106 BULLETIN 90, UNITED STATES NATIONAL MUSEUM. 



NATICA (CRYPTONATICA) FLORIDANA Dall. 



Plate 16, fig. 3. 



Natica (CryptonaUea) floridnna Dall, Trans. Wagner Inst., vol. 3, pt. 2, 

 p. 36G. pi. 17, fig. 5, 1892. 



Oligocene of the Tampa silex beds, at Ballast Point, Tampa Bay ; 

 and of the Chipola marl, on the Chipola River, Calhoun County, 

 Florida; Dall and Burns. U. S. Nat. Mus. No. 165129. 



There are differences of rotundity at the shoulder in different 

 specimens, similar to differences due to'sex in recent species. 



Genus POLINICES Montfort. 



PoUnices Montfort, Conch., vol. 2, p. 223, 1810. Type, 'Merita mamilla 

 Linnaeus.— Dall, Trans. Wagner Inst., vol. 3, pt. 2, p. 367, 1892. 



Subgenus EUSPIRA Agassiz. 



Euftpira Agassiz, German ed. Sowerby's Min. Conch., pp. 14, 320, 1842. 



First species, N. gUmcinoides Sowerby. 

 Lunatia Gray, Proc. Zool. Soc. London, 1847, p. 149. Type, Natica ampul- 



laria Lamarck. 

 Naticina Fischer, Man. Conchyl., p. 766, 1885; not of Guilding, Trans. 



Linn. Soc, vol. 5, p. 31, 1834. 

 Natica Risso, Hist. Nat. Eur. Merid., vol. 4, 1826, p. 147. Type, N. pulchella 



Risso; not Natica Scopoli s. s. 

 Lunatia Dall, Trans. Wagner Inst., vol. 3, pt. 2, p. 369, 1892. 

 Euspira Dall, Bull. Mus. Comp. Zool., vol. 43, p. 334, 1908; U. S. Geol. 



Survey, Prof, paper 59, p. 87, 1909. 



Notwithstanding a misstatement in the diagnosis (which is con- 

 tradicted by the figures) Euspira 'will take the place of the more 

 familiar Lunatia of Gray, having five years' priority, as I showed 

 in 1908. The type is E. glaucinoides Sowerby=iV. lahellata La- 

 marck, 1804. 



POLINICES (EUSPIRA) HEMICRYPTUS Gabb. 

 Plate 9, fig. 9. 



Natica hemicrypta Gabb, Journ. Acad. Nat. Sci. Phila., ser. 2, vol. 4, p. 375. 



pi. 67, fig. 5, 1860. — Conrad, Amer. Journ. Conch., vol. 4, p. 66, pi. 6, fig. 1 



(not fig. 7), 1868. — Whitfield, Gastr. N. J. Miocene marls, p. 118, pi. 



22, figs. 1-5, 1895. 

 Lunatia eminuloides Gabb, Jouni. Acad. Nat. Sci. Phila., ser. 2, vol. 8, p. 



339, pi. 44, fig. 4, 1875. 

 f Natica caroliniana Tuomey and Holmes, Pleioc. fos. S. Car., p. 116, pi. 25, 



fig. 18, 1857. 

 Polynices (Lunatia) hemicryptus Dall, Trans. Wagner Inst., vol. 3, pt. 2, 



p. 371, 1892. 



Oligocene of Shiloh and Jericho, New Jersey, Gabb and Burns; 

 of the Tampa silex bed, at Ballast Point ; of the Chipola marls, near 



