OCR Text |
Show 1885.] COLEOPTERA FROM JAPAN. 199 spilota, Baly, but differs in its less elongate and more square shape and in the differently sculptured elytra; the latter show immediately below the middle, near the suture, an apparently deeply excavated space, caused partly by the strongly raised principal ridge, which limits this space laterally : the anterior portion of the elytra within the ridge only shows a few very small tubercles near the suture; in C. spilota there is a distinct tubercle in the corresponding portion ; the elevate ridges are but slightly raised and the excavated space below the middle is wanting. CHLAMYS SPILOTA, Baly. Of this species, a variety obtained at Miyanoshito is of nearly entirely fulvous colour, the thorax being transversely spotted with black. C. spilota may be separated from other allied forms principally by the gibbous or posteriorly elevated shape of the thorax ; this elevation or bump is somewhat conically shaped and is not divided at the middle by a longitudinal channel, so frequently the case in other species, although the apex of the tuberosity is faintly sulcate. Another normally coloured specimen of this species was obtained at Nakone. Genus CRYPTOCEPHALUS, Geoffr. C R Y P T O C E P H A L U S LIMBATIPENNIS, n. sp. Black : clypeus, anterior and lateral margin of the thorax and two basal spots of the latter yellow; basal joints of antennae and the legs fulvous; thorax rugose-punctate at the sides; elytra strongly punctate-striate, black, the lateral margins narrowly flavous. Length 1| line. Head closely and distinctly punctured, black ; the clypeus, labrum, and part of the sides below the eyes flavous ; antennae black, the five basal joints fulvous, fourth joint slightly longer than the third. Thorax about twice as broad as long, the sides nearly straight, produced in a point at the posterior angles; surface closely covered with distinct and somewhat elongate punctures, confluent and forming elongate and deep strigae at the sides, the anterior and lateral margins narrow, yellow, the former with a slight indentation at the middle, which intrudes into the black-coloured portion; at the base, immediately above the scutellum, two closely approached fulvous spots are placed. Scutellum elongate, raised behind. Elytra with regular rows of deep and not very closely approached punctures, which get less deep below the middle but are distinct to the apex, the latter of which is covered closely with other fine punctures ; interspaces at the sides below the shoulder here and there somewhat transversely wrinkled; humeral callus very prominent, the extreme base impunctate ; the colour of the disk entirely black, the lateral margin narrowly flavous, this colour is slightly widened at a place near and below the middle. Pygidium black, margined with yellow. Legs entirely fulvous. Shimonosuwa (Suwa Lake). |