MOLLUSCA. SOLENOSTOMATA. Voldta. 



VOLUTAD^. 



Gen. LXV. VOLUTA.— Pillar plaited, the anteal folds the 

 largest ; extremity of the canal emarginate. 



296. V. catenata. — Shell pellucid, white, with four spiral 

 bands of opake white spots, connected by rufous streaks. 



Mont. Test. Brit. 236. t. vi. f. 2 — Coast of Devon, Mr Swaimon, Dund- 

 bar, Mr Laskey, 



Length fths, breadth ith, 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 strong 

 and two faint folds. 



EXTINCT SPECIES. 



1. V. luctator. — Shell ovate-acute, covered with tubercular spines, termi- 

 nating longitudinal ribs, transversely striated or sulcated ; whorls concave 

 above, with a rounded edge ; outer lip plam within ; aperture oblong — 

 (Strombus dubius, Brander, f. 68.) — Sower. Min. Conch, t. cxv. f. 1, and 

 t. cccxcvii — London Clay. 



2. V. spinom. — Ovate-acute, ventricose, covered with large spines, extending 

 into the longitudinal ribs, and a row of smaller spines near the upper edge 

 of the whorl ; whorls concave above, transversely striated below ; aperture 

 ovate, 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.around it, bounded by an erect, flat, dentated crown ; 

 base produced — (Murex suspensus, Brander, f. 70.) — Sower. Min. Conch. 

 t. cxv. f. 5. — London Clay. 



4. V. costata — Ovato-fusLform, acute, costated, striated, with about three 

 plaits on the pillar. — [Brander, f. 45.) Sower. Min. Conch, t. ccxc. f. 1, 2, 4.— 

 London Clay. 



5. v. Magorum Ovato-fusiform, obtuse, costated, obscurely striated ; 



with many plaits upon the pillar. — Smver. Min. Conch, t. 290. f. 3 London 



Clay. 



6. V. Athleta. — Rhomboidal, ventricose, acute, crowned with large spread- 

 ing spires ; base obscurely sulcated ; pillar with three unequal folds ; lip plain 

 within.— (Strombus Ath. Brander, f. 66.) Sower. Min. Conch, t. cccxcvi. f 1 , 

 2, Z.— London Clay. 



7. V. depauperata. — Ovato-rhomboidal, acute, costated ; crowned with one 

 series of erect spines ; base sulcated ; pillar with one fold ; lip smooth within. 



— (Strombus luctator, Brander, f. 67,) Smver. Min. Conch, t. cccxcvi. f. 4 



London Clay. 



8. V. amUgua. — Shell ovato-elongated ; acute, costated, transversely sul- 

 cated ; costse angular above ; spire rough ; pillar with three plaits; Up plaited 

 within, its edge granulated, aperture narrow above. — (Strombus ambiguus, 

 Brander, f. 69.) Sower. Min. Conch, t. cccxcix. f. i.— London Clay. 



