174 PLIOCENE MOLLUSCA. 



excavated below ; ornamented bj nine to twelve strong, rounded, longitudinal 

 ribs, which die out towards the base of the shell, and by wavy spiral ridges of 

 unequal size, which become strongly oblique at the back of the canal ; suture 

 deep ; spire elongate, regularly diminishing in size ; mouth oval, contracted below ; 

 canal long, straight, subtubular. 



Dimensions. — L. 70—00 mm. B. 24 — 27 mm. 



Distrihafion. — Not known living. 



Fossil : Cranstal Point, Isle of Man. Lower Pliocene : northern 

 Italy ; Rhone Valley. LTpper Pliocene : Sicily. 



Remarls. — This is one of the group of fossils found by the Rev. S. X. Harrison 

 in the glacial drift of the Isle of Man, which point to the former existence in the 

 basin of the Irish Sea of deposits of pre-Pleistocene age. 



It was reported by Bellardi in 1872 from deposits at Albenga and elsewhere, 

 then thought to be Upper Miocene, but now regarded by Prof. Sacco and others as 

 Lower Pliocene (Piacentino). The Miocene shell described by Homes as F. longi- 

 rostris was considered by Bellardi a different species. 



The specimen here figured is from Jermyn Street. Mr. A. Bell has recently 

 received another, imperfect, from the Rev. S. N. Harrison. Both of them were . 

 obtained at Cranstal. 



Fusus lamellosus, Borson. Plate XIV, fig. 24. 



1821. Fnsns lamellosus, Borson, Mem. Accad. Tor., vol. xxvi, p. 817, pi. i, fi?. 14. 



1856. Fusus lamellosus, Homes, Foss. Moll. Tert. Wieu, vol. i, p. 289, pi. xxxi, fig. 16. 



1872. Fusus lamellosus, Bellardi, Moll. Terr. Terz. Piem., pt. i, p. 142, pi. ix, fig. 17. 



1874-75. Fusus lamellosus, Seguenza, Boll. K. Coui. Geol. Ital., vol. v, p. 278, 1874: vol. vi, p. 282, 



1875. 

 1890. Fusus lamdlosus, C. lieid, Plioc. Dep. Brit., p. 245. 

 1904. Fusus lamellosus, Sacco, Moll. Terr. Terz. Piem., pt. xxx, p. 26. 



Specific Characters. — Shell turreted, elongate ; apex acute ; whorls short, 

 decidedly convex, with eight or nine prominent longitudinal costoe, and numerous 

 fine wavy spiral ridges ; body-whorl excavated, less than half the total length ; 

 suture deep ; mouth oval, ending in a straight, narrow and rather short canal. 



Dimensions. — L. 20 — 80 mm. B. 10 mm. 



DisfrihutioH. — Not known living. 



Fossil: Pliocene: Lenham. Coralline Crag (uni(iue). Miocene: 

 Vienna basin, Italy. Pliocene : Albenga. Upper Pliocene and Pleistocene of Sicily : 

 Oliveri, Altavilla, Orciano, and elsewhere. 



Remarks. — This species, characteristic of the Miocene and Pliocene deposits of 

 the Continent, which occurs also, according to Seguenza, with Ci/prina ishnulira, 

 and other northern forms in beds probably equivalent to the Pleistocene or Upper 



