APPENDIX. 315 



Nassa pygmjea, Lamarck. Tab. XXXI, fig. 5. 



Ranella PYGMiEA. Lam/c. Hist, des An. sans Vert., 2d ed., vol. ix, p. 550, No. 14. 



— — Kiener. Coq. viv. (Ranel), p. 33, pi. 10, fig. 2. 



Tritonia varicosa. Turt. Zool. Journ., No. 7, p. 365, t. 13, fig. 7. 

 Nassa incrassata, var. Flemg. Brit. An., p. 340, 1828. 



— pygm^ea. Fori, and Hani. Hist. Brit. Moll., vol. iii, p. 394, pi. 108, figs. 5, (i. 



Spec. Char. Testa turritd, costatd et spiraliter striatd, costis numerosis, striis creberrimis decus- 

 santibus ; sa>pe varicibus in anfractibus superioribns ; aperturd ovatd, labro extus incrassato, varicoso. 



Shell turreted, costated, and spirally striated, ribs numerous, with close-set strise ; upper volutions 

 often bearing thickened ribs or varices ; aperture ovate ; outer lip thickened externally. 



Length, \ inch. 



Locality. Cor. Crag, Sutton. Recent, Britain. 



A single specimen, but not in good condition, is in my cabinet, and appears to correspond with what 

 the British conchologists have confidently proposed as a distinct species. I believe the Crag fossil to be 

 identical with the living shell. 



I have withheld a notice of this, as well as a few other imperfect specimens from the Crag, up to the 

 present time, in the hope of being able to procure something better to represent than what I am now only 

 able to give. 



Nassa Monensis, Forbes, MS. 



Nassa Monensis. Strickland. Proc. Geol. Soc, vol. iv, p. 8. 



In the first volume of my Monograph, p. 31, t. 3, fig. 5, a Red Crag shell was considered to have 

 belonged, to the above species, and it was inserted as such upon the authority of the late Professor E. 

 Forbes. Mr. Smith has recently sent me a MS. note, accompanied with a sketch, by the origina' 

 discoverer, of what is there called N. Monensis. " A r assa differing from N. macula in having the spire less 

 produced, the body whorl much more ventricose, and the longitudinal ribs fewer. It appears intermediate 

 between N. macula and N. ambigua." Forbes. The figure presents some considerable differences from the 

 Crag shell, and I regret my inability to obtain a sight of the Manx specimen ; they must, therefore, remain 

 united for the present. 



Nassa Pliocena. Strickland. Proc. Geol. Soc, vol. iv, p. 9. 



Locality. Isle of Man. 



This shell I have been unable to obtain a sight of. 



Nassa reticulata is enumerated in Mr. Smith's 'List of the Clyde Fossils,' 'Proc. Geol. Soc.,' vol. iv, p. 9. 



" Buccintjm ciliatum. Fabricius. 



" Syn. (a variety.) Buccinum Hnmphreysianum, Bennett. Possibly, Buc. fusiforme, of Broderip, may 

 be an extreme form of this species. 



"Locality. Fossil, North of England and Scotland. 



Living, very rare in the British Seas, common in Arctic Seas and on the Banks of 

 Newfoundland." — Forbes, 'Mem. Geol. Surv.,' vol. i, p. 427. 

 This is another recorded British Tertiary fossil that I have been unable to obtain a sight of. 



