GASTEROPODA. 47 



convexls longitwdinaliter creierrime costulatis, transversim vel spiraliter striatis, suturis 

 proftmdis; apertura ovata ; labro acuto, columella triplicata. 



Length, f ths of an inch. 



Localities. Coralline Crag, Sutton, and near Orford. 



When describing C. costellifera ('Crag Moll.,' vol. i, p. 66) I considered the above 

 represented specimen merely as a variety of that shell ; but I now believe it to be distinct. 

 Mr. Bell has lately sent to me a specimen from near Orford, which may be referred to it ; 

 and with this was the name of C. Bonellii, var. Bertonensis ; but I think my shell differs 

 sufficiently to be specifically removed from that species ; it is more elongated, has finer 

 sculpture and a deeper suture, with more convex volutions ; the upper two of which are 

 free from ornament. 



Cancellaria subangulosa, S. Wood. Crag Moll., vol. i, p. 66, Tab. VII, fig. 20. 



Supplement, Tab. Ill, fig. 27. 



Admete Reedii, A. Bell. Ann. and Mag. Nat. Hist., September, 1870. 



Localities. Cor. Crag, Sutton, and near Orford. 



Mr. Bell placed in my hands the specimen figured in Tab. Ill, fig. 27, of this Supple- 

 ment, and he has since described it under the name of Admete Reedii, as above, but except in 

 point of size I cannot distinguish between it and a numerous suite of specimens in my pos- 

 session of subangulosa, all small, but varying much in size, which, like this larger shell Reedii, 

 possess no fold on the columella. This fold is shown on the specimen figured in the 

 ' Crag Mollusca,' Tab. VII, fig. 20, but it does not appear to be a constant character. 

 Specimens of subangulosa were given by me to Dr. Koenen, who recognised it as a 

 German Oligocene species (' Unter Oligoc. Fauna ' von Helmstadt, S. 473), and Dr. 0. 

 Speyer has, in his ' Conchology of the Cassel Tertiaries ' (Cassel, 1867), figured several 

 forms which he groups together as this shell. In some the shoulder is almost obsolete, 

 as it is in gracilenta, a>nd the folds on the columella faint and double, and others where 

 the fold is very distinct and treble. 



It would seem, therefore, that this is a very variable shell, and that the folds on the 

 columella are not a reliable character in it. Mr. Bell's large shell Reedii shows six whorls, 

 while those specimens of mine, that are identical with it in all respects save size, show but 

 four. This strengthens my view that my subangulosa is only the young of Reedii ; but 

 why the full-grown shell should be so rare I am unable to suggest. One of Dr. Speyer's 

 figures shows six whorls. 



'B 



Cancellaria Bellardi? Mich. Supplement, Tab. Ill, fig. 25. 



Cancellaria Bellardii. Descrip. des Foss. Misc. de l'ltalie Septent., p. 225. 

 — evulsa, Sow. Bellardi, Descript. d. Cancell. foss. du Piemont, p. 25. 



