90 MOLLUSCA FROM THE CRAG. 



1. Scalaria Grcenlandica. Cliemn. Tab. VIII, fig. 11 a, 11 b. 



Turbo clathrus Grcenlandicus. Cliemn. vol. xi, p. 155, t. 195, fig. 1878-79. 

 Scalaria similis. J. Sow. Min. Conch, t. 16, 1812. 



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



— Grcenlandica. Gould. Inv. of Massachus. p. 249, fig. 170, 1841. 



— similis. S. Wood. Catalogue 1842. 



Sc. Testa elongato-turritd, imperforatd ; anfractibus ventricosis, contiguis, longitudi- 

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

 bast carinifero ; aperturd ovato-circulari. 



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

 tricose and contiguous, longitudinally costated ; costce obtuse, oblique, transversely- 

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



Axis, \\ 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. Scalaeia vaeicosa. " Lam, Tab. VIII, fig-. 14. 



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



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



— — S. Wood. Catalogue 1842. 



Sc. Testa subulata, turritd, imperforatd ; anfractibus contiguis, costatis ; costis tenuibus, 

 incumbentibus, crenato-fimbriatis, creberrimis ; varicibus crassiusculis, irregulariter sparsis ; 

 transversim striatis, anfractu ultimo basi carinifero. 



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

 with numerous, thin, reflected, and fimbriated longitudinal costas, 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 pre- 

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

 terranean, 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 strise are about ten in number ; they are decussated by the 



