188 PLIOCENE MOLLUSCA. 



Sipho glaber (Verkriizen), Kobelt. Plate XXIV, figs. 1, 2. 



1876. Sipho glaher (Verkriizen, MS.), Kobelt, Jahrb. Deutsch. Malak. Gesellsch,, vol. iii, p. 174, 

 pi. iii, fig. 3. 



1877. Sijjho tjlaber, Morch and Poulsen, MS. List in Geological Mu.seum, Copiuliagen, no. 14 1, 

 (unpublished). 



1878. Siplio glaher, G. 0. Sars, Moll. Keg. Arct. Norv., p. 271, pi. xv, fig. 7. 



1880. Fusus (ilaber, G. B. Sowerby, Tlies. Conch., vol. iv (Fusus), p. 93, pi. xiii, fig. 148. 



1887. Neptunea (Sipho) glabra, Kobelt, Icon, schalentrag. europ. Meeresconch., vol. i, p. 73, pi. xiii, 



fig. 3. 

 1893. Sipho gracilis, var. glaber, Norman, Ann. Mag. Nat. Hist. [6], vol. xii, p. 354, pi. xvi, fig. 4. 

 1899. Sijiho glaher, Posselt, Medd. om Gronl., vol. xxiii, p. 188. 



Specific Characters. — Shell fairly solid, fusiform, pyramidal, regularly tapering ; 

 spire more or less elongate, with a bulbous apex ; whorls 7-8, nearly flat, the last 

 more than half the total length, abruptly contracted towards the base ; suture 

 slight, somewhat oblique ; surface smooth, with exceedingly fine and inconspicuous 

 spiral striee, showing numerous faint and sinuous lines of growth ; mouth oval, 

 angulate above ; outer lip gently curved, not expanded ; inner lip forming a thin 

 glaze closely adherent to the flexuous pillar; canal rather short, turning to the 

 left. 



Dimensions. — L. 50 — 65 mm. B. 25 — 28 mm. 



Bistrihniicm. — Recent: Pinmark, Russian Lapland, Lofoten Islands, Iceland, 

 Greenland. 



Fossil : Waltonian Crag : Little Oakley. 

 Pliocene deposits : Iceland (Morch). 



Remarks. — When examining my Oakley collection Dr. 0yen had no hesitation 

 in identifying one or two specimens with S. glaher. Unfortunatel}^, like the 

 majority of our Red Crag Siphos, they have lost their apex, which in this species is 

 bulbous, but otherwise they correspond with some Recent specimens I have received 

 from Dr. Nordmann in form, in the smooth and polished surface of the whorls, 

 their fine and inconspicuous spiral sculpture and their less solid texture, differing 

 in these respects from our Crag specimens of S. (jracills, to which they are 

 otherwise not dissimilar. 



The late Prof. M. Sars with Mr. Priele and some other Scandinavian concho- 

 logists have regarded /S'. glaher as a variety of the latter, but this view is not 

 generally accepted. Possibly now that attention has been called to the matter this 

 species may be found at other horizons of the Red Crag. 



8. glaher is a northern species, unknown from the southern coasts of Norwa}', 

 or from the Christiania fjord. It has been dredged in Lapland and in Greenland at 

 a depth of from 300 to 1300 metres. 



