512 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



1394. Placenticeras ? vancouverensis ( Meek). Holotype. 



Nanaimo (Cret. ). Komooks, Vancouver Island. 



Meek, Bull. U. S. Geol. and Geogr. Surv. Terr., II, 1876, p. 370, 

 pi. 6, figs. la-c. 



vSee Amnionite.s vancouverensis. 



18936. Placenticeras whitfieldi Hyatt. Cotype. 



Montana (Upper Cret. ). Upper Missouri. 



Hyatt, Mon. XLIV, U. vS. Geol. vSurv., 1903, pp. 221-232, pi. 47, 

 figs. I, 2. 



41364. Placentula marginata Ulricli. Holotype. 



Lorraine (Ord. ). Cincinnati, Ohio. 



Ulrich, Journ. Cincinnati Soc. Nat. Hist., XIII, 1890, p. 124, pi. 

 10, figs. i3a-c. 



1 15422. Placocythus barretti Duncan. Cotypes. 



Miocene. Jamaica, West Indies. 



Duncan, Quart. Journ. Geol. Soc. London, XIX, 1863, p. 437, pi. 

 16, fig. I. 



1 15425. Placocythus morei Dtuican. Plcsiotype. 



Miocene. Jamaica, Briti.sh West Indies. 



Guppy, Quart. Journ. Geol. Soc. London, XXI, 1865, 1866, p. 10, 

 pi. 2, fig. I. 



1 15423. Placotrochus alveolus Duncan. Holotype. 



Miocene. Jamaica, West Indies. 



Duncan, Quart. Journ. Geol. vSoc. London, XIX, 1863, p. 438, pi. 

 16, fig. 2. 



135778. Placunanomia lithobleta Dall. Cotypes. 



01i,y;ocene. Bowden, Jamaica. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Vt. IV, 1898, 

 p. 778. 



8082. Placunopsis hilliardensis White. Cotypes. 



Colorado? (Cret.). Hilliard Station, Wyoming. 



White, Eleventh Ann. Rept. LT. S. Geol. Surv. Terrs., 1879, 

 p. 278, pi. 7, fig. 14a. — Stanton Bull. No. 106, U. vS. Geol. 

 Surv., 1893, p. 68, pi. 8, fig. 11. 



1 15370. Plagionotus loveni Cotteau. Holotype. 



Eocene. vSt. Bartholomew, West Indies. 



Cotteau, Kongl. Svenska Vet-.Akad. Hand., XIII, 6, 1S74, p. 41, 

 pi. 8, figs. 7, 8. 



I 15492. Planaxis crassilabrum Guppy. Holotype. 



Pliocene. Trinidad, British West Indies. 



Guppy, Geol. Mag., London, Dec. II, I, 1S74, p. 41 1, pi. 18, fig. 13. 



18360. Planolites annularis Walcott. Holotype. 



Lower Cambrian. Near North Greenwich, Washington 

 County, New York. 



Walcott, Proc. U. S. Nat. Mus., XII, 1889, j). 34; Tenth Ann. 

 Rept. U. S. Geol. Surv., 1890, p. 602, pi. 60, fig. 5. 



