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Show 242 MR. M. JACOBY ON PHYTOPHAGOUS COLEOPTERA [Mar. 6, Length 8 millim. Head very finely and sparingly punctured, flavous ; antennae black, the lower four joints flavous, terminal joints strongly dilated ; thorax rather more than twice as broad as long, strongly narrowed in front, the lateral margins very feebly, the posterior one very strongly rounded, the disc transversely convex, extremely minutely and rather sparingly punctured, the punctures more distinct at the sides and more closely placed ; scutellum flavous, impuuctate; elytra not wider at the base than the thorax, but slightly widened posteriorly, very closely and much more strongly punctured than the thorax, the punctures evenly distributed and the interstices aciculate, black, shining, the extreme apex flavous ; below black, the prosternum, part of the metasternum, and the last abdominal segment flavous. Hab. Cameroons. Distinct in coloration from any of its allies. Ceralces ornata Baly; Ceralces spilota Baly ; Ceralces walleri Baly.-These three species, of which Mr. Gahan and I have examined the types in the British Museum, have bifid claws and closed anterior cavities, and must find their places in Lygaria. L. mutabilis Kolbe is identical with L. spilota and his variety bimacu-lata with L. ornata Baly; Lygaria robusta Weise is probably identical with Baly's L. walleri. PLAGIODERA CONGOENSIS, sp. n. Fulvous below, the antennae and the legs black, above flavous ; thorax with three longitudinal stripes and a spot at the sides piceous, closely punctured ; elytra closely and strongly punctured, a transverse angular and interrupted band before and another one below the middle, as well as a spot near the apex, blackish. Length 7 millim. Evenly rounded and moderately convex, the head strongly punctured, fulvous at the vertex, with a flavous subquadrate spot between the eyes, the latter distinctly notched, the clypeus raised into a transverse ridge anteriorly; antennae extending to the base of the thorax, black, the lower four joints more or less flavous below, terminal joints strongly transversely widened; thorax more than twice as broad as long, the anterior and posterior margins parallel, strongly curved, the sides nearly straight, narrowed towards the apex, the angles not produced but distinct, the surface irregularly and rather finely punctured, the punctures of different sizes, more closely placed and larger at the sides than on the disc the ground-colour flavous, a medially strongly dilated or diamond shaped band at the middle, from base to apex, another narrower band at the sides, interrupted anteriorly, and a small spot near the anterior angles, piceous ; scutellum broad, black ; elytra evenly strongly, and closely punctured, flavous, each elytron with an oblique stripe from the middle of the base towards the suture, of greatly angulate shape and connected with a spot at the sides a somewhat similar band, strongly angulate or dentate, below the |
