220 . 
ONTHOPHILUS SULCATUS. 
Order Coleoptera. Fam. Histeridae Leach, Byrrhii Eat. 
Type of the Genus Hister striatus Fab. 
Onthophilus Leach , Sam. — Hister Forst ., Fab., Lat ., Payk., Marsh., 
Sturm. 
Antennee inserted on each side the crown of the head, before the 
eyes, geniculated, 1 1 -jointed, basal joint long, robust, subclavate, 
2nd subglobose, robust, 3rd longer slender, 5 following subrao- 
niliform, the remainder forming a somewhat lenticular pubescent 
club (6). 
Labrum broad, transverse, oval, producing a very few short 
bristles (1). 
Mandibles subtrigonate, coriaceous, internal margin membranous 
and pubescent, apex emarginate (2). 
Maxillce terminated by a large subovate, pubescent lobe, with a 
minute bifid one on the inside. Palpi rather long, slender and 
cylindric, basal joint minute, 2nd long curved subclavate, 3rd 
cupshaped, 4th elongate conic (3). 
Mentum broad transverse quadrate. Lip short, broad, bilobed, 
pubescent on the inside, producing a few long threads exter- 
nally. Palpi inserted at the base of the lip, remote, triarticulate, 
basal joint long slender, 2nd small cupshaped, 3rd more robust 
oval (4). 
Head small. Eyes oblong . Thorax transverse, subtrigonate, anterior 
margin concave , basal convex, forming an obtuse angle in the centre. 
Scutellum concealed. Wings very long and ample. Elytra covering 
nearly the whole abdomen, slightly truncated. Legs long. Tibiae 
long, slander compressed, truncated obliquely at the apex, ciliated in- 
ternally, producing a few obscure spines externally towards the apex. 
Tarsi long and slender, 5 -jointed, joints obovate of equal size, ex- 
cepting the last which is much longer. Claws simple (5, afore leg). 
Sulcatus Fab. Ent. Syst. v. 1. pars 1. p. 74. n. 12. — Payk . Mon . 
Hist. p. 99. n. 83. — globulosus Oliv. 
Ovate, dull black. Mouth and antennae, excepting the basal 
joint, dull ferruginous. Head and thorax punctured, the latter 
with 5 elevated lines, the central one furcate before and chan- 
nelled at the base. Elytra with the suture and 3 lines on each 
very much elevated, the spaces between forming 4 fine ridges, 
2 of which are sparingly punctured. Abdomen punctured. Legs 
slightly inclining to castaneous. 
In the Author's and other Cabinets . 
