the Lamellicorn Coleoptera of Japan. 399 
foliate, but the appendage varies in size from a quarter to half 
the length of the one succeeding it; articulations 6 to 10 are 
leaflets, of which 8 and 9 are the largest. There are only 
ten joints, and the name is unfortunate. Just before the 
suture which indicates the limit of the clypeus is a well-marked 
transverse carina, which usually stretches from side to side ; 
but in one of eighteen specimens it is interrupted in the middle. 
Motschulsky says :—‘ Carénes frontales transversales peu 
marquées et interrompués ;’’ this is not the case usually. 
Heptophylla picea, Motschulsky. 
Heptophylla picea, Motsch. Etud. Ent. p. 32 (1857). 
Holotrichia transversa, Motsch. 1. c. p. 15 (1860). 
I have united the two names above chiefly on the evidence 
relating to the frontal carina. If I am right, this is not the 
only instance of Motschulsky describing an insect twice and 
placing it in different genera. 
Hab. Kiushiu, main island, and Yezo. Very common. 
Rhizotrogus niponicus, sp. n. 
Elongatus, pallide testaceus, nitidus ; capite piceo vel rufo-brunneo ; 
thorace sparse et grosse punctato; elytris punctatis, punctis 
interdum confluentibus ; pygidio apice parum explanato. 
L. 12 mill. 
Elongate, pale testaceous, shining; the head piceous or 
reddish brown, surface uneven between the eyes, roughly and 
coarsely punctured, punctures less close along the anterior 
margin of the clypeus; eyes black and large as compared 
with those of R. solstitialis, L.; the thorax, surface uneven, 
crenulate laterally, anteriorly rectangular, posteriorly feebly 
angulate, punctate, punctures less closely set than those of 
the head; the scutellum transverse, irregularly punctured ; 
the elytra punctate, somewhat similarly to the thorax, but 
punctures sometimes confluent, sutural margin convex, smooth, 
with two similar but shorter feebly raised coste near the 
centre of the wing-case ; the pygidium somewhat rugose, the 
rugosity nearly obliterating the shallow punctures, apical 
rim distinctly but narrowly explanate; the legs and antenne 
pale, inner dentation of the claws on the first very conspicuous. 
Hab. Gotoshima. Two males. 
Polyphyjlla laticollis, Lewis. 
Polyphylla laticollis, Lew. Ent. Mon. Mag, xxiii. p. 231 (1887). 
Fairmaire in 1888 described two species of Polyphylla from 
China, which agree, I believe, with the above in having the 
