PAUlSrA OF OKTHAULAX PUGNAX ZONE. lOS 



River, Virginia ; of North and South Carolina, and of the upper bed 

 at Alum Bluff, Chattahoochee River, Florida. U. S. Nat. Mus. No. 

 112597. 

 This species does not appear to have survived into the Pliocene. 



Genus CALYPTRAEA Lamarck. 



Calpptraea Lamabck, Prodrome, p. 78, 1799 (not of Lamarck, Syst des 

 Anim. s. Vert, 1801, p. 70). Type, C. chinensis Linnaeus. 



Trochita Schumachek, Essai, p. 184, 1817. 



Infundihulum Sowekby, Min. Conch., vol. 1, pi. 97, 1812; not of Montfort, 

 1810. 



Qalerus (Anonymous) Mus. Calonnianum, p. 1797 (not available under the 

 rules). 



Leptonotis Conrad, 1866, which was regarded as a very young 

 Calyptraea by the writer in the Tertiary of Florida, 1892, is now, 

 according to Prof. G. D. Harris, to be referred to the very young 

 stage of Cafulus complectus Aldrich. 



CALYPTRAEA TROCHIFORMIS Lamarck. 



Calyptraea trochifonnis Lamarck, Ann. du Museum, Paris, vol. 5, pt. 1, 



p. 385, pi. 15, fig. 3, 1804. — Deshayes, Coq. fos. has. de Paris, vol. 2, 



p. 30, pi. 4, figs. 1^, 11-13, 1824. 

 Infundihulum cchinulatum Sowerby, (7. spinulosum, I. tuberculatum Sow- 



erby), Min. Conch., vol. 1, pi. 97, figs. 1, 2, 7, 1812. 

 Infundihulum trocMforims Lea, Contr. Geol., p. 96, pi. 3, fig. 76, 1833. 

 Infundihulum urticosum Conrad, Fos. Tert. form., ed. 1, No. 3, p. 32, 1833. 

 Trochita alta Conrad, in Wailes' 'Geol. Miss., p. 289, pi. 15, figs. 3a, 36, 



1854 ; Proc. Acad. Nat. Sci. Phila., for 1855, p. 259. 

 Infundihulum perarmatum Conrad, Proc. Acad. Nat. Sci. Phila., pi. 1, p. 



31, 1841 ; Fos. Med. Tert., p. 80, pi. 45, fig. 6. 

 Trochita tetrica Conrad, Checkl. Eoc. Fos. Smiths. Inst, p. 28. No. 817, 



1866; Journ. Acad. Nat. Sci. Phila., ser. 2, vol. 1, p. 113, lines 8 and 



9, and ref. to plates p. 133. pi. 11, fig. 3, Aug. 1848. 

 Calyptraea trochiformis Dall, Trans. Wagner Inst., vol. 3, pt. 2, p. 352, 1892. 



^ Velutina {Otina) expansa Whitfield, 1865, and Leptonotis (new 

 genus) expansa Conrad, 1866, which were tentatively placed as syno- 

 nyms of Cdlyptraa trochiformis by the writer in the Wagner Trans- 

 actions above cited, are referred to the young of Capulus complectus 

 Aldrich by Prof. G. D. Harris. They were founded on a young shell 

 one millimeter in diameter. 



The species is fossil in the Eocene of the Paris Basin, of Britain, 

 and of America; in the Oligocene of Vicksburg, Miss., and of the 

 Tampa silex beds at Ballast Point, Tampa Bay, Florida, and of 

 the lower bed at Shiloh, New Jersey ; in the Miocene of the Choptank 

 River in Maryland, and of Wilmington, North Carolina. U. S. Nat. 

 Mus. No. 112598. 



