12 LAMELLICORNIA. [| Onthophagus. 
Female with the head more thickly and strongly punctured than in 
the male, with two transverse keels, one between antenne and one 
between eyes; the thorax also is more strongly punctured than in the 
male, and is strongly reflexed in front. 
In some of the males the horns are very short and straight, or even 
almost wanting. 
In dung; very rare and somewhat doubtfully indigenous; Brockenhurst and 
Lyndhurst, New Forest (Stephens) ; Exmouth, rare (Parfitt’s Devonshire Catalogue, 
p. 68); the species is rather common in Jersey, and many of the specimens in our 
collections come from that and the adjacent islands, 
O. nutans, F. (verticicornis, Laich). Black, dull, occasionally 
with a greenish reflection on the vertex of the head and on thorax; head 
varying in the sexes, antenne brown with blackish club; thorax 
thickly punctured, each puncture being flanked with a raised granule, 
rather short, with anterior angles projecting; elytra with fine and 
obsoletely punctured striz, interstices finely granulate ; legs black, tarsi 
sometimes brownish. L. 7-8} mm. 
Male with the head subtriangular, sparingly and finely punctured, 
with the vertex produced into a broad plate which is continued into a 
large flat curved horn; thorax reflexed in front, strongly sinuate or 
emarginate in middle of anterior margin. 
Female with the head rounder and more thickly and strongly punc- 
tured, with two transverse carine; thorax reflexed in front, depressed 
on both sides, and produced in middle in the form of two tubercles. 
In the male the horns are sometimes more or less obsolete, and the 
head shorter, 
In dung; not common; Chingford ; Walthamstow ; Bath (in some numbers in one 
field only in May, R. Gillo) ; Swansea. 
OQ. ovatus, L. Much smaller than either of the preceding species, 
black, dull, occasionally with a feeble metallic reflection on thorax ; head 
rounded in front, with a raised margin which is slightly emarginate in 
middle, rather diffusely punctured behind, more thickly in front ; thorax 
short, rather thickly punctate-granulate, anterior angles blunt ; elytra 
with obsolete and very feebly crenate strie@, interstices granulate in 
irregular rows ; legs black, tarsi sometimes pitchy. L. 4-45 mm. 
Male with a raised transverse ,carina between eyes; female with two 
carine on head, of which the front one is curved; the latter is some- 
times indicated in small specimens of the male. 
In dung, vegetable refuse, &c.; generally distributed and common throughout the 
London district and the south ; not so common in the Midlands and further north ; 
Bewdley ; Church Stretton; Bath; Swansea; Barmouth; Repton; Blackpool ; More- 
cambe ; not recorded from the Northumberland and Durham district ; Scotland, very 
local, Forth district only; it is probably local in Ireland. 
O. coenobita, Herbst. Head and thorax of a rather bright neous 
green colour, or coppery, elytra of a rather brighter testaceous colour 
than in the three following species, with the dark markings very indis- 
