140 PLIOCENE MOLLUSC A. 



I figure a typical specimen of this form from Iceland, together with others 

 from Oakley and Sutton, which, although not absolutely the same, come nearer to it 

 than to the other Crag varieties of >S'. cosfifer; the Sutton shell (fig. 10) is from the 

 Sedgwick Museum at Cambridge. 



Var. monensis, nov. Plate XIII, fig. 0. 



1894. Fusus Forhesi, Kendall, Jouni. Isle of Man Nat. Hist. Soc, vol. i, p. 4-19, pi. i, fig. 4. 



Dhnen.iions. — L. 38 mm. B. 21 ram. 



Distribution. — Not known living. 



Fossil: Cranstal Point, Isle of Mau. 



Befnarks. — The fossil figured under this name is one of those in the Jermyn 

 Street Museum which have been grouped there as varieties of F. Forhesi. It 

 appears to agree with fig. 4 in Prof. Kendall's plate. 



It differs materially from Prof. Forbes' type of that species, however, corre- 

 sponding more nearly with S. costifer of the Crag, of which I regard it as a 

 geographical variety, tliongh the spiral sculpture is coarser than in any specimen 

 of the latter known to me from the East Anglian deposits. It has not the internal 

 denticulation of the outer Hd charactei-istic of S. Forhesi. 



Searlesia Forbesi (Strickland). Plate XIV, figs. 1 — 3. 



1838. Fusus sp., Forbes, Malac. Monen., p. 60, pi. iii. fig. 1. 



1846. Fustis Forhesi, Strickland, Proc. Geol. Soc, vol. iv, p. 8. 



1846. Fusus Forbesi, E. Forbes, Mem. Geol. Surv., vol. i, p. 425. 



1894. Fusus Forhesi, Kendall, Journ. Isle of Man Nat. Hist. Soc, vol. i, p. 419, pJ. i, fig. 7. 



1903. Fusus Forhesi, Lamplugb, Mem. Geol. Surv., Isle of Mau, p. 475, fig. 84 (p. 336). 



Specific Characters. — Shell strong and solid, fusiform; whorls Imt slightly 

 convex, regularly diminishing in size, the last two-thirds the total length ; orna- 

 mented by about eleven prominent longitudinal ribs, somewhat oblique, reaching 

 the base of the shell, and by rather coarse spiral lines ; suture slight ; mouth ovate, 

 angulate above ; outer lip thickened by the labial rib, which is bevelled internally 

 and denticulated ; canal short, turning slightly to the left. 



Dimensions. — L. 34 mm. B. 17 mm. 



Distribution. — Not known living. 



Fossil : Isle of Man, Cranstal Point and elsewhere. Waltonian 

 Crag : Little Oakley. 



Remarhs. — 'For many years the identity of the shell described and figured by 



