Anisopogon ludius, n. sp. ♂.—Black, the tibiæ and tarsi dark reddish brown. Face gently convex, white pilose, bristles of lower part black; first joint of antennæ slightly longer than the second, the third joint tapering to the tip, three times as long as the second, the style slender, seven-eights as long as the third antennal joint; pile of occiput, thorax, pleura, coxæ and venter white; upper side of each front tarsal joint with a dense covering of appressed white hairs; upper side of middle femora toward its apex with a dense covering of short appressed black hairs, which, however, leave a large elliptical naked space between the apex and the middle; middle tibiae white pilose in front, and above the middle ornamented with a large patch of appressed black hairs and bristles, which form an inner and an outer fringe; inner side of hind tibiae near the tip, and also of the hind metatarsi, densely bright yellow pubescent; wings smoky brown, lightest at the apex and along the hind margin; all posterior and the anal cell open.