short somewhat obovate, 3rd longer stouter and 
ovate -conic (4). 
Head drooping, transverse -ovate : eyes small, lateral and partially 
concealed beneath the Thorax, which is transverse, broadest at the 
base, which is bisinuated, the angles acute, the centre lobed, the an- 
terior margin concave : scutellum subovate. Abdomen flat beneath. 
Elytra convex, oval, truncated at the base. Wings ample. Legs con- 
tractile, anterior with the thighs very much dilated, ovate, the inside 
very pubescent, internal edge crenated, the apex forming a knob : 
tibise compressed and dilated, except at the base, with a strong spine 
at the internal apex, where it is hollow and denticulated, the apex 
obtuse with a blunt tooth below , on the outside in the female ? with 
5 or 6 slrong teeth in the male?: tarsi short, inserted in the cavity 
close to the spine, 5 -jointed, first 4 joints turbinate, 5th longer a 
little stouter and clavate : the other tibise are more or less serrated 
externally and spurred at the apex: claws small, simple and curved 
(5, a fore leg). 
Larvce fleshy, pale and slightly hairy, the apex incurved. Waterhouse 
in Trans. Ent. Soc. 
In the Author's and other Cabinets . 
