66 MOLLUSCA FROM THE CRAG. 



3. Cancellaria costellifera. ./. Soiv. Tab. VII, fig. 21. 



MuREX cosTELLiFER. /. Sow. Miu. Coiich. t. 119, fig. 3, 1818. 

 Cancellaria CouTHOUYi. Jmj. Cat. of his Cab. 183!). 



. — BUCCINOIDES. Couthouy. Bost. Journ. 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. Lovhi, lud. Moll. Scand. p. 15, 1846. 



C. Testa ovaio-fusiformi, ventricosd ; spird acuminaid ; anfradibus convexis, longitudi- 

 naliter costcUatis, transversim striatis ; costellis 12 — 15, granulaik ; in ultimo unfractu 

 ad basim evanescentibus ; aperturd ovatd; columelld triplicatd ; basi actimiiiatd ; canali 

 brevissimd. 



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

 longitudinally ; costse 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. Crasr, Bridlinaton. Recent, Coast of Massachusetts. 



This species first appears in the Coralhne 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. Tlie ribs extend as far as the 

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

 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. 



MoUer has described the species (Ind. Moll. Groenl.) under the name Admetc 

 {Kroner) crispa ; it differs from the true Cancellarise, 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. Testd minimd, fusiformi, spird elevatd, upice ucuto, lon(/itiaUnaliter costellatd, 

 transversim striatd, reticulatd ; anfractibus quinque, superne suban^idatis; canali brevissinui; 

 columelld triplicatd. 



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

 and transversely striated ; volutions five, subangular at the upper part ; aperture ovate. 



