36 BULLETIN 90, UNITED STATES NATIONAL MUSEUM. 



Section OXYMERIS Ball. 



Oxymeris Dall, Proc. U. S. Nat. Mus., voL 26, No. 1342, p. 951, 1903; new 

 name for Acus Gray, not of Edwards; section of Tcrehra; Nautilus, 

 VOL 21, No. 11, March, 1908, p. 124; Bull. Mus. Comp. Zool., vol. 43, No. 

 6, p. 246, 1908. (Not of August, 1900, as mistakenly entered in the 

 synonymy of the last citation.) 



TEREBRA (OXYMERIS) DISLOCATA Say. 



Plate 5, fig. 2. 



Cerithium dislocatum Say, Journ. Acad. Nat. Sci. Phila., vol. 2, p. 235, 1822. 

 Terehra petitii Kiener, Mon. Terebra, p. 37, pi. 13, fig. 32, 1838. 

 Terel)ra rudis Gray, Proc. Zool. Soc. London, 1834, p. 60. 

 Terebra dislocata Holmes, Post. PI. fos. S. Car., p. 70, pi. 11, fig. 12, 1858. 

 Terebra caroUnensis Conrad (part). Post. PI. fos. S. Car., p. 70. 

 Terebra dislocatum Emmons, N. Car. Geol. Surv., p. 257, 1858. 

 Terebra (Acus) dislocata Dall, Trans. Wagner Inst., vol. 3, pt. 1, p. 24, 

 Aug., 1890. 



Tampa silex beds, at Ballast Point, Tampa Bay, Florida; Dall. 

 Also Miocene of Virginia and North Carolina ; Pliocene of the Caro- 

 linas and of the Florida Caloosahatchee beds; Post Pliocene of the 

 whole coast from Maryland southard; and living from Maryland 

 southward to Florida, the Bahamas, and Venezuela. U. S. Nat. Mus. 

 No. 113610. 



This well-known form indulges in many variations. The Ballast 

 Point specimens are somewhat intermediate between the typical form 

 and T. tantula and T. protexta. Miocene specimens from South 

 Carolina agree exactly with the large T. dislocata variety rudis. 

 Similar mutations are common among the recent specimens. 



TEREBRA (OXYMERIS) TANTULA Conrad. 



Terebra tantula Conrad, Journ. Acad. Nat. Sci. Phila., n. ser., vol. 3, p. 114, 

 pi. 11, fig. 15, 1848; Amer. Journ. Conch., voL 1, p. 28, 1865.— Dall. 

 Trans. Wagner Inst., vol. 3, pt. 1, p. 24, 1890. 



Oligocene of Vicksburg, Mississippi, Conrad; of the Tampa silex 

 beds at Ballast Point, Tampa Bay, Florida ; Dall ; and at De Funiak 

 Springs, Florida ; Burns. U. S. Nat. Mus. No. 165028. 



Specimens of the typical tantula have been obtained from Ballast 

 Point since my remarks in the Wagner Institute Transactions were 

 published. 



Family CONIDAE. 



Genus CONUS Linnaeus. 



Cmius Linnaeus, Syst. Nat., ed. 10, p. 712, 1758; ed. 12, p. 1165, 1768.— 

 Lamarck, Prodrome, p. 69, 1799 (monotype, C.marmoreus Linnaeus). 



