84. Mr. Walter F. H. Blandford on the 
however, the smallest insects of the family, it would appear 
that reduction in size leads to a reduction in the number 
of joints, without involving other structural features. 
But we really require to study its structure in more 
species of this difficult and little-known genus. 
I add two more species to the one already described 
from Japan. 
Hypothenemus tristis, Kichh. 
Stephanoderes tristis, Kichh. Scol. Jap., p. 200; Rat. 
Tom., p. 150. No further examples have been taken, 
unless the following insect be a variety of this species. 
Hypothenemus peritus, sp. n. 
Oblongus, subnitidus, fusco-piceus, prothorace in medio 
dilutiore, semi-ovato, antrorsum angustato, margine antico tuber- 
culis 4, duobus mediis majoribus, ornato, anterius tuberculis 
magnis discretis notato, postice rugulose punctato ; elytris ad 
apicem subacuminatim rotundatis, subtiliter lineato-punctatis et 
setosis, interstitiis uniseriatim squamulatis. Long. 1:8 mm. 
One specimen, Nagasaki. 
Oblong, rather shining, deep fuscous, with surface of prothorax 
lighter in middle. Head finely reticulate, front subconvex, punc- 
tured in middle. Antenne sordid testaceous, funiculus 5-jointed, 
suture of club distinctly fringed. Prothorax very slightly 
broader than long, base subsinuate, basal angles obtusely rounded, 
sides slightly dilated before base and rounded, contracted towards 
apex and obscurely sinuate, apical margin with four tubercles in 
the middle, the two centre ones more prominent ; surface obtusely 
gibbous in middle, with thin covering of hairs and scales, anteriorly 
with a roundish patch of large scattered tubercles, becoming closer 
and smaller behind, interstices and base finely reticulate with 
scattered punctures, except over a narrow smooth line from base 
to middle. Elytra rather more than half as long again as 
prothorax, separately rounded at base, humeral angles rounded, 
sides parallel to posterior third, thence obliquely rounded to 
apex ; surface subcylindrical, obliquely declivous and convex 
at apex, with fine lines of punctures bearing minute hairs, the 
lines appearing impressed in certain light, interstices transversely 
rugose, with a single row of cinereous scales along middle and a 
few hairs on either side. Legs infuscate with anterior femora and 
tarsi lighter. 
Quite like H. tristis, Hichh., but differing from the type 
