OCINEBRA ERINACEA. 341 



Coralline Crag of Boyton, and belongs to the York Museum. It presents no 

 appearance of derivation, as might be expected in a fossil from that horizon, ;ind 

 is, I believe, a genuine Crag shell. In form and sculpture it resembles a recent 

 Australian species, Pteropurpura triform is, an example of which T have received 

 from my friend, M. Dautzenberg. Tn that shell, however, which is considerably 

 larger, the varices are continuous. The latter, moreover, is not unlike an Oligocene 

 form, Murex tristichus, Beyrich, 1 which is figured by Dr. Ravn under that name. 3 

 This also appears to belong to the Pteropurpura group. 



Genus OCINEBRA, Leach (continued from p. 125). 

 Ocinebra erinacea (Linne). Plate XII, figs. 12 — 11; Plate XXXV, fig. 17. 



1846. Murex erinaceus, Loveii, K. Svensk. Vet. Akad. Fork., vol iii. p. 86. 



1864. Murex erinaceus, S. P. Woodward in White's Hist, of Norfolk, ed. 3. p. 117. 



1871-92. Murex erinaceus, A. Bell, Geol. Mag , vol. viii, p. 453, 1871 ; Rep. Brit. Assoc. (Bath), 



p. 135, 1888; (Leeds), pp. 412, 414, 417, 420, 1890; Proc. Roy. Phvs. Soc. Edinb., vol. xii, p. 26, 



1892 ; Rep. Yorks. Phil. Soc. pp. 63, 70, 71, 73, 1892. 

 1872. Murex erinaceus, A. aod R. Bell, Proc. G-eol. Assoc, vol. ii, p. 213. 

 1872-1914. Murex erinaceus, F. W. Harmer, Trans. Norf. Norw. Nat. Soc, vol. i, pt. 3, p. 46, 1872 ;. 



Ocinebra erinacea, Plioc Moll. Grt. Brit., pt. i, p. 124, pi. xii, figs. 12-14, 1914. 

 1874. Murex erinaceus, Darbishire, Quart. Journ. Greol. Soc, vol. xxx, p. 40. 

 1890. Murex erinaceus, C. Reid, Plioc. Dep. Bi it., p. 247. 



Distribution. — Fossil : (additional) Worden, Largo Bay, Wexford, Balbriggan 

 Bay, Belfast (Boulder clay), Bstuarine clays of N. E. Ireland. Holocene : Portrush. 



Remarks. — This common and recent British species is very rare in the East 

 Anglian Crag, but is widely diffused in our British Pleistocene deposits, having 

 been recorded also from many such localities in Ireland. I have recently received 

 a number of specimens from Father Codd found by him in the Wexford gravels, 

 one of which I now figure. They are generally shorter in the spire than those 

 now found on our coasts. Their occurrence at Wexford is interesting. As a 

 British fossil the distribution of 0. erinacea is characteristically Pleistocene rather 

 than Pliocene ; it is one of the species which give to the greater part of the molluscan 

 fauna of Wexford a comparatively recent character. Although it occurs in some of 

 our glacial deposits, its distribution is southern rather than northern. Its most 

 northern range as recent seems to be the Cattegat (Loven). It has not been 

 recorded as a fossil from the Christiania fiord or any other northern locality. 



1 Zeitschr. Deutsch. Geol. Geseli., vol. vi, p. 746, pi. xvi, fig. 1, 1854. 



2 R. Danske, Vid. Selsk. Skrift. [7], vol. iii, p. 318, pi. v, fig. 10, 1907. 



