Spending the summer in England, I have, of course, hastened to examine the types of F. Srnith, and other bees contained in the collection of the British Museum. The following notes elucidate some species which had puzzled American entomologists, who had access only to the descriptions:

Chelostomoides rugifrons (Smith)

Chelostoma rugifrons, Sm., type ♀.—Would be large for Chelostoma; a transverse ridge, with large punctures, below the antennæ, and below this a smooth shining impunctate depressed area, bounded on each side by a vertical ridge, so that one gets the impression at first that the clypeus is very broadly and deeply emarginate; the long labrum, seen from above, looks like the end of an elephant's trunk, being broadened at the end, and presenting a median elevation; the “tooth near the base within” of the mandibles is a shining tubercle; the recurrrent nervures join second submarginal cell at about distances from its base and apex respectively; the basal nervure just falils to reach transverso-medical; claws broad and angled basally, but not cleft; no pulvillus (Chelostoma florisomne has a large pulvillus); first abdominal segment with a distinctly margined though shallow concavity.