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Show 1871.] PROF. A. NEWTON ON NEW OR RARE BIRDS' EGGS. 55 ened and reflexed, and of a polished pink carnelian appearance within columellar margin triangularly dilated, overhanging the umbilicus. Diameter, greatest 1*10, least 0*83 ; height 0*80 of an inch. Hab. Mount Dryander, Port Denison, Queensland. 6. HELIX O'CONNELLENSIS, sp. nov. (Plate III. figs. 4, 4 a.) Shell with a wide, open, funnel-shaped umbilicus, scmiglobose, smooth, base flat and much excavated round the umbilicus, blackish chestnut, rather solid; spire obtuse; whorls 6; suture margined with a rather broad white line; aperture oval, lilac within, darker at the lip, which is expanded throughout; margins approaching, columellar margin broadly expanded and overhanging the funnel-shaped umbilicus. Hab. The O'Connell River, Port Denison, Queensland. Diameter, greatest 1*15, least 0*87 ; height 0*85 of an inch. Closely allied to and resembling H. rainbirdi, Cox, in the excavated base around the umbilicus ; but it is a smaller species, and easily distinguished from H. rainbirdi by its white-margined suture. 7. HELIX WHARTONI, sp. nov. (Plate III. figs. 5, 5 a.) Shell deeply, openly umbilicated, depressedly globose, thin, finely striated, profusely banded with yellow and light-chestnut bands varying in width and slightly undulating; spire slightly raised; whorls 6|, rather flat, last whorl descending in front; aperture lunar-oval, margins approaching, joined by a thin callus; lip slightly thickened and everted ; columellar margin triangularly dilated, half concealing the umbilicus ; aperture pearly within. Diameter, greatest 1*53, least 1*15; height 1*10 of an inch. Hab. Port Denison, Queensland. This is a very constant species, and in great abundance, showing but little variation. It is allied to H. appendiculata, Reeve, but is a thinner and lighter shell and more depressed. DESCRIPTION OF PLATE III. Figs. 1, la. Helixgratiosa, p. 53. 2, 2 a. coxeni, p. 54. 3t 3 a. sarda-labiata, p. 54. 4, 4 a. o'connellensis, p. 55. 5, 5 a. whartoni, p. 55. 3. On some New or Rare Birds' Eggs. By ALFRED NEWTON, M.A., F.U.S., V.P.Z.S. [Received January 17, 1871.] (Plate IV.) In continuation of the notes which I have before (P. Z. S. 1861, . 393, and 1867, p. 161) presented to the Society, I have for a |