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Show 1878.] FROM THE ANDAMAN ISLANDS. 805 delicate pale pink. The spire too is peculiar, on account of the first whorls being suddenly elevated into a little prominent cone. Since writing the above description I have seen a larger specimen from the collection of Dr. Hungerford. It measures 31 millims. in length and 15 in diameter; and the markings are rather larger, certain spots a little above the middle of the last whorl taking the form of a transverse interrupted band (fig. 1 a). 2. CONUS CEYLANENSIS, Hwass. Hab. Red Sea, Ceylon, Rodriguez Island ; varieties at Sandwich Islands, Lord Hood's Island, &c. 3. PLEUROTOMA (DRILLIA) VARIABILIS, Smith, Annals & Mag. Nat. Hist. 1877, vol. xix. p. 495. (Plate L. figs. 2 & 3.) There is a non-adult variety of this species, which does not exhibit at this stage of growth any indication of the slight umbilical rimation which is characteristic of the mature shell. It is whitish dotted with brown beneath the suture, and stained with a darker tint above it in the spaces between the short costae ; and the spiral lirae are also dotted with brown. The body-whorl is encircled around the middle by a broad brownish band, which is darker at the edges, and below this it is entirely white. 4. PLEUROTOMA (DRILLIA) WILMERI. (Plate L. fig. 4.) Shell subfusiform, not rimate, white, dotted with brown beneath the sutural line, and with a series of brown dots or (in other words) an interrupted line around the middle, the dots being situated just above the interspaces between the nodules, which form a series a little below the middle of the whorls. The lower half of the body-whorl dark brown ; and a spot of the same colour stains the shell at the superior sinus; the apex is also brown. Whorls ten, broadly concave above, and somewhat acutely noduled below ; nodules eleven in number on the penultimate whorl, the last volution transversely striated, the basal striae being stronger than elsewhere; aperture rather small, white, stained with dark brown at the short basal canal; labrum thin, arcuate when viewed laterally, deeply and broadly sinuated at the suture, with a second small sinus or indentation near the base; columella but little curved or sinuous, covered with a thin brown callosity, terminating above in a large white tubercle. Length 16 mill., diam. 6. This shell is very distinguishable from its congeners, on account of the peculiarity of its painting, and the series of sharpish tubercles encircling the whorls. I have much pleasure in naming it after Capt. Wilmer, its discoverer. 5. TEREBRA AFFINIS, Gray. Hab. Philippines, Fiji, Tahiti. 6. TEREBRA EXIGUA, Deshayes. Hab. East Australia. It is interesting to obtain authentic examples of this species from PROC. ZOOL. SOC-1878, No. LIII. 53 |