66 MOLLUSCA FROM THE CRAG. 



3. Cancellable costellifera. /. Sow. Tab. VII, fig. 21. 



Murex costellifer. J. Sow. Min. Conch, t. 119, fig. 3, 1818. 

 Cancellaria Couthouyi. Jay. Cat. of his Cab. 1839. 



— buccinoides. Couthouy. Bost. Jour, of Nat. Hist. vol. xi, p. 105, pi. 3, fig. 3. 



— granulata. Nyst. Coq. foss. de Belg. p. 479, pi. 39, fig. 14, 1844. 



— viridula. Loven. Ind. Moll. Scand. p. 15, 1846. 



C. Testa ovato-fusiformi, ventricosd ; spird acuminata ; anfractibus conveocis, longitudi- 

 naliter costellatis, transversim striatis ; costellis 12 — 15, granulatis ; in ultimo anfractu 

 ad basim evanescentibus ; aperturd ovatd ; columella triplicatd ; basi acuminata; canali 

 brevissimd. 



Shell ovato-fusiforra, with an acuminated spire ; whorls convex, obtusely costated 

 longitudinally; costge 12 — 15, generally obsolete upon the lower half of the body 

 whorl, transversely striated ; aperture acuminated at the base, with a very short 

 canal ; columella triplicate ; outer lip sharp. 



Axis, f- of an inch nearly. 



Locality. Cor. Crag, Sutton. 

 Red Crag, Sutton. 

 Mam. Crag, Bridlington. Recent, Coast of Massachusetts. 



This species first appears in the Coraline Crag, but my specimens from that 

 formation are few, small, and very imperfect ; it is abundant in the bed above it. It 

 is in all probability the same as the American species. The ribs extend as far as the 

 junction of the succeeding volution, giving the spire a costated appearance ; the striae 

 or ridges are few, and are carried over the ribs, and the left lip is generally reflected 

 over the umbilicus ; and the columella has three folds, the upper one obsolete, some- 

 times invisible ; the lower one forms the edge of the canal ; outer lip sharp, and 

 generally free from denticulations, although the ridges are sometimes visible within. 

 This species is constant in its character, and presents very little variation in form ; 

 the costse are generally invisible on the base of the body whorl, and in one or two 

 specimens they are imperceptible upon the spire. 



Moller has described the species (Ind. Moll. Groenl.) under the name Admete 

 (Kroger) crispa ; it differs from the true Cancellarias, and might probably form a good 

 generic type. 



4. Cancellaria subangulosa. S. Wood. Tab. VII, fig. 20, a — b. 

 Cancellaria subangulosa. S. Wood. Catalogue 1842. 



C. Testa minima, fusiformi, spird elevatd, apice acuto, longitudinaliter costellatd, 

 transversim striata, reticulata; anfractibus quinque, superne subangulatis ; canali brevissimd; 

 columella triplicatd. 



Shell small, fusiform, with an elevated spire, and acute apex, longitudinally 

 costulated, and transversely striated ; volutions five, subangular at the upper part ; 



