INSTITUTE OF SCIENCE, PHILADELPHIA. 381 



Superfamily DOCOGLOSSA. 



Family ACM^IDtE. 



Genus AOM^A Eschscholtz. 



Acmgea punctulata Gmelin. 



Patella punciulata Gmel., Syst. Nat. xiii. p. 3705. 



Acntesa punctulata Dall, Bull. 37 U. S. Nat. Mus., p. 156, 1889; Pilsbry, in Tryon Man. xiii. 

 PP- 37-8, pi. 5, figs. 99, 100, 1-6, 11-13, 1 89 1. 



Pliocene of the Caloosahatchie, Dall, rare ; living from the Florida Keys 

 southward through the Antilles. 



This is the A. pustiilata Helb., A. ciibaniana of Orbigny, A. confusa and 

 pulcherrima of Guilding. It is the only true limpet yet discovered in the 

 Atlantic Pliocene, and, in fact, as far as I know, from our whole Tertiary 

 period, though A. testudmalis Linne, Lepeta cceca, and possibly Acmcea fiilva 

 Fabr., are known from Post-Pliocene beds in the northern portion of the 

 continent. 



Superfamily RHIPIDOGLOSSA. 



Family PHASIANELLID^. 



Genus PHASIANELLiA Lamarck. 



Phasianella pulehella C. B. Adams. 



Turbo pulchetliis Ads., Synops. Sh. Jamaica, Proc. Bost. Soc. Nat. Hist. ii. p. 7, 1845. 



Phasianella brevis Adams, not of Orbigny. 



Phasianella piilchella Dall, Blake Report Gastr., p. 351, 1889. 



Pliocene of the Waccamaw River at Tilly's Lake, South Carolina, John- 

 son ; living in the Antilles and the Florida Keys, and northward to Cedar 

 Keys, West Florida. 



The young have quite a strong umbilical rib, which sometimes results in 

 a small sulcus at the margin of the aperture, and in the fossils gives them an 

 aspect which at first seems quite different from Phasianella. But this feature 

 is exceptional and not persistent in the same individual. 



Phasianella brevis Orbigny. 



Phasianella brevis Orb., Moll. Cuba, ii. p. 79, pi. xx. figs. 19, 21, 1842, not of Adams, 1850 ; 

 Dall, Bull. 37 U. S. Nat. Mus. p. 158, pi. 19, fig. 10 b, 1889. 



Older Miocene of the Chipola beds, Calhoun Co., Florida, Burns ; living 

 from Cape Hatteras to Martinique in moderate depths of water. 



This species will undoubtedly be found in the Pliocene of the Caloosa- 

 hatchie when thoroughly searched. It agrees in all respects with the recent 

 shells, passing through the same series of variations, and even- possessing the 

 same color-pattern, as indicated by the surface-erosion of the shell, where, as 

 is well known, the spots originally occupied by dark color-markings decay 

 before the rest of the surface. 



