FAUNA OF OETHAULAX PUGNAX ZONE, 95 



no visible sculpture ; base rounded to the angular margin of a narrow 

 flatly excavated groove behind the inner lip ; aperture ovate, retrac- 

 tively oblique, entire, the margin crossing the body with a band of 

 callus ; outer lip thin, entire ; inner lip a little thickened behind, pass- 

 ing evenly into the outer lip in front. Height 5.75, maximum di- 

 ameter 3.5 mm. 



Tampa silex beds. Ballast Point, Tampa Bay, Florida. 



One specimen in the Post collection, U. S. Nat. Mus. No. 165124. 



Family CAECIDAE. 



Genus CAECUM Fleming. 



Caecum Fleming, Edinb. Encycl., vol. 7, p. 67, 1817. Fig'd species, C. gla- 



irum, Edinb. Encycl., vol. 7, pi. 204, fig. 7. 

 Caecalium Fleming, Philos. Zool., 1822, fide Macgillivray, Moll. Aberdeen, 



pp. 25, 39, 1848. 

 Brochus Brown, 111. Conch. Gt. Brit., ed. 1, 1827, expl. pi. 10. 



CAECUM SOLITARIUM O. Meyer. 



Caecum solitarium O. Meyer, Alabama Geol. Rep., p. 68, pi. 3, fig. 9, 1886. — 

 Dall, Trans. Wagner Inst., vol. 3, pt. 2, p. 297, 1892. 



Oligocene of Vicksburg, Mississippi (Meyer), and of Ballast Point, 

 Tampa Bay, Florida, in the silex beds. U. S. Nat. Mus. No. 113396. 



Family VERMETIDAE. 



Genus SERPULORBIS Sasso. 



SerpulorUs Sasso, Giorn. Ligustica, 1827, p. 482. — Bronn, Ital. Tertiiirgeb., 

 p. 65, 1831. 



SERPULORBIS GRANIFERA Say. 



Serpula granifera Say, Journ. Acad. Nat. Sci. Phila., ser. 1, vol. 4, p. 154, 



pi. 8, fig. 4, 1824. 

 SerpulorMs granifera Dall, Trans. Wagner Inst., vol. 3, pt. 2, p. 303, 1892. 



Oligocene of Tampa silex beds at Ballast Point, Tampa Bay, 

 Florida, and at White Beach, near Osprey, Florida, Dall; also at 

 Martins Station, Hernando County, Florida, Willcox. Miocene of 

 Marvland, Finch; and of City Point, Virginia, Haldeman. U. S. 

 Nat^Mus. No. 165113. 



SERPULORBIS BALLISTAE Dall. 



Plate 14, fig. 4. 



Serpulorbis (granifera var.?) lallistae Dall, Trans. Wagner Inst., vol. 3, 

 pt. 2, p. 304, pi. 22, fig. 21, 1892. 



Tampa silex beds at Ballast Point, Tampa Bay, Florida, Willcox 

 and Dall. U. S. Nat. Mus. No. 165114. 



