Coleocerus rotundicollis Champion 1911

Ovate, convex, black; variegate with a dense clothing of rather large, imbricate, pale brown and whitish scales, the elytra also slightly mottled with fuscous, the whitish scales condensed on the prothorax into a faint median line and a curved submarginal stripe on each side, and those on the elytra into one or two transverse patches on the outer part of the disc and various irregular more or less confluent smaller spots, the scales on the under surface whitish; the surface also set with short, scattered, curled, decumbent setæ. Rostrum broad, depressed down the middle, and with a small bare fovea behind the nasal plate; joint 1 of the funiculus nearly twice as long as 2. Prothorax transverse, very little narrower at the apex than at the base, the base itself bisinuate, the sides rounded from the obtuse hind angles, the surface densely punctate. Scutellum small, transverse. Elytra convex, oval, the humeri rounded; punctate-striate, the interstices feebly convex. Mesosternal protuberance small, subconical. Legs stout.
 
Length 4—5, breadth 2—2½ millim.

Hab.MEXICO, Acapulco (Höge; Knab, in U. S. Nat. Mus.).

Seven examples, varying a little in the intensity of the markings. The rotundate, immarginate prothorax and the feebly protuberant mesosternum are the chief characters of this species.