the Lamellicorn Coleoptera of Japan. 387 
Trox setifer, Waterhouse. 
Trox setifer, Waterh. 1. c. p. 98. 
Hab. I found this species in single examples at Nagasaki, 
Simabara, Nikko, and Hakodate; it has therefore a wide 
range in Japan. 
Trox opacotuberculatus, Motschulsky. 
me ee Cunee, Motsch. Etud. Ent. p. 14 (1860); Waterh. /. c. 
p- 99. 
This species has two wide circular depressions which 
occupied the median area of the thorax and two others on 
each side of them of corresponding size. Motschulsky’s 
description should, I think, read “ thorace transverso, antice 
et postice late trifoveolato,” not “ thorace transverso, antice 
et postice lato, trifoveolato”’; but the depressions are not 
properly described as fovez. 
Hab. Nagasaki, Nikko, and on the plain of Fujisan. Ac- 
cording to Kraatz (Deutsche ent. Zeit. xxiii. p. 281, 1879) it 
occurs in the Amur region. 
Trox niponensis, sp. n. 
Elongato-oblongus, opacus, clypeo semicirculari; capite punctato ; 
thorace transverso, in medio longitudinaliter canaliculato, utrinque 
obsolete bi-impresso ; elytris striatis, striis minime profundis. 
L. 52 mill. 
Elongate oblong, opaque, setose; the head semicircular 
anteriorly, arched at the sides, punctate, with two transverse 
carinee (somewhat obscure) in the middle in a line with the 
eyes; the thorax transverse, rather parallel laterally, anterior 
angles a little acutely produced, with a longitudinal median, 
rather shallow channel, and a fainter circular impression 
on each side of it rather nearer the base than the anterior edge, 
surface punctate; theelytra striate, strize shallow with irregular 
edges, there is a sutural row of setose tubercles and on the 
third interstice similar but larger and more isolated tubercles, 
fifth and seventh interstices also tuberculate, the other inter- 
stices have smaller tubercles ; the elytra somewhat parallel at 
the sides, but slightly widest behind the posterior coxe ; the 
legs, tibiz not dilated, agreeing in this respect with 7. opaco- 
tuberculatus, Motsch. 
This small species in general outline agrees best with Trox 
setifer, Waterh., but the thorax is not bisinuous anteriorly, 
nor are the anterior tibiew dilated. ‘The scutellum is similar 
in form but relatively narrower. The scutellum in 7. opaco- 
tuberculatus is nearly as wide again as in 7. niponensis, 
27* 
