14 LAMELLICORNIA. | Onthophagus. 
sheep’s dung ; I know of no locality further north than the districts here men- 
tioned. 
O. fracticornis, Payk. Head and thorax dark bronze-green or 
coppery, rather dull, elytra livid-testaceous with distinct irregular 
black markings; head rather large with raised margin, antenne brown 
with blackish club; thorax with base and sides rounded, the latter 
slightly sinuate before anterior angles, which are rather prominent, 
upper surface thickly and asperately punctured ; elytra with shallow and 
obsoletely punctured strie, interstices flat, rather distinctly punctured, 
almost in two rows; legs black with tarsi more or less ferruginous ; 
pygidium sparingly and obsoletely punctured; posterior tibiee with 
apical sete unequal. LL. 4-8 mm. 
Male with the head rather longer and more sparingly punctured than 
in female, with the vertex raised into a broad plate, which is feebly 
dentate on each side, and terminates in a more or less curved horn, 
thorax reflexed in front, simple in both sexes. 
Female with the head furnished with two transverse keels, smaller 
and more thickly and strongly punctured than in male. 
In some males the plate and horn on vertex is much abbreviated, 
and occasionally resolves itself into a carina, much as in female. 
In dung; local, and commoner near the coast than inland; not uncommon in the 
London district; Shirley, Wimbledon, &c. ; Whitstable; Deal; Dover ; Hastings ; 
Bournemouth; New Forest; Isle of Wight ; Burnham, Somerset; Bath; South Wales; 
Barmouth; Dean Forest; Bewdley Forest; Huntingdonshire ; Cleethorpes, Lincoln- 
eee ; fee district ; not recorded from the extreme north of England or from 
cotiand. 
O. nuchicornis, L. This species is closely allied to the preceding, 
but may easily be recognized by the following characters : the head and 
thorax are of a dull-black colour with very little metallic reflection ; the 
thorax has the sides rounded without any sinuation before anterior 
angles, and the elytra have the dark markings more or less distinctly 
reticulate ; the pygidium also is more distinctly punctured, and the 
apical seta of the posterior tibie are equal; the plate on vertex, which 
terminates in a horn, is not quite so broad, and the anterior margin of 
the thorax in the female is protuberant in the middle; the average size 
appears to be rather smaller, but this is a character that cannot be de- 
pended upon, as the species belonging to the genus are extremely variable 
in size. L, 5-8 mm. 
In dung; the most widely distributed of all our species; not uncommon in the 
Midlands and the south, but very rare in the north and in Scotland; London dis- 
trict, not uncommon, Shirley, Chingford, Forest Row, Belvedere, Addington, 
Greenwich, Gravesend; Delamere Forest; Whitstable; Deal; Hastings; Glanvilles 
Wootton; Isle of Wight; Devon; Burnham, Somerset; Swansea ; Barmouth ; 
Sutton Park, Birmingham; Hunstanton; Lincoln; Cleethorpes; Blackpool; South 
Shields, very rare; Scotland, very rare, Forth district, ‘‘ Ayrshire, Mr, J. P. Duncan, 
Murray’s Cat.” 
