Journal of conchology . COLUMN. R. BOYCOTT would be very grateful for live specimens of .A laviellata foranatomical investigation. —17, Loom Lane, Radlett. WANTED all kinds of Marine Shells not in collection. Will exchange or^ purchase. Correspondents wanted in Australia and New Zealand.—J. B. , Lakefoot, Reading. 321 JOURNAL OF CONCHOLOGY. Vol. 14. JULY, 1915. No. 11. DESCRIPTION OF A NEW RISSOINA. By J. R. LE B. TOMLIN, (Read before the Society, June gth, 1915). Rissoina ^miltozona sp. nov.— Shell regularly subulate, solid, shining, white, with a broadbrown band encircling
Journal of conchology . COLUMN. R. BOYCOTT would be very grateful for live specimens of .A laviellata foranatomical investigation. —17, Loom Lane, Radlett. WANTED all kinds of Marine Shells not in collection. Will exchange or^ purchase. Correspondents wanted in Australia and New Zealand.—J. B. , Lakefoot, Reading. 321 JOURNAL OF CONCHOLOGY. Vol. 14. JULY, 1915. No. 11. DESCRIPTION OF A NEW RISSOINA. By J. R. LE B. TOMLIN, (Read before the Society, June gth, 1915). Rissoina ^miltozona sp. nov.— Shell regularly subulate, solid, shining, white, with a broadbrown band encircling the lower part of each whorl, and some-times an additional fine brown line on the last whorl below theband ; apex strongly subulate ; suture strongly impressed ; whorls9 to 10, much flattened, protoconch consisting of two whorls,which are smooth and glassy, third whorl smooth with a prom-inent keel in the centre (visible, however, only in very freshspecimens), the others strongly ribbed longitudinally ; there are. Rissoina miltczona sp. twenty ribs on the basal whorl, all extending right to themargin, and about eighteen on the penultimate ; the basal whorl 1 ^XiXtos = red. 322 TOURNAT. OF CONCHOLOGY, VOL. I4, NO. TI, JULY, I915. is also Strongly and distantly spirally grooved at equal intervalswith six spiral lines, which cut across the longitudinals so as toform beads ; the small area at the base of the canal has also tracesof spiral sculpture, and three spirals can sometimes be faintlytraced on the penultimate whorl ; under a i-inch objective on themicroscope all the interstitial surface is seen to be extremely finelyspirally striate,, except the protoconch; aperture irregularly pyri-form and very small, having a distinct canal; columella stronglyarcuate; peristome stout and strong, but not perceptibly thick-ened, with three raised lines within the , 425 mm. : diam. max., 1*5 mm. : diam. max. of aperture, ?75 mi- The type specimen figured is from Lifu.
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Keywords: ., bookauthorconcholo, bookcentury1800, bookdecade1870, bookyear1879
