90 MOLLUSCA FROM THE CRAG. 



1, ScALARiA Grcenlandica. Chenm. Tab. VIII, fig. 11 «, 11 b. 



TuKBO CLATHiius Grcenlandicus. Chemn. vol. xi, p. 155, t. 195, fig. 1878-79. 

 ScALAEiA siMiLis. J. Sow. Min. Conch, t. 16, 1812. 



— SUBULATA. Couthouy. Bost. Journ. Nat. Hist, ii, p. 93, pi. 3, fig. 4. 



— Gr(enlandica. Gould. Inv. of Massachus. p. 249, fig. 1/0, 1841. 



— SIMILIS. S. Wood. Catalogue 1842. 



Sc. Testa ehngato-turritd, imjjerforatd ; anfradihus ventricosis, contiguis, longitudi- 

 naliter costatis ; costis obtusis, interstitiis tramversim striatis, vel sulcatis ; anfractu ultimo 

 basl carinifcro ; aperfurd ovafo-circulari. 



Shell elongato-turreted, thick, strong, and imperforate ; volutions 9 — -10, ventricose 

 and contiguous, longitudinally costated ; costae obtuse, oblique, transversely striated, 

 or sulcated ; base of last volution carinated ; aperture subcircular. 



Axis, 1^ inch. 



Locality. Red Crag, Sutton. 



Mam. Crag, Bramerton and Bridlington. Recent, Coast of Greenland. 



This shell is rare in my cabinet as a Red Crag fossil, though, I believe, rather less 

 so in the more recent formation of the Mammaliferous Crag. In my Catalogue it was 

 considered distinct from the Greenland shell, but the examination of a greater number 

 of specimens from Norfolk (in which a considerable degree of variation is exhibited), 

 has induced me to alter that opinion. 



2. Scalaria varicosa. Lam. Tab. VIII, fig. 14. 



SuALARiA VARICOSA. Lam. Hist. Nat. des An. sans Vert. 2d edit. torn, ix, p. 74, 1835. 



— IIMBRIATA. Ency. Meth. pi. 451, fig. 4, a, b. 

 _ _ S. Wood. Catalogue 1842. 



Sc. Testd subulatd, iurritd, imperforatd; anfractibus contic/uis, costatis ; costis tenuibus, 

 incimbentibus, crenato-fimbriatis, creberrimis ; varicibus crassitiscuUs, irregulariter sparsis ; 

 transversim striatis, anfractu ultimo basi carinifcro. 



Shell tapering, turriculate, imperforate ; whorls contiguous, suture deep, covered 

 with numerous, thin, reflected, and fimbriated longitudinal costse, and obtuse varices 

 at irregular distances ; transversely striated, having an obtuse elevated keel around 

 the base. 



Axis, \\ inch. 



Locality. Cor. Crag, Sutton. Recent, Mediterranean. 



This shell is at present rare in my cabinet. My specimens correspond precisely 

 with a recent shell said by Mr. G. B. Sowerby, sen., to be from the Mediterranean, 

 and which appears to be Sc. fimbriata of Lamarck. 



The thickened varices sometimes form a continuous rib, running the whole way up 

 the shell, but they are in general irregular both in number and position. The elevated 

 transverse striae are about ten in number ; they are decussated by the small reflected 



