286 EOCENE MOLLUSCA. 
The present species is found plentifully at Highgate, and I have dedicated it to my 
friend Mr. Wetherell, so long and so well known for his zealous labours in the London 
Clay, and his unrivalled collection of fossils from Highgate and the neighbourhood. 
Size-—Axis, 1 inch and 7-12ths; diameter, 6-12ths of an inch nearly. 
Localities.—Highgate, Holloway. 
No. 212. Prevrotoma rasciotata. Ff. #. Edwards. Tab. XXX, fig. 12, a, 6. 
P. testa elongata, fusiformi, sub-turritd, omnino spiraliter fasciolatd : spird elevata, in 
longitudine bi-trientes totius teste superanti: anfractibus planulato-convewis, sutura 
perspicud divisis, ad humeros obtuse carinatis ; marginibus posticis latissimis, sub-rectis, 
contra spiram expressis: fasciolis spiralibus confertis, crassis, rotundatis, sub-regularibus, 
lineis incrementi fortiter asperatis: aperturd ovato-oblongd, antice in canali longiusculo, 
patulo, exeunti ; labro aliforme, acuto ; sinu profundo, latiusculo, ad humerum collocato. 
Shell elongated, fusiform, sub-turreted, having the whole surface covered with 
narrow spiral bands; spire pointed, produced, fully equalling three fifths of the 
shell in length; whorls, seven or eight exclusive of the pullus, flatly convex on the 
sides, separated by a deep, perspicuous suture, and bearing on the shoulders a wide, 
slightly prominent keel, rounded on the upper surface, from which the spire derives 
its turreted appearance; the posterior margins are very wide, nearly straight, and 
extend up the spire almost to the keel on the preceding whorl; the spiral bands are 
‘numerous, thick, rounded on the upper surface, nearly regular, and much roughened, 
almost cancellated, by the coarse, prominent lines of growth. The aperture is of 
an oblong-oval form, and terminates in front in a wide, moderately long canal ; the 
outer lip is much arched, and presents at the shoulder a deep and rather wide sinus. 
Size.—Axis, 1 inch and 9-12ths; diameter, 7-]2ths of an inch nearly 
Localities.—Highgate, Railway Tunnel, Kilburn. 
No. 213. Pievroroma penticuLa. Basterot. Tab. XXX, fig. 7, a—i. 
PLEUROTOMA DENTICULA. Bast. 1825. Deser. Géol. du Bass. tert. Sud-ouest de la France, 
p. 63, t. 3, fig. 12. 
— -— Defr. 1826. Dict. des Sciences nat., vol. xli, p. 396. 
— — Grat. 1832. Tab. des Coq. foss., &c., de Dax, p. 320, No. 318. 
= = Grat. 1838. Catal. zool., &c., du Bass. de la Gironde, p. 46, 
No. 388. 
— _ Desm. 1842. Rev. de Pleurot., p. 47, No. 25. 
