the Lamellicorn Coleoptera of Japan. 397 
posteriorly rectangular, anterior angles» obtuse, the lateral 
margin more or less bulges in the middle, the anterior margin 
is a narrow smooth rim, general surface less closely punctate 
than the head; the stutellum transverse, sometimes smooth, 
more often with a few irregular punctures variously placed in 
different specimens ; the elytra, sutural margin smooth and 
convex, surface punctate, punctuation rough and irregular and 
more or less obliterates two or three longitudinal coste; the 
pygidium punctate, punctures not densely set nor so deep as 
those of the thorax, rather wider just behind the base than 
the space from the middle of the base to the apex. 
This species has been assigned by Waterhouse and others 
to Ancylonycha parallela, Motsch.; but Motschulsky’s dia- 
gnosis applies equally well to Holotrichia picea, Waterh., and 
Lachnosterna diomphalia, Bates, and his specific name is 
preoccupied. Under these circumstances I have redescribed 
the species under a new name. 
Hab. Throughout Japan and at Fusan, in Korea. Gene- 
rally abundant. : 
Lachnosterna picea. 
Holotrichia picea, Waterh. Trans. Ent. Soc. Lond. p. 103 (1875). 
This species is easily recognized by the characters given by 
Waterhouse, especially by the transverse smooth margin to 
the neck. A minor character, but one which does not vary 
in my series of eight examples, is that the anterior rim of the 
thorax is not clearly free of punctures ; the punctures encroach 
on the posterior edge. This rim or margin is quite smooth 
in L. inelegans, Lew. 
Hab. Nagasaki, Chiuzenji, and Yokohama. 
Lachnosterna diomphalia, Bates. 
Lachnosterna diomphalia, Bates, Proc. Zool. Soc. p. 373 (1888). 
« LZ. parallele (Motsch.) affinis ct simillima, sed differt pygidio ¢ 
valde convexo ante apicem bicalloso. 
“TZ. 20 mill. 
This species is extremely like ZL. cneleguns, Lew., and L. 
picea, Waterh., but it differs from the first in the scutellum 
which widens out at the base, and from both in the curious 
gibbosities on the pygidium. Bates only knew the male; 
the pygidium is bigibbous in both sexes, 
Lachnosterna morosa, Waterhouse. 
This species is peculiar in having the rim of the clypeus 
