Geodephagous Coleoptera oj Japan. 261 
Allied to //. riificornis, but entirely dull black, with 
the exception of the tawny-reddish antennre and palpi, 
and the entire upper surface is minutely punctulated, the 
elytra having a tawny silky pubescence similar to ruficornis. 
The head is similar in form, but relatively larger, in both 
sexes. The thorax is larger, more regularly rounded on 
the sides, and with raised lateral rims (not explanate) and 
obtuse hind angles ; its whole surface is punctulate. 
i^ H. tridens, Morawitz, Bull. Ac. St. Petersb. v. 1863, 
p. 326 ; id. Beitr. p. 69, t. 1, f. 26. 
Hakodadi. 
I have not seen this species, which resembles a small 
riificornis, but has impunctate inner interstices of the 
elytra, and a tridentate spur to the anterior tibias. 
//. l(Bvicollis, Dufts. Fn. Austr. ii. 163 ; Morawitz, Beitr. 
p. 71 ; rufjicollis, Motsch. Etudes Ent. 1860, p. 5. ? 
Nagasaki; Hiogo (abundant) ; Hakodadi (Moraw.). 
Japanese specimens differ from those of central Europe 
in being perceptibly more convex, of a browner-black hue, 
and having the antennro, like the legs, wholly tawny- 
reddish. As, however, it is a variable species in Europe, 
I agree with Morawitz in thinking it inadvisable to dis- 
tinguish it by a separate name. Motschulsky has stated 
that his riigicollis = Japonicus, MoraAv. If so, his de- 
scription is utterly beside the mark ; but it is perhaps 
waste of time to try to understand what this recklessly in- 
accurate author meant by his diagnosis. 
H. Japonicus, MoraAvitz, Bull. Ac. St. Petersb. v. 
1863, 327. 
Hiogo ; Nagasaki ; Hakodadi. Also at Kiu-Kiang, on 
the Yang-tsze, Shanghai, Foochow, and abundant in the 
Island of Formosa. 
H. argutor aides, n. sp. 
Elongatus, niger nitidus, partibus oris, antennis extus, 
pedibusque rufo-piceis; capite parvo, thorace valde elongato- 
quadrato, lateribus antice leviter rotundato, postice per- 
parum angustato, angulis posticis rectis, basi utrinque 
fovea magntt grosse punctata; elytris oblongis, apice nullo- 
modo sinuatis, fortiter striatis. 
Long. 4 lin. $ . 
Nagasaki ; several examples, under dead leaves. 
TRANS. ENT. SOC. 1873. — PART II. (iMAY.) T 
