96 BULLETIN 90, UNITED STATES NATIONAL MUSEUM. 



SERPULORBIS DECUSSATA Gmelin. 



Serpula decussata Gmelin, Syst. Nat., vol. 13, p. 3745, 1792. 



Vermctus dcctissatus (Morch) Thyon, Manual, vol. 8, p. 181, pi. 53, figs. 



71, 72, 1886. 

 Serpulorbis decussata Dall, Trans. Wagner Inst., vol. 3, pt. 2, p. 304, 1892. 



Oligocene of the Tampa silex beds, at Ballast Point, Dall, and of 

 Santo Domingo, Gabb. Pliocene of the Caloosahatchie and Shell 

 Creek, Florida, Dall and Willcox. Pleistocene of Simmons Bluff, 

 South Carolina, Burns. Living from North Carolina to the An- 

 tilles in 22 fathoms or less. United States Fish Commission. 



Genus PETALOCONCHUS Lea. 



Petaloconchus Lea, Trans. Amer. Pliilos. Soc, ser. 2, vol. 9, p. 233, 1845. 

 Type, P. sculpturatus Lea, Trans. Amer. Philos. Soc, ser. 2, vol. 9, pi. 

 34, fig. 3. 



PETALOCONCHUS VARIANS Orbigny. 



Vermetus varians Orbigny, Voy. Am. Mer. Moll., p. 456, pi. 54, figs. 7-10, 



1843. 

 Vermetus (Petaloconchus) varians Dall, Trans. Wagner Inst, vol. 3, pt. 2, 



p. 305, 1892. 



Tampa silex beds at Ballast Point, Tampa Bay, Florida ; Pliocene 

 of the Waccamaw beds of North Carolina and of the Caloosahatchie 

 and Shell Creek, Florida, Willcox. Pleistocene of the Florida Keys, 

 and living from southwest Florida, south to Rio Janeiro; Orbigny. 

 U. S. Nat. Mus. No. 165716. 



Another species of Petaloconchus appears to exist in the silex beds, 

 but the specimens so far obtained are insufficient for its identification. 



Genus VERMICULARIA Lamarck. 



Vermicularia Lamakck, Prodrome, p. 78, 1799. Monotype, Serpula lumbri- 



calis Linnaeus. 

 Vermetus Daudin, Recueil de M^moires, 1800, p. 34, same type. 



VERMICULARIA (ANGUINELLA) VIRGINICA Conrad. 



Serpula virginica Oonrad, Foss. Medial Tert., page 3 of cover to part of the 



editions of parts 1 and 2, April 16, 1839. 

 Vermctus virginica (Conrad) Orbigny. Prodr. Pal., vol. 3, p. 48. 

 Anguinella virginica Conead, Medial Tert., p. 77, pi. 44, fig. 41, 1845 ; Proc. 



Acad. Nat. Sci. Phila., for 1863, p. 568.— Dall, Trans. Wagner Inst., 



vol. 3, pt. 2, p. 306, 1892. 

 Vermetus anguine Tuomey and Holmes Pleioc. Foss. S. Car., p. 123, pi. 26, 



fig. 12, 1857 ; not of Lea, 



Oligocene of Shiloh, New Jersey, and of TVHiite Beach, near 

 Osprey, Florida, Dall. Miocene of Virginia, Conrad, and of the 

 Pedee River, South Carolina, Tuomey and Holmes. 



