VOLUTOPSIS LARaiLLIERTI. 153 



1872. Fxisus LarcjilUerti, A. aud R. Bell, Proc. Geol. Assoc, vol. ii, p. 197. 



1872. Trophon Norveglcus, S. V. Wood, Mon. Crag Moll., 1st Suppl., p. 177, tab. v, fig. U\ 



1881. Neptunea Lanjillierti, Kobelt, Martini uud Ciiemnitz, Conch. Cab., ed. 2, vol. iii (Purpiiraceae), 



p. 103, pi. XXXV, fig. 1. 

 1912. Volutopsis norvecjica, var. Larcjillierti, Dautzenberg et Fischer, Camp. Scient. Pr. Monaco, 



vol. xxxvii (MoUusques), p. Q&. 



Specific Characters. — Shell rather thin, elongato-oblong ; spire rapidly 

 decreasing in size, terminated by a large rounded bulb ; whorls convex, sometimes 

 with obscure longitudinal plications and faint spiral striae, the last whorl much 

 the largest, two-thirds the total length ; suture deep ; mouth oblong, angulate 

 above ; canal short ; outer lip thin, expanded. 



Dimensions. — L. 75 — 90 mm. B. 36 — 38 mm. 



Distribution. — Recent : Newfoundland, Greenland, Iceland, Spitzbergen. 



Fossil: Waltonian Crag: Little Oakley. Newbournian : "VVal- 

 dringfield. Butleyan : Shottisham Creek (A. Bell). 



Pleistocene : UddQvalla. 



Remarks. — The imperfect specimen from the "Waltonian Crag at Little Oakley 

 here figured corresponds with the Newfoundland shell described by Petit de la 

 Saussaye under the name of Fnsus LargilUerti, the spire of which is longer than 

 that of the typical V. norvegica. i 



I have some specimens in my collection of a somewhat similar form from 

 Uddevalla which Jeffreys, in his British Association paper of 1863 (p. 77) on the 

 Upper Tertiary fossils of that place, called Fusns Tiirtuni, but afterwards, in the 

 British Conchology, vol. iv, p. 331, Fusus LargilUerti. 



In 1870 Mr. Alfred Bell identified a fossil he had obtained from the Red Crag 

 at Sutton with the latter species, and another was figured by Wood in his first 

 Supplement, tab. v, fig. 14% as T. norvegicus. The last seems, however, to belong to 

 the present species, although it shows longitudinal plications which do not appear 

 on the shell figured by Petit.^ One of my specimens from Uddevalla, how^ever, is 

 indistinctly plicated in a similar manner. 



The occurrence of V. LargilUerti in the English Crag affords another instance 

 of the connection of the Pliocene mollusca of the east of England with the Recent 

 fauna of the western part of the North Atlantic. 



MM. Dautzenberg and Fischer regard our shell as a form of V. norvegica, 

 considering that they are noAV connected by intermediate varieties. It seems, 

 however, that the two had acquired their distinctive characteristics at an early 

 stage of the Crag epoch. 



' This fossil, now in the Ipswich Museum, is not accurately represented in Wood's figure The 

 plications are not so prominent as there represented. 



20 



