INSTITUTE OF SCIENCE, PHILADELPHIA. 305 



Pliocene of the Caloosahatchie beds, Dall ; Post-Pliocene of the Floridian 

 and Antillean coasts ; and living in the same region from Cedar Keys, Florida, 

 to the Southern Antilles, usually in shallow water. 



Lea's species is certainly a l^ervietus, and perhaps should be referred to 

 this species. 



Vermetus (Petaloconchus) varians Orbigny. 

 Vertnehis varians Orb., Voy. Am. M^r., p. 456, pi. 54, figs. 7-10, 1S43. 



Older Miocene of the Orthaulax bed. Ballast Point, Tampa Bay, Florida ; 

 Pliocene of the Waccamaw beds and of the Caloosahatchie and Shell Creek, 

 Willcox; Post- Pliocene of the Florida Keys; living from Southwest Florida 

 south to Rio Janeiro, Orbigny. 



The limits of species among the Vermetidce are notoriously lax, and this 

 species is but doubtfully distinct from the preceding. It is quite likely that 

 its differences of form are due to station and food supply. 



Vermetus (Petaloconchus) erectus Dall. 



Vermetus {Petaloconchus) erectus Dall, Blake, Gastr., p. 262, pi. xxxviii. fig. 4: Three 

 Cruises of the Blake, ii. p. 71, fig. 297, 1888. 



Pliocene of the Caloosahatchie, Dall and Willcox ; living in the Antilles 

 in 37 to 805 fathoms, Blake Exp. 



This species is easily discriminated from the others owing to its habit of 

 building its early whorls together to form a rounded pedestal and then start- 

 ing vertically upward with the remainder of the tube. It seems to be rare in 

 the Pliocene marls. 



Vermetus (Petaloconchus ?) sp. indet. 



Older Miocene of the Orthaulax bed, Ballast Point, Tampa Bay, Florida. 



Two specimens of a Vermetus which do not seem to be referable to either 

 of the preceding species were obtained from the silex-beds. They are not 

 sufficiently complete to render it advisable to describe them under a new name 

 in so difficult a genus as Verinet7cs. They comprise a tolerably regular spiral 

 coil, gradually enlarging, smooth except for large, irregular swellings which 

 have almost the effect of sculpture. The greatest diameter of the coil is 8.5 

 mm., and of the aperture about 3.0 mm. It is possible they may be tips of 

 V. sqiiamulosa Conrad, or Serpiila comwhita H. C. Lea (1845, Miocene of 

 Petersburg, Va.). 



Vermetus (Petaloconchus) sculpturatus H. C. Lea. 



Petaloconchus sctilpturatus Lea, Trans. Am. Phil. Soc , 2d Ser. ix. p. 233, pi. 34, fig. 3, 1S45 ; 



Emmons, Geol. Rep. N. Car., p. 271, fig. 169, 1858 ; not of Tuomey and Holmes, Pleioc. 



Fos. S. C, pi. 26, fig. 13, 1857- 

 Petaloconchus domingensis Sby., Quart. Journ. Geol. Soc. vi. p. 5, pi. x. fig. 9, 1S49. 



