Mr. G. Lewis on new Japanese Histeride. 135 
middle they are soldered together, and a few punctures alone 
remain to indicate their limits. The broad lateral band of 
punctures on the thorax separates it from all the other Histerids 
in Japan ; but it may be placed in the catalogue near H. Jekel?. 
This peculiar Hister has been found in the district of the 
Ishikari river in Yezo. 
flister concolor, un. sp. 
Ovalis, subconvexus, niger, nitidus; fronte stria integra; pronoto 
stria laterali externa valde, interna vix abbreviatis ; elytris striis 
1-3 integris, 4-6 brevibus ; propygidio subfoveolato pygidioque 
dense et grosse punctatis. L. 8 mill. 
H. concolor is sculptured like H. unicolor, except on the two 
abdominal segments seen from above, which are strongly and 
closely punctured. In its general facies itis like H. 4-notatus, 
being wider and less convex than H. unicolor, and the interstice 
between the inner thoracic stria and the outer margin is wider 
and the short stria is more in the centre of this interstice. 
This is also from the vicinity of the Ishikari river. 
Note.—I found three specimens of Hister japanus, Motsch., 
on the beach at Yokohama; it comes near H. 4-notatus, Scriba. 
Hister boleti, n. sp. 
Ovalis, convexus, niger, nitidus; fronte plana, stria integra pro- 
funde impressa; pronoto striis punctatis, stria pone oculos utrin- 
que deflexa ; elytris striis crenatis, 1-3 dorsalibus integris, 4, 5, et 
suturali brevibus ; propygidio subfoveolato pygidioque punctatis ; 
mesosterno leviter sinuato. L. 7 mill. 
This species is the size of H. caduverinus, but in general 
sculpture comes nearest to the rare Huropean JH. distinctus. 
From the latter, the longer mandibles, the remarkable deflexure 
in the thoracic stria behind the eyes, the fourth dorsal stria 
not reaching the middle, and the sinuate mesosternum (as in 
H. cadaverinus) are good distinguishing characters. 
It oceurs commonly at Chiuzenjiin an arboreal fungus, and 
I also obtained it at Kashiwagi in the Kii peninsula. 
Hister agnatus, n. sp. 
Ovalis, subconvexus, niger, nitidus ; pronoto striis lateralibus inte- 
gris, postice approximatis; elytris striis 4 dorsalibus integris, 
5 et 6 abbreviatis; prosterno impunctato. L. 5 mill. 
This species is almost identical with //. cadaverinus as re- 
gards sculpture, but it is much less convex. It is not larger 
than H. foedatus, which it resembles in the structural plan of its 
