Rhynchophorous Coleoptera of Japan. 65 
Oblong-oval, black, dull. Head finely aciculate with scattered 
punctures, front flattened, shortly pubescent, antenne pitchy- 
brown with club blackish, longer than funiculus, bluntly pointed, 
its sutures oblique. Prothorax transverse, base strongly produced 
behind and biconcave, sides strongly rounded behind, contracted 
in front and sinuate, apex nearly straight in middle ; surface 
slightly impressed in middle behind apex, not distinctly impressed 
before base, uniformly and densely granulate, with short pube- 
scence. Elytra wider than prothorax in middle and more than 
twice as long, humeral angles very obtuse, sides rounded at base, 
becoming wider, thence nearly straight, gradually and strongly 
rounded towards apices which are separately rounded ; surface 
convex, more strongly towards apex, with deep indistinctly punc- 
tured striz ; interstices in front strongly tuberculate, with a few 
scattered hairs, posteriorly with rugosities weaker, hidden by short 
fuscous hairlike scales, and with a single row of erect sete ; Ist, 
3rd and 5th elevated at apical declivity, the two latter conjoined. 
Underside punctured and finely pubescent, abdominal segments not 
very convex. Legs black, with tarsi lighter, anterior tibiz dis- 
tinctly spined on outer side of apex. 
The largest species in the genus. 
Hylesinus laticollis, sp. n. 
Ovalis, convexus, obscurus, breviter pilosus, niger, antennis 
ferrugineis, prothorace fere duplo latiore quam longiore, basi valde 
producta, lateraliter fortiter rotundato, supra rugose exasperato, 
lateribus antice muricatis, linea media obsoleta laevi, ante basim 
utrinque oblique impresso ; elytris prothorace plus quam duplo 
longioribus, versus apicem oblique declivibus, striatis, striis ad 
medium uniseriatim punctatis, postice laevibus ; interstitiis 
similibus, antice tuberculatis, postice squamulis brevibus fuscis 
vestitis, margine laterali breviter setoso ; abdomine valde convexo 
ad apicem setoso. Long. 4—4:2 mm; lat. 2°2—2°3 mm. 
Three examples, taken by a native collector at Sapporo 
in 1883. 
Broad oval, convex, black. Head strongly punctured, front 
flattened, shortly hairy ; in two specimens, probably males, im- 
pressed over mouth with a fine central carina, and with stronger 
pubescence ; in the other, probably a female, with impression and 
carina obsolete and hairs scantier; epistoma shortly produced over 
mandibles, vertex reticulate. Antenne ferruginous, club long, 
TRANS. ENT. SOC. LOND. 1894,—PaRT I. (MARCH.) 
