SEARLESIA RAVNI. 359 



name of Metzgeria alba. Mr. Friele found this species sparingly as a recent shell 

 along the Norwegian coast from Lindesnaes to 0xfiord, at depths from 97 to 191 

 fathoms, reporting it also from the Faroe Channel. It was dredged during the 

 Talisman expedition off the Azores. A friendly reviewer suggests, moreover, that 

 as the generic name Triton, de Montfort (1810) used by me on p. 120, had been 

 previously adopted by Linnaeus for a Cirriped — Lampu*ia, Schumacher, should 

 take its place. 1 



Genus SEARLESIA, F. W. Harmer {continued from p. 147). 

 Searlesia Ravni, F. W. Harmer. Plate XIV, figs. 15—17 ; Plate XLIV, fig. 21. 



1877-9. Fusus Waelii, S. V. Wood, Quart. Jouru. Geol. Soc, vol. xxxiii, p. 120, 1877; Mon. Crag- 

 Moll., 2nd Suppl., p. 9, pi. i, figs. 10a— 10c, 1879. 

 1890. Fusus Waelii, C. Eeid, Plioc. Dep. Brit., p. 245. 

 1914. Searlesia Ravni, F. W. Harmer, Plioc. Moll. Grt. Brit., pt. i, p. 142, pi. xiv, figs. 15 — 17. 



Remarks. — In his 2nd Suppl. (op. cit.) Wood figured several specimens from 

 Boyton, presumably of Coralline Crag age, identifying them, though with some 

 hesitation, with Fusus Waelii, Nyst, a characteristic form of the Upper and Middle 

 Oligocene of Belgium, Denmark and northern Germany, and I have obtained some 

 others at Oakley corresponding with Wood's shell. Neither the Boyton nor the 

 Oakley fossils present any obvious appearance of being derivative, and it seems 

 improbable that such a distinctive Oligocene species should have continued to 

 exist in the North Sea region as late as the Coralline, still less as the Red Crag 

 period. I am inclined therefore rather to refer these Crag shells to that formerly 

 described by me as Searlesia Ravni. 



In the Wood collection at the Norwich Castle Museum there are some specimens 

 from the Middle Oligocene of Belgium labelled Fusus Waelii, one of which I now 

 figure, together with another of the Oakley shells for comparison. They have a 

 superficial resemblance, but I do not think they are the same. 



Judging from the figures of the Oligocene Fusus Waelii given by Beyrich, 2 

 von Koenen, 3 and more recently by Drs. Ravn 4 and Harder, 5 that species seems to 

 have been a rather variable one, some of its varieties being more distinctly fusiform 

 than my Belgian specimen, with a longer and nearly straight canal and sculpture 

 different from that of the Crag shells. For these reasons I suggest that the 



1 Geol. Mag. [6j, vol. iii, p. 473. 



2 Zeitschr. Deutsch. Geol. G-esellsch., vol. viii, p. 57, pi. v, figs. 2, 3, 1856. 



3 Palaeoutographica, vol. xvi, p. 76, pi. vi, fig. 2, 1867. 



1 Mem. Acad. Roy. Sci. Danemark [7], vol. iii, p. 326, pi. vi, figs. 4, 5, 1907. 

 5 Damn. geol. Undersdgelse [2], No. 22, p. 81, pi. vi, figs. 24—27, 1913. 



47 



