692 PLIOCENE MOLLUSCA. 



Natica (Lunatia) nana (Moller). Plate LIV, fig. 20 ; Plate LVI, fig. 19. 



1842. Natica nana, Moller, Ind. Moll. Groenl., vol. iv, p. 80. 



1878. Lunatia nana, G. O. Sars, Moll. Keg. arct, Norv., pp. 159, 358, pi. xxi, fig. 16. 



1882. Lunatia, nana, Verrill, Trans. Conn. Acad., vol. v, p. 516, pi. xlii, fig. 9. 



1885. Natica nana, Jeffreys, Proc. Zool. Soc, p. 34. 



1897 — 99. Natica nana, Locard, Exp. sci. Trav. et Talisui., vol. i, p. 475, 1897 ; Coq. mar. Cotes de 



France, p. 92,' 1899. 

 1899. Natica (Lunatia) nana, Posselt, Medd. oui Gr0nl., vol. xxiii, p. 141. 

 1901. Natica (Naticina) nana, Kobelt, Icon, schalentrag. europ. Meeresconch., vol. ii, p. 100, pi. liii, 



figs. 15, 16. 

 1901. Natica (Lunatia) nana, Friele, Norske Nordhav. Exped. (Mollusca), pt. iii, p. 69. 

 1901. Lunatia nana, Conch. Soc. List, Journ. of Conch., vol. x, p. 19, no. 387. 



1910. Natica nana, Odhner, Arkiv for Zool., vol. vii, no. 4, pp. 7, 23, 29, pi. i, figs. 26, 27. 



1911. Natica (Ltinatia) nana, Dautzenberg, Journ. de Conch., vol. lix, p. 301. 



1915. Polinices (Euspira) nana, Johnson, Bost. Soc. Nat. Hist., Occ. papers, vol. vii, Faun. New 



Engl., No. 13, p. 107, Mollusca. 

 1919. Natica (Lunatia) nana, A. Bell, Yorks. Naturalist, p. 57. 



Specific Characters. — Shell small, smooth, ovato-globose, imperforate, whorls 3^, 

 slightly convex, the last much the largest, occupying most of the shell ; spire 

 excessively short with a blunt apex ; suture very slight ; mouth large in proportion, 

 obliquely expanded, angulated above ; callosity of the inner lip nearly covering the 

 umbilicus ; operculum corneous. 



Dimensions. — L. 5 — G mm. B. 4 — 5 mm. 



Distribution. — Recent : British seas, north of the Hebrides, France, Gulf of 

 Gascoigne, Nova Zembla, Spitsbergen, Finmark, Vadso, Iceland, Greenland, New 

 England coast, Aleutian islands, north African coast. 



Fossil : Icenian Crag : Aldeby. Pleistocene : Kelsey Hill, 

 Bridlington. 



Remarks. — One of the specimens figured under this name is from Mr. Headley's 

 collection of Bridlington shells, in which it is not rare ; another is from Kelsey 

 Hill and belongs to the Hull Museum. Its recorded distribution as a recent shell 

 is mainly circumpolar, but it has been found as far south as to the north of the 

 Faroes and the Hebrides in Europe, on the New England coast in America, as well 

 as in the Gulf of Gascoigne and the Atlantic coast of north Africa. It seems 

 possible, therefore, that it may be obtained hereafter at some other intervening 

 localities. Jeffreys reports it, moreover, from the "Lightning" and the 

 "Porcupine" expedition, and it has been recently noticed in Mr. Crowfoot's 

 collection of Aldeby fossils. 



Natica (Lunatia) proxima (S. V. Wood). Plate LIV, fig. 8. 



1842— 72.— Natica proxima, S. V. Wood, Ann. Mag. Nat. Hist. [1], vol. ix, p. 530, 1842 ; Mon. Crag 

 Moll., pt. 1, p. 143, pi. xvi, fig. 4, 1848 ; 1st Suppl., pt, i, p. 74, pi. iv, fig. 12, 1872. 



