History of British animals - University of Guam Marine Laboratory

332 MOLLUSCA. SOLENOSTOMATA. Voluta.VOLUTADiE.Gen. LXV. VOLUTA—Pillar plaited, the anteal folds thelargest ;extremity of the canal emarginate.296. V. catenata.— Shell pellucid, white, with four spiralbands of opake white spots, connected by rufous streaks.Mont. Test. Brit. 236. t. vi. f. 2.— Coast of Devon, Mr Swainson, Dundbar,Mr Laskey.Length |ths, breadth |th, of an inch ; shell strong, spire nearly con.cealed ;body-whorl slightly conical ; aperture the whole length of the shell ;outer-lip obsoletely denticulated within ;pillar-lip thick, with two strongand two faint folds.EXTINCT SPECIES.1. V. luctator—Shell ovate-acute, covered with tubercular spines, terminatinglongitudinal ribs, transversely striated or sulcated ; whorls concaveabove, with a rounded edge; outer lip plain within; aperture oblong—(Strombus dubius, Brander, 68.)— f. Sower. Min. Conch, t. cxv. f. 1, andt. cccxcvii.—London Clay.2. V. spinosa — Ovate-acute, ventricose, covered with large spines, extendinginto the longitudinal ribs, and a row of smaller spines near the upper edgeof the whorl ; whorls concave above, transversely striated below ; apertureovate, elongated; outer- lip plain within— (Strombus luctator, Brander, f. 56.)— Sower. Min. Conch, t. cxv. f. 2, 3, 4—London Clay.3. V. suspensa — Ovate, pointed, obscurely costated, transversely striated ;spire with a broad canal 4around it, bounded by an erect, flat, dentated crown ;base produced— (Murex suspensus, Brander,f. 70.)— Soiver. Min. Conch,t. cxv. f. 5 London Clay.4. "V. coslata—Ovato- fusiform, acute, costated, striated, with about threeplaits on the pillar— {Brander, f. 45.) Soiver. Min. Conch, t. ccxc. f. 1,2, 4London Clay.5. V. Magorum. — Ovato-fusiform, obtuse, costated, obscurelv striated;with many plaits upon the pillar.— Soiver. Min. Conch, t. 290. f. 3 LondonClay.6. V. Aihleta.— Rhomboidal, ventricose, acute, crowned with large spreadingspires ; base obscurely sulcated ; pillar with three unequal folds ; lip plainwithin.— (Strombus Ath. Braruler, f. 66.) Soiver. Min. Conch, t. cccxcvi. f. 1,2, 3.— London Clay.7- V. depuuperata — Ovato-rhomboidal, acute, costated ;crowned with oneseries of erect spines ;base sulcated ; pillar with one fold ; lip smooth within.— (Strombus luctator, Brander, f. 67,) Soiver. Min. Conch, t. cccxcvi. f, 4London Clay.8. V. amligua —Shell ovato-elongated ; acute, costated, transversely sulcated;costa? angular above; spire rough ; pillar with three plaits; lip plaitedwithin, its edge granulated, aperture narrow above.— (Strombus ambiguus,Brander, f. 69.) Soiver. Min. i.— Conch, t. cccxcix. f. London Clay.