22 MOLLUSCA .FROM THE GREAT OOLITE. 



ALARIA PARVULA. Plate III, fig. 12, IZb. 



A. Testdparvd, furritd; anfractibus quinque convexis, angmtatis, lavibits, ultimo planato, 

 striato; striis transversis, crebris, acutis, subcrenulatis ; caudd brevissimd ; aid ? 



Shell small, turreted, volutions (5) convex, narrow, smooth, the last volution flattened, 

 striated, striae transverse, closely arranged, acute, and slightly crenulated ; the canal nearly 

 obsolete ; wing unknown. 



Locality. The planking of Minchinhampton Common has furnished only one well- 

 preserved specimen with which we are acquainted, it does not exceed 6 lines in length ; 

 the whorls are very narrow and convex, the striae being visible only upon the body whorl. 



ALARIA? CIRRUS, Desl. sp. Plate III, figs. 13, 13a. 



ROSTELLARIA CIRRUS, Deslongchamps. 1842. M6m. Soc. Linn. Normandie, vol. vii, 



p. 178, pi. 9, f. 26. 



Desk. Lam. An. sans Vert., 2d Edit., torn. 9, p. 668. 

 PTEROCERA CIRRUS, D'Orb. 1850. Prod. Pal6ont., p. 302. 



A. Testa turritd, transversim striatd, qpice acuminate; anfractibus medio carinatis, ultimo 

 inflate, bicarinato ; carind superiori eminentiori, gibbum transverse ollongum ori oppositum 

 yerenti : aid brevissimd, in estate juniori monodactyld, deinde ((state progredienti) didactyld, 

 digitis longis, divaricatis, tenuibus, trigonis. Caudd longissimd, recta, apice incurvo. 

 (Deslongchamps.) 



Shell turreted, apex pointed, transversely striated, whorls carinated in the middle, the 

 last whorl inflated, having two carinae ; the first carina being the most prominent. A 

 transverse prominence is placed opposite to the aperture ; the canal is long and straight, 

 except the extremity, which is curved. 



A single specimen, in which the last whorl is imperfect, is all we have to refer to ; the 

 form, however, is unequivocal ; the spire is unusually short and ventricose, as compared 

 with other examples of the genus, and in the stage of growth which our specimen exhibits, 

 had not acquired the large digitations and caudal extremity proper to a later period. 



Locality. Minchiuhampton Common ; it must be referred to some of the shelly beds 

 beneath the planking ; rare. Great Oolite, Ranville, Normandy. (Desl.} 



Family MURICID.E. 

 Fusus, Lam. 1801. 







Shell fusiform or subfusiform, ventricose in the middle, with an elevated spire, volutions 

 convex, generally costated or striated ; aperture ovate, terminating anteriorly in a more or 

 less elongated canal, outer lip entire, sharp ; columella smooth. 



