Plii/topliagoiis ColeojHcra of Japan. 87 
surface remotely punctured ; along the basal margin is 
placed a single row of punctures. Scutellum narrowly 
ovate. Elytra rather broader than the base of the thorax, 
slightly narrowed posteriorly, convex, sulcate - striate, 
each stria impressed with a single roAv of fine, elongate 
punctures ; interspaces convex, smooth, impuuctate. 
Genus DiORYCTUS, Suffi.-. 
Lin. Ent. xiv. 3. 
Only two species of this rare and interesting genus have 
previously been described; one (the type) by Suifrian, from 
Ceylon, the other by myself from Sumatra, brought from 
that country by ]\Ir. AVallace. 
I possess a fourth species, midescribed, sent from Siam 
by the late M. Mouhot; all, as will be seen, are Asiatic. 
Dioryctus Lcwisil. 
Rotundato-ovatus, valde con vexus, obscure piceus; subtus 
niger, pedibus antennisquc flavis ; thorace subcrebre punc- 
tato ; elytris regulariter punctato-striatis, striis leviter sul- 
catis, interstitiis minute punctatis. 
Long. 1 \ lin. 
Hab. — Nagasaki ; a single specimen only. 
Thorax more than twice as broad at the base as long, 
sides rounded and quickly converging from base to apex ; 
basal margin distinctly bisinuate on either side ; basal lobe 
strongly produced, acute, concealing the minute scutellum ; 
above convex, somewhat closely impressed with oblong- 
punctures. Scutellum minute. Elytra convex, sides 
strongly lobed at the base ; regularly punctate-striate, the 
stria3 slightly sulcate ; inters2:)aces flattened on the inner disk, 
convex towards the apex and on the outer disk, finely but 
not closely punctured. Prosternnm transverse, its siu-facc 
transversely concave, the medial longitudinal ridge being- 
obsolete. 
The present species, of which Mr. Lewis possesses a 
single specimen, differs from the type in the central ridge 
on the prosternnm being obsolete; in all other generic 
characters it closely agrees. 
Genus Cryptocephalus, Geoff. 
SufFr. Lin. Ent. ii. 13. 
All the fifteen species enumerated or described in the 
