ART. 22 MIOCENE GASTROPODS AND SCAPHOPODS- — MANSFIELD ^57 



The recent analogue is T. hroderipiana Orbigny, a species on the 

 west coast extending from the Gulf of California to Peru, but the 

 recent species in general is more medially compressed on the later 

 whorls than the Trinidad species. 



TURRITELLA, species cf. T. ALTIURA Conrad (Typical) 



Turritella aUilira Conuad, Pacific R. R. reports, vol. 6, p. 72, pi. 5, fig. 19, 1857. 

 Turritella gahbi TotJLA, Jahrb. kk. Geol. Reichsanstalt, p. 695, pi. 25, fig. 5, 1909. 

 Turritella altilira Brown and Pilsbry, Acad. Nat. Sci. Phila. Proc, vol. 63, p. 



358, pi. 27, figs. 2, 3, 1911. 

 Turritella altilira Olsson (typical). Bull. Amer. Paleont., vol. 9, p. 322, pi. 17, 



figs. 6, 7, 1922. 



There are a few poorly preserved specimens that appear to repre- 

 sent Tunntella altilira (typical). Wlien better specimens are pro- 

 cured they may prove closelj' allied species or a varietal form. 



t^f'f'w/Tenc^.— Stations, (?) 9215, 8300, 9212. 



Genus NATICA Scopoli 



NATICA YOUNGI Maury 



T^Gtica youngi Maury, Bull. Amer. Paleont., vol. 5, p. 299, pi. 49, figs. 11, 12, 1917. 

 Natica finitima Pilsbry and .Johnson, Acad. Nat. Sci. Phila. Proc, p. 173, 1917 



( described ) . 

 Natica youngi Maury, Pilsbry, Acad. Nat. Sci. Phila. Proc. pi. 34, fig. 21, 1921. 

 Natica youngi Maury, Bull. Amer. Paleont., vol. 10, no. 42, p. 239, pi. 40, fig. 4, 



1925. ■ 



Occurrence in Trinidad, station 9195, Caroni County, Couva Ward, 

 Springvale, near Couva. 



NATICA CANRENA (Linnaeus) 



Nerita canrena Linnaeus, Syst. Nat., ed. 10, p. 776. 1758. 



Natica canrena Linnaeus, Gabb, Amer. Philos. Soc. Trans., vol. 15, p. 223, 1873. 



Natica canrena Linnaeus, Guppy, Geol. Soc. London Quart. Journ., vol. 32, 



p. 518, 1876. 

 Cf. Natica cuspidata Guppy, Agr. Soc. Trinidad and Tobago Proc, vol. 11, p. 



198, pi. 2, fig. 4, 1911. 

 Natica canrena (Linnaeus), Brown and Pilsbry, Acad. Nat. Sci., Phila., 



Proc, p. 508, 1912. 

 Natica canrena (Linnaeus), Maury, Bull. Amer. Paleont., vol. 5, p. 298, pi, 



49, fig. 10, 1917. 

 Natica canrena (Linnaeus), Pilsbry, Acad. Nat. Sci. Phila. Proc, p. 386, 1921. 

 Natica canrena Linnaeus, Olsson, Bull. Amer. Paleont., vol. 9, p. 327, pi. 



16, fig. 9, 1922. 

 Natica canrena Mauby, Bull. Amer. Paleont., vol. 10, no. 42, p. 238, pi. 40, fig. 



8, 1925. 



Occurrence in Trinidad. — Station 9195, Caroni County, Couva 

 Ward, Springvale, near Couva. Station 9196, Caroni County, Mont- 

 serrat Ward, junction of Gran Couva and Brasso-Tabaquite Roads. 



