Mr. G. Lewis on new Japanese Histeride. 139 
Found only in South Japan, at Yuyama and Konose, but 
it is not rare where it occurs. 
Onthophilus flavicornis, n. sp. 
Breviter ovalis, niger, subnitid us ; antennis brunneis, clava flava ; 
fronte in medio unicostata; pronoto dense strigoso, margine an- 
gusto, subelevato ; propygidio tricarinato. L. 2 mill. 
The sculpture is very similar in every respect to that of 
the European O. striatus; the distinguishing characters are 
the colour of the antenne, and the sides of the thorax being 
only very narrowly margined, and not elevated at the base. 
There is a slight difference also of outline, and some of my 
remarks on Hester concolor will apply to this species. 
Taken from a fungus at Bukenji, near Yokohama, early in 
March 1880. 
Onthophilus ostreatus, Lewis. 
Onthophilus ostreatus, Lewis, Ent. Mo. Mag. xvi. 1879, p. 76. 
This species, which is the largest yet known in the genus, 
was formerly only recorded from China. In the autumn of 
1880 Mr. Pryer obtained a fair series near his bungalow at 
Yokohama, from refuse in a turnip field, and I am indebted 
to him for four examples. 
Onthophilus silve, n. sp. 
Suborbicularis, niger, opacus; fronte triangulariter carinata; pronoto 
parce tenuissime punctato, costis octo validis, duabus tantum ab- 
breviatis; elytris sutura, margine laterali costisque duodecim, 
elevatioribus. L. 23 mill. 
The outline of this species in the head and thorax resembles 
that of the American O. alternatus, but the insect is a little 
smaller. The thorax has eight costa, six complete, two (the 
third from the margin on each side) very short, with the punc- 
tuation of the intervening spaces very scattered and shallow. 
The elytrahave twelve costes complete and equally elevated, the 
suture and margin corresponding with them ; the interstices 
have at intervals a transverse line-like puncture, but none of 
the longitudinal punctures which are so general in this genus. 
Found under dead leaves at the Akinomiya, near the Suwa 
lake, July 31, 1881. 
Onthophilus arboreus, n. sp. 
Orbicularis, niger, hispidus, opacus; antennis clava ferruginea. 0. 
hispido proxime affinis, sed minor. L. 13 mill. 
This insect has the dorsal punctures much less deep than in 
10? 
