552 PLIOCENE MOLLUSCA. 



Upper Pliocene — Astiano : Orciano, Val d'Era, Bologna, Livorno. Sicily — 

 Altavilla. 



Remarhs. — The specimen figured by Wood in his 1st Supplement under this 

 name seems to have been sent to him by the late H. B. Woodward as having been 

 obtained from the Coralline Crag in the neighbourhood of Orford, probably from 

 Gedgrave. It is a very different form from that next described, being larger, 

 stronger and less delicately sculptured. As I cannot trace the original, I have 

 figured a typical example of »S\ cancellata from the Pliocene of Altavilla near 

 Palermo which seems to me to correspond satisfactorily with Wood's Orford shell 

 and may be identified with it. It is evidently a very rare form in the Crag. 



Scala (Clathroscala) Woodi, Deshayes. Plate XLVIII, figs. 10, 11. 



1842—48. Scalaria decussata, S. V. Wood, Ann. Mag. Nat. Hist. [1], vol. ix, p. 535, 1842; S. can- 

 cellata, Men. Crag Moll., pt. i, p. 95, pi. viii, fig. 22, 1848. 

 1864. Scalaria Woodi, Deshayes, Descrip. Aiiini. sans Vert., vol. ii, p. 339. 



1871. Scalaria Woodi, Nyst, Ann. Soc. nialao. Belg., vol. vi, p. 146, no. 357. 



1872. Scalaria cancellata (Wood, not Brocclii), Jeffreys in Prestwicli, Quart. Journ. Geo). Soc, 

 vol. xxvii, p. 145. 



1872. Scalaria cancellata, A. and R. Bell, Proc. Greol. Assoc, vol. ii, [). 204. 



1891. Clathroscala cancellata, var. Woodi, Sacco, Moll. Terr. Terz. Pieni., pt. ix, p. 85. 



1912. Clathroscala Woodi, Cossniann, Ess. PaU'ocouch. conipar., vol. ix, p. 71. 



1919. Scala {Clathroscala) Woodii, de Boury, MS. 



Specific Characters. — Shell much smaller than the typical S. cancellata, elon- 

 gate, tapering to a fine point, thin and fragile ; whorls 9 or 10, slightly convex ; 

 ornamented with fine longitudinal costae and delicate transverse strise ending 

 abruptly at the peristome ; mouth subcircular ; peristome continuous. 



Dimensions. — L. 12 — 14 mm. B. 4 — 5 mm. 



Distribution. — Not known living. 



Fossil : Coralline Crag : Sutton, Gomer. 



Remarlcs. — The present form was originally identified by Wood with 8. can- 

 cellata, Brocchi, but this view has not been generally adopted, though Prof. Sacco 

 considered our shell might be a variety of that species. By most authorities it has 

 been regarded as specifically distinct under the name 8. Woodi, proposed for it in 

 1864 by Deshayes. It is smaller and more fragile than S. cancellata, with very 

 delicate sculpture. Wood stated that he had obtained many specimens of it at 

 Sutton, all of them being more or less broken. 



The very different fossil described in the last paragraph, figured by Wood in his 

 1st Supplement, was recognised in 1891 by Prof. Sacco as a typical 8. cancellata. 

 It does not appear that this specimen was known to Deshayes, Nyst or Jeffreys. 

 8. Woodi was not noticed by anyone prior to Sacco in the paper and on the 

 date named above. 



