490 DESCRIPTIONS OF NEW SPECIES OF AUSTRALIAN COLEOPTERA. Part xi. By Arthur M. Lea, F.E.S. (Plate xlviii.) Family SCARAB^ID^. BoLBOCERAS iNCONSUETUM, n.sp. (Plate xlviii., fig.l). Castaneous. Undersurface densely clothed. Head irregularly concave; between antennse subtriangularly elevated, the middle of the elevation triangularly notched in middle; with shallow feeble punctures, absent from basal portion; canthi acutely margined; mandibles evenly rounded. Frothorax (excluding the sublateral fovete, which are rather larger than usual) with four not very large fovese, two near the front margin immediately behind the eyes, and two behind these almost in the middle, the two median ones separated by a distinct transverse obtuse ridge, but each feebly connected with the one in front of it; a short subconical tubercle in line with the ridge and almost halfway between it and the side; sides with fairly dense but almost obsolete punctures, with some larger distinct ones irregu-larly scattered about. Scutellum impunctate. Elytra striate-punctate, thirteenth and foiu'teenth striae irregularly conjoined towards base. Front tihi(V with five teeth; hind ones with two carinje, between the subapical and base a row of small tubercles on each side. Length, 17 mm. Hah. — Western Australia. I have seen no species approaching this, except the following one, and am soinewhat doubtful as to the sex of the specimen, despite the presence of prothoracic tubercles, which would certainly appear to be masculine; but the transverse ridge between these appears to be feminine. In any case, it is not likely to be confused with any othsr species. The two foveai at
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