304 TRANSACTIONS OF THE WAGNER FREE 



Serpulorbis (granifera var. ?) ballistse Dall. 

 Plate 22, figure 21. 



Older Miocene of the Orthaulax bed at Ballast Point, Tampa Bay, Flor- 

 ida, Dall and Willcox. 



Shell thin, rather rapidly enlarging, adherent, but with nearly circular sec- 

 tion ; sculpture of incremental lines and longitudinal riblets, of which the pri- 

 maries are larger and granulated as in granifera, but instead of having the 

 secondaries granulated and alternate, there are between each pair of primaries 

 four or five simple secondary or smaller and subequal threads. A specimen 

 about 60 mm. long has a diameter at the aperture of 8 mm. 



Figure 13, plate 26, Tuomey and Holmes's Pleiocene Fos. S. Carolina, may 

 represent this form ; it is certainly not the Petaloconcluts. 



Serpulorbis decussata Gmelin. 



Serpula decussaia Gmelin, Syst. Nat. xiii. p. 3745, 1791- 



Vermetus decussaius (Morch) Tryon, Man. viii. p. 181, pi. 53, figs. 71, 72, 18S6. 



Older Miocene of Ballast Point, Tampa Bay, Florida, Dall, and of Santo 

 Domingo, Gabb ; Pliocene of the Caloosahatchie and Shell Creek, Dall and 

 Willcox ; Post- Pliocene, Simmons's Bluff, S. C, Burns ; living on the shores 

 of North Carolina, Florida and the Antilles, in twenty-two fathoms or less, 

 U. S. Fish Commission, etc. 



Subgenus Vermicularia Lamarck. 



Serpulorbis (Vermicularia) spirata Philippi. 



Vermiculns spiratits Phil., Arch, fur Naturg., p. 244, 1836. 



Vermetus lumbricalis Gould {non Lam.), Inv. Mass. i. p. 287, 1841 ; Conrad, Am. Jour. Sci. 



xxxviii. 109, 1S35 ; name only. 

 Vermettis Conrad, Proc. Acad. Nat. Sci. Phila. 1S62, p. 288. 

 Vermetus carotiJte?ists Conr., Proc. Acad. 1863, p. 568. 

 Vermicularia spirata Dall, Bull. U. S. Nat. Mus. 37, p. 144, 1889. 

 Vermetus radicula Stimpson, etc. 



Pliocene of the Caloosahatchie, Shell Creek, Myakka River and Alli- 

 gator Creek, Florida, Dall and Willcox ; of the Croatan beds, Neuse River, 

 N. C, Johnson ; of Costa Rica, Gabb ; living from Massachusetts Bay to the 

 Southern Antilles in moderate depths of water. 



This well-known recent form is widely distributed in the Pliocene, but I 

 have seen nothing from the Miocene which could be referred to it except 

 Vermettis trilineatits Guppy, which is based on the young spiral portion. 



Genus VERMETUS (Adanson) Morch. 



Subgenus Petaloconchus Lea. 



Vermetus (Petaloconchus) irregularis Orbigny. 



Vermetus irregularis Orb., Moll. Cuba, i. p. 235, pi. xvii. f. 16, 18, 1842. 



? Serputa convoluta H. C. Lea, Trans. Am. Phil. Soc. ix. p. 233, pi. 34, f. i, 1845. 



