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Show 244 MR. p. C A M E R O N O N [Mar. 19, possess this structure. Mr. Perkins mentions the remarkable fact that in this species from N e w Britain the female is destitute of the special chamber, though it exists in the closely allied K. cestuans." The New Britain bee is closely allied to the last mentioned species, from which it differs in not having the whole of the upper part of the thorax covered with yellowish hair. The species may be a''form of X. provida Smith, from Mysol aud Waigiou; but I cannot make out this with any degree of certainty, either from the original description (Journ. Linn. Soc. vii. p. 48) or from that given in his Monograph of Xylocopa in Trans. Ent. Soc. 1874, p. 274. 2 • Black ; the hairs black, except on the thorax behind the tegulse, where they are orange-yellow. The basal three joints of the antennae are bare, smooth, and shining; the rest are opaque and thickly covered with a pale microscopic down; the 3rd joint is narrow and longer than the 4th and 5th united. The hair on the head (including the face) is long, dense, and deep black. The clypeus is closely and deeply punctured ; its top, centre, and a curved line on the sides are smooth and shining; its apex is distinctly raised and separated. The mandibular teeth are bluntly rounded; the upper is rounded and not much shorter than the lower. The wings are fuscous black, with a dull greenish iridescence ; the 2nd transverse cubital nervure has on the upper two-thirds a straight, oblique slope; the lower third is not, or only very slightly, oblique; the upper and lower halves of the 2nd recurrent nervures are oblique, straight, and form an angle at their junction and are not roundly curved as in X. cestuans. ANTHOPHORA ZONATA Fab. A common Oriental species. MEGACHILE MEGISTIA, sp. nov. Nigra, dense nigro hirsuta; fronte, facie clypeoque longe albo-pilosis ; alis nigro-violaceis. 3 • Long. 13 mm. Scape of antennae almost bare; the flagellum covered with a pale microscopic down. Front and vertex closely and distinctly punctured and covered with black hair; the lower part of the front, the face, and clypeus thickly covered with long pale fulvous hair; the clypeus is rugosely punctured. The basal half of the mandibles closely punctured; there is a large, not very sharply pointed apical tooth, and a broad, bluntly pointed subapical one. Thorax closely and distinctly punctured and thickly covered with black hair ; the pronotum and the parts above and below tbe tegulae with longer white hair. The upper part of the median segment is opaque and shagreened ; the lower irregularly punctured. Legs black, thickly covered with black hair; the base of the anterior with longer white hair; the anterior femora in front and the middle joints of tbe front tarsi are rufo-testaceous ; the coxae are not toothed. Abdomen black ; the 4th and 5th segments edged |