History of British animals - University of Guam Marine Laboratory

336 MOLLUSCA. SOLENOSTOMATA. Tornatella.Gen. ANCILLARIA.— Shell oblong, subcylindrical;aperturelongitudinal,effuse ;lineseparatingnot canaliculated.1. A. aveniformis Oval, elongated, smooth ; spire acute ; varix with twoplaits; extension of the inner lip short; aperture little more than half thelength of the shell, inner lip extended over about one-third of the exposedpart of each whorl ; surface shining.— Sower. Min. Conch, t. xcix. middlefigures.—London Clay.2. A. turritella.— Subcylindrical, with an acute subturrited spire, minutelyand transversely striated ; upper part of each whorl shining, middle minutelydecussated ;an obscure spiral sulcus near the varix ; pillar with threeplaits, and one deep sulcus—Sower. Min. Conch, t. xcix. larger figures.—London Clay.3. A. subulata.— Subulate, smooth and shining; spire and base polished ;spire elongated, acute ;the varix at the base of the pillar striated.— Sower.Min. Conch, t. cccxxxiii—London Clay and Upper Marine Formation.TORNATELLA DiE.Gen. LXIX. TORNATELLA.— Body-lip simple;separatingline canaliculated by the inflection of the edge of thewhorl ; with a corneous lid.301. T. tornatilis.— Whorls eight; spirally striated; the pillarwith one fold, near the retral extremity.Buccinum parvum,List. Conch, t. dcccxxxv. f. 58—Voluta tornatilis,Linn. Syst.i. 1187. Mont. Test. Brit. 231—In Sandy bays.Length |ths of an inch; purplish red, with two white spiral bands; bodywhorllarge, the others forming a short conical spine ; aperture contracted behindby the projection of the body-whorl outer ;lip thin, slightly rounded.EXTINCT SPECIES.1. T. Noes.— Oval, transversely striated ;with one plait near the extremityof the pillar stria; ; equidistant, numerous, impressed, obscurely decussated;lip sulcated within—Acteon Noa?, Sower. Min. Conch, t. ccclxxiii—In Crag,2. T .cuspidahis.— Subcylindrical, smooth; spire immersed, cuspidated;one plait upon the pillar ; aperture nearly the whole length of the bodywhorl A. cusp. Sower. Min. Conch, t. cccclv.— Oolite at Ancliffe.3. T. acutus.— Subcylindrical, smooth ; spire conical acute ; one plait uponthe pillar.— A. acutus, Sower. Min. Conch, t. cccclv. f. 2. — At Anclilte.Probably the young of the preceding.4. T. crenatus.— Ovate, elongated, spirally striated ; pillar minutely crenated.—A. cren. Sower. Min. Conch, t. cccclx. f. 1 London clay.5. T. striatals.— Ovate, acute, spirally striated ; pillar without a plait ;stricc not punctated.— A, str. Sower. Min. Conch, t. cccclx. f. 2.— Cray.