GASTEROPODA. 19 
approximantibus. Ald magni, expansd, in digitos duobus productd, digitis parvis, caudd 
brevissima. 
Shell turrited ; whorls numerous, each with an acute mesial carina, the last whorl with 
two carine ; the edges of the carima undulate and are nodulated ; the whorls are trans- 
versely striated above the carina; beneath are two prominent striae, bordering the suture ; 
wing large and expanded, extended into digitations ; the digitations are small, the caudal 
termination very short. 
This elegant shell possesses a certain family resemblance, which places it near to several 
of our Great Oolite examples of the genus. ‘The acute carina reminds us of A. frifida, the 
nodules of 4. Aamus, and the general figure of the wing and caudal extremity of 2. 
paradowa ; the whorls are comparatively numerous and narrow, the mesial carina very 
prominent, and the junctions of the whorls strongly defined. 
Locality. The white stone of Eastcombs has furnished our only example. 
ALARIA ATRACTOIDES, Des?. sp. Plate III, figs. 7, 7a. 
PTrEROCERA ATRACTOIDES, Deslongchamps. Mém. Soc. Linn. de Normandie, vol. vii, 
p- 166, pl. 9, figs. 7, 8, 9. 
— — Desh. am. An. sans Vert., 2d Edit., 1843, tom. 9, p. 681. 
— — D’ Orb. Prod. Paléont., p. 302. 
A.“ Testa fusiformt, transversim striata ; striis alternis altioribus ; anfractibus bicarinatis 
_ (carina superiore majore) longitudinaliter plicato-nodosis, plicis remotiusculis, nodis quadratis, 
acutis, ultimo anfractu subgibbo ; caudd longd, incurvd.” (Deslongchamps.) Ald expansd 
in digitis trigonis quatervis vel quinque (digito superiort majori). 
Shell fusiform, transversely striated ; strize alternately elevated ; whorls twice carinated 
(the upper carina being the largest), longitudinally nodulated and plicated ; the plications 
remote, the nodules square and acute. The last whorl is large, the canal long and curved, ’ 
the wing expanded, having four and perhaps five triangular digitations, of which the 
upper one is the largest. 
We have three specimens of this rare shell, in one of which the wing is well developed, 
with the exception of the extremity of the lower digitation, which may be imperfect. 
Locality, The planking beds of Minchinhampton Common. Great Oolite (ca7//asse), 
Ranville, Normandy. (Des/.) 
ALARIA HEXAGONA. Plate II], fig. 8. 
A. Testé turritd ; anfractibus paucis (4), angulatis et nodulosis ; nodulis 6 hexagonis ; 
ultimo anfractu unicarinato, nodulosa, varicem ori oppositum gerente. Ald parva, cauda 
sublonga ; apertura contractd, ovatd ; labro sinistro tenui. 
Shell turrited ; apex obtuse; whorls few (4), prominently angulated and nodulated ; 
