THE 



GEOLO&ICAL MAGAZINE. 



1^0. CV.— MARCH, 1873. 



o:Ei,XG-xisrj^Tj ^^istioilss. 



I, — On a New Species of Kostellakia feom the Gault. 



By F. G. H. Price, F.G.S., etc. 



(PLATE VI.) 



I HAVE much pleasure in calling attention to an unusually large 

 Gasteropod, which I had the good fortune to find last February 

 near Copt Point, Folkestone, when in company with Mr, Griffiths, 

 the well-known collector. 



It occurred in the Upper Gault, a few feet aboA^e the hard seam 

 containing Inoceramus sidcatus, and an hybrid Inoceramus, in the 

 zone (No. II.) of Ammonites circularis and Kingcena lima of De 

 Eance.^ 



Never having met with so large a specimen in either of the 

 National Collections or in any private cabinet, I took the opportunity 

 of showing it to Mr. Etheridge, F.E.S., the Eev. Thomas Wiltshire, 

 M.A., F.G.S., and to Mr. J. S. Gardner, F.G.S., all of whom are 

 well known as being thoroughly acquainted with the Gault ; but 

 none of them had ever seen so large an example of Bostellaria 

 before. 



Mr. Wiltshire said that so many exaggerated forms occurred in 

 the bed from whence this specimen was derived, that he was inclined 

 to consider it to be a giant form of Bostellaria carinata ; but I have 

 carefully compared it with several specimens of Bostellaria carinata, 

 and firmly believe it to be a new species. 



The following is the description of the fossil : — Shell turreted, 

 having eights whorls flattened and slightly convex with undulate 

 longitudinal costse, which are crossed by numerous transverse lines. 

 Body-whorl carinated and extended into one spine on the outer lip ; 

 sutures distinct, transversely striated. Few or no undulating costse 

 on the body-whorl above the carina ; both above and below the 

 carina the body-whorl is concentrically and delicately striated. The 

 body-whorl is twice the length of the preceding whorl ; whorls 

 twice as wide as high. Canal produced. Axis 4| inches. 



This description may be somewhat similar to that of Bostellaria 

 carinata, Mantell, Apporrliais carinata, Pictet and Campiche ; yet 

 upon close scrutiny it will be readily observed that this specimen is 



1 See Geol. Mag. Vol. V., No. 4, April, 1868. On the Albian, or Gault of Folke- 

 stone, by C. E. De Ranee, F.G.S., of the Geological Survey. 



VOL. X. — NO. CV. 7 



