108 PLIOCENE MOLLUSCA. 



Specific Characters. — Shell solid, smooth and polished, ovato-conical ; orna- 

 mented by numerous curved and irregular longitudinal folds, not very prominent, 

 which do not extend to the base of the shell, together Avith raised spiral lines 

 of unequal strength on the lower whorls, giving the upper ones a quasi- 

 reticulate appearance ; spire elongated ; suture deep ; whorls distinctly convex, 

 the last excavated below, more than one-half, and the mouth about three-eighths 

 of the total length ; mouth short, obtusely-angulate above ; outer lip rounded ; 

 inner lip forming a thin glaze upon the pillar, nearly destitute of callus ; canal 

 short, open, slightly recurved. 



Dimensions. — L. 65 mm. B. 28 Tom. 



Disfribntiov.—L'eceiit: St. Flavie, Canada, Banks of Newfoundland, Arctic 

 Seas. 



Fossil : Waltonian Crag : Little Oakley. 



Remarlcs. — I have a unique specimen from Oakley of a Buccinum which corre- 

 sponds with Grould's figure and description of B. Donovanl except that in the Crag 

 fossil the longitudinal folds are more numerous. This species has not been 

 hitherto discovered in any of the Pliocene or Pleistocene deposits of Great Britain. 

 Prof. Gr. 0. Sars describes a Recent shell under the same name, reporting it from 

 Scandinavia, Greenland, and Labrador. The Oakley specimen conforms rather to 

 the American form, however, than to Sars' figure ; the latter approaches B. ituchitiiin, 

 of which Dr. 0yen and Messrs. Dautzenberg and Fischer think it may be a variety. 



Gould says the American shell may be distinguished from B. widataiii by its 

 greater polish ; our Crag fossil agrees with this description. Out of some hundreds 

 of specimens of that species known to me from the Crag, I do not remember 

 another which approaches it in this respect. It differs from those figured by MM. 

 Dautzenberg and Fischer in its more numerous plications, but agrees with one of 

 them in having the short and rounded mouth which seems one (»f the characteristics 

 of this species. It appears to be the same as fig. 5 of Prof. Kobelt's pi. Ixxxii 

 (ojj. cif.). 



Buccinum variabile, Verkriizen. Plate X, figs. 4, 5. 



1881. Buccimim variabile, Verkriizen, Jahrb. Deutscli. Malak. Gesellscli., vol. viii, p. 300. 



Specific Characters. — Shell ovato-conical ; whorls G, convex, regularly tapering 

 to a blunt point, the last three-fourths the total length ; ornamented by numerous 

 longitudinal costge, distinct but not very prominent, which disappear on the body- 

 whorl, and by wavy, distant and rather inconspicuous spiral lines with exceed- 

 ingly fine striae between them ; suture deep ; mouth oval, angulate above ; outer 

 lip regularly curved, not expanded ; inner lip forming a wide glaze on the pillar ; 

 pillar twisted ; canal very short. 



