TROPHON (TROPHONOPSIS) BARVICBNSIS. 357 



Distribution. — Fossil: Wexford gravels (additional). 



Remarks. — The shell described on p. 201 from a Manxland specimen as a 

 variety of T. trvnratns may be regarded, I now think, as specifically distinct, under 

 the name suggested for it by Mr. A. Bell of Trophon Harmeri. We have noticed 

 a few specimens of it in our Wexford collections. 



The affinities of this shell are not so much with T. truncatus as with the 

 T. decoratus of Locard, a shell described in the ' Exped. scient. du Travailleur et 

 du Talisman,' vol. i, p. 340, pi. xvii, fig. 5. 1897, of which the sculpture is similarly 

 clathrated. 



Trophon (Trophonopsis) barvicensis (Johnston). Plate XL, figs. 29, 30. 



1818. Murex barvicensis, Johnston, Edin. Phil. Journ., vol. xiii, p. 221. 



1853. Trophon Barvicensis, Forbes and Hanley, Brit. Moll., vol. iii, p. 442, pi. cxi, figs. 5, 6. 

 1867-71. Trophon barvicensis, Jeffreys, Brit. Conch., vol. iv, p. 318, 1867 ; vol. v, p. 218, pi. lxxxiv, 

 fig. 5, 1869 ; in Prestwich, Quart. Journ. Geol. Soc, vol. xxvii, p. 492, 1871. 



1871. Trophon barvicensis, A. Bell, Ann. Mag. Nat. Hist. [4], vol. vii, p. 355. 



1872. Trophon barvicensis, S. V. Wood, Mou. Crag Moll., 1st Suppl., p. 27, pi. vi, fig. 20. 

 1872. Trophon barvicensis, A. and R. Bell, Proc. Geol. Assoc, vol. ii, pp. 210, 214. 



1878. Trophon Barvicensis, G. O. Sars, Moll. Reg. Arct. Norv., pp. 248, 362, pi. xxiii, fig. 13. 



1887. Trophon Barvicensis, Kobelt, Icon, schalentrag. europ. Meeresconch., vol. i, p. 28, pi. vi, 



figs. 16, 17. 



1890. Trophon barvicensis, Carus, Prod. Faun. Medit., vol. ii, p. 383. 



1901. Trophon barvicensis, Friele og Grieg, Norske Nordhav. Exped. (Mollusca), pt. iii, p. 97. 



1901. Trophon mtcricatus, var. barvicensis (Conch. Soc. list), Journ. Conch., vol. x, p. 22. 



1901. Trophon barvicensis, Br0gger, Norges Geol. Unders^gelse, no. 31, p. 658, pi. xviii, fig. 4. 



1912. Trophon (Trophonopsis) barvicensis, Dautzenberg et Fischer, Camp. Scient. Pr. Monaco, 



vol. xxxvii (Mollusques\ p. 157. 



Specific Characters. — Shell small, slender, thin, fusiform, turreted; whorls 6 — 7, 

 squarely angulate above, the last much the widest, with the canal two-thirds the 

 total length, excavated below ; ornamented by prominent lamellar and more 

 or less spinous ribs, extending to the suture but hardly to the canal, clathrated 

 by fine spiral ridges ; spire elongate, regularly diminishing in size towards the 

 apex ; suture deep ; mouth pyriform, angulate above and where it joins the canal ; 

 outer lip sometimes upturned with a sharp point or spine below the suture ; canal 

 rather long, narrow, nearly straight. 



Dimensions. — L. 8 — 12 mm. B. 4— 5 mm. 



Distribution. — Recent: British coasts from Yorkshire and the Dogger bank to 

 the Shetlands, west of Scotland, north and east of Ireland. Norway from the 

 Christiania fiord to Finmark. Lofoten Islands. West Atlantic as far south as 

 Morocco. 



Fossil : Waltonian Crag : Walton-on-Naze, Little Oakley. New- 

 bournian : Waldringfield, Shottisham. Wexford — Rosslare, Blackwater. 



