148 PLIOCENE MOLLUSCA. 



Geims PARASIPHO, Dautzenberg and Fischer, 1912. 



Parasipho Kroyeri (Moller). Plate XV, figs. 4, 5. 



1842. F71SUS Kroyeri, Moller, Ind. Moll. Grcenl., p. 15. 



1872. Buccinofusus (Sijiho) Kruyeri, J. W. Dawson, Can. Nat. (n.s.), vol. vi, p. 398, pi. vi, fig. 10. 



1879. Trophon (Bnccinofiisus) Kroyeri (1), S. V. Wood, Mou. Crag Moll., 2nd Suppl., p. 9, tab. iii, 



fig. 9. 

 1881. Nephinea {Sipho) Kroyeri, Kobelt, Martini mid Chemnitz, Couch. Cab., vol. ii (Pnrjjuracese), 



p. 122, pi. xli, figs. 2, 3. 

 1882-1901. Neptunea (Sipho) Kroyeri, Friele, Norske Nordh. Exped. (MoUusca), vol. i, p. 16, pi. ii, 



figs. 12—15, 1882; vol. iii, p. 105, 1901. 

 1887. Neptunea (Sipho) Kroyeri, Kobelt, Icon, schalentrag. europ. Meeresconch., vol. i, p. 85, pi. xv, 



figs. 1—3. 

 1899. Sipho (Tritonofvsus) Kroyeri, Posselt, Medd. om Gronl., vol. xxiii, p. 184. 

 1912. Sipho (Parasipho) Kroyeri, Dautzenberg et Fischer, Camp. Scient. Pr. Monaco, vol. xxxvii 



(Mollusques), p. 100, pi. iv, figs. 6, 7. 



Specific Characters. — Shell slender, fusiform, tiirreted ; spire elongate; whorls 

 7 or 8, convex, regularly decreasing in size, the last much the largest, three-fifths 

 the total length ; suture deep, well defined ; ornamented by inconspicuous but 

 regular longitudinal costse on the upper whorls, and indistinct and numerous 

 sigmoid plications on the last; covered also by exceedingly fine spiral striae, hardly 

 visible on the upper whorls, but distinctly shown near the base ; mouth ovate, 

 expanded, ending in a short and well-marked canal; outer lip thin, slightly 

 reflexed, forming an obtuse angle where it joins the body-whorl ; inner lip forming 

 a thin glaze adherent to the pillar. 



Dimensions. — L. 45 — 70 mm. B. 22 — 30 mm. 



Disfribntion. — Recent: Arctic seas: Norway, Greenland, Spitzbergen, Nova 

 Zembla, Russian Lapland, Labrador ; banks of Newfoundland, Gulf of St. 

 Lawrence. 



Fossil : AValtonian Crag : Little Oakley. Newbournian : Shottis- 

 ham. Isle of Man. Pleistocene : Bridlington. 



Pliocene : Iceland. Pleistocene : Riviere du Loup, Canada. 



Remarks. — No general agreement has been arrived at as to the nomenclature of 

 this very distinct species, which has received a different generic name from almost 

 everyone who has described it, few of them, as it seems to me, being wholly 

 satisfactory. No objection can be taken, however, to the term Parasiplio, recently 

 proposed as a sub-genus by Messrs. Dautzenberg and Fischer for Sipho-like shells 

 with regular sinuous longitudinal plications and fine spiral striee, inconspicuous. 



