History of British animals - University of Guam Marine Laboratory

Pyrula. MOLLUSCA. MURICID/E. 347(Strombiformis reticulatus, Da Costa, Brit. Conch. 117- t. viii. f. 13.)—Murex reticulatus, Pult. Dorset. 43. Mont. Test. Brit. 272 —Insandy bays, but rare.Length |ths of an inch, breadth upwards of |th ; brown ; whorls strong,slender ; separating line minute, above which is a broad furrow, apparentlymarking the division of the whorls ; base with obsolete spiral grooves ; apertureovate, canal short and shallow.326. T. suhdaia.— Whorls fifteen, with two spiral rows ofbeads divided by a depressed line.Murex sub. Mont. Test. Brit. Sup. 115. t. xxx. f. 6—Sound of Mull,near Scalasdale, Mr Laskey.Length |ths of an inch ;whorls slender, little raised, denned by a purplishbrownspiral line ;spiral furrows longitudinally striated ; base smooth, andof a dark brown colour ; aperture small.— 327. T. perversa.— Whorls ten, sinistral, tuberculated.Turbo Turritus perversus, Walk. Test. Min. Rar. 13. t. xi. f. 48—Murexadversus, Mont. Test. Brit. 271-— Turbo reticulatus, Don. Brit.Shells, t. 159.— On different places of the coast, rare.Length half an inch, breadth |th ; brown; whorls with three spiral rowsof tubercles, the middle row the smallest ;base with two or three spiralridges ; aperture oval, canal deep.EXTINCT SPECIES.1. T. cornucopia.— Turrited, subulated, punctated;whorls very numerous,superior ones with three or four unequal tuberculated carina?, central onestuberculated above, undulated below, with four or five transverse furrows ;lowest whorls crossed by nine or ten elongated tubercles ;aperture quadrate ;columella plaited; beak short, curved—Cerithium corn. Sower. Min. Conch,t. cxxxviii. f. 1, 2. 4—London Clay.2. T. gigantca. Turreted extremely long, spirally striated, minutelypunctated ; upper parts of the whorls tuberculato-nodose—Cerithium gig.Sower. Min. Conch, t. cxxviii. f. 2—London Clay.3. T. cincta Subulate conical, with three rows of nearly equal granulesupon each whorl, and two carina? near the edge of the base ; suture subcanaliculated; pillar with one plait Potamides cinctus, Sower. Min. Conch.t. cccxl. f. 1 Upper Marine Formation, Headon Hill.Gen. LXXVIII. PYRULA.— Spire short,body-whorl ventricoseretrally;right margin of the canal patulous.328. F.carica.— Shell pyramidal, heavy;body-whorl witha single spiralrow of triangular processes.List. Conch, t. dcccIxxx. f. 3. 6—Murex carica, Tnrt. Conch. Diet. 86.t. viii. f. 2G Coast of Ireland.Length 6 inches, breadth 4 ; reddish-grey ; irregularly striate, and somewhatscaly lengthwise, near the base a few spiral stria?; whorls six, hardly raised,with a row of seven or eight protuberances on the last, decreasing into tuberclesin the upper ones, the upper whorls are spirally striate ; outer lipwith the margin angular at the termination of the row of hollow protuberances; pillar-lip polished. Dr Turton states, that a pair of these magnifi-