1895. 



PROCEEDINGS OF THE NATIONAL MUSEUM. 27 



its growth and slightly Incurved in the middle, sharp, anteriorly round- 

 ing into the short, spirally twisted pillar, which lias a groove behind it 

 and also a sharp, shallow groove on the plait, making it look double, 

 though the distal end is single; the body shows a thin wash of callus; 

 surface of the shell when i)erfect, brilliantly polished, smooth. Lon- 

 gitude, 2.5; maximum diameter, 1.25 mm. 



Habitat.— Chi\)o\a beds (2213), Chipola River, Florida. 

 . Ti/pes.—^o. 113871, U, S. N. M., and in the collection of Mr. Aldrich. 



Tlie groove on the plait is a characteristic feature. 



This species is named in honor of Dr. Paul Fischer, the distinguished 

 author of the Manuel de Conchyliologie. 



TORNATINA (CYLICHNELLA:) GABBI, Ball. 

 CiiJichnella ovum-lacerti, Dall, Trans. AVaguer Inst., Ill, p. 15, 1S90, ex parte. 



Pliocene of the Caloosahatchie beds, DalL 



The reception by the National Museum of Mr. Guppy's collection 

 of West Indian fossils has enabled a critical comparison to be made 

 between the North American and Antillean fossils, which had been 

 referred to his species. The result shows that the Pliocene shell differs 

 from its Miocene forerunner, being larger, proportionately more slender, 

 and somewhat more flaring at the base than the T. (C.) hidcntata, Gabb 

 and Orbigny. For this reason I propose for it the name of Tornafina 

 {CyJichnella) gabhi. It reaches a length of 4.75 mm., and a maximum 

 diameter of 2.5 mm. 



TORNATINA (CYLICHNELLA) OVUM-LACERTI, Guppy. 



Cylichna ovum-lacerii, Guppy, Geol. Mag., I, p. 437, pi. xviii, fig. 22, 1874. 

 CylichncUa hidentaia, G.A.BB, Proe. Acad. Nat. Sci. Phila., 1872, p. 273 (uot pi. 10, 



fig. 2); Trans. Xm. Phil. Soc, XV, p. 246, 1873. 

 CylichneUa hidentata, Dall, Blake Gastr., p. 46, 1889, ex parte. 

 CyJichnella ovum-lacerti, Dall, Trans. Wagn. Inst., Ill, p. 15, 1890, ex parte. 

 Not Bulla bidentala, Orbigny, Moll. Cuba, p. 125, pi. iv, figs. 13-16, 1841. 



Ill my Blake report I followed Gabb in referring his Santo Domingo 

 CylichneUa bidentata to the Bulla bidentata of Orbigny. It ai>pears, 

 however, that Gabb's Santo Domingo fossils are not identical with the 

 species described by Orbigny, though the latter are also found fossil in 

 our Miocene and Pliocene, both in the Chesapeake ^Miocene of Virginia, 

 where it was described under the name of Bulla bipUeata by Lea, and 

 ill the Chipola Miocene of the Alum Bluff beds, on the Yellow Kiver at 

 Oak Grove, Santa Rosa County, Florida. 



The Santo Domingo fossil is a much larger and proportionately 

 stouter shell and more distinctly spirally grooved all over, Orbigny's 

 shell being often grooved only near the base. Gabb's shell measures 

 4 mm. long and 2 mm. in diameter; Orbigny's 3 mm. long by 1.25 mm, 

 in diameter. For the former, Guppy's name must be adopted. 



Gabb's types are in the Academy of Natural Sciences at Philadelphia ; 

 the National Museum possesses specimens (No. 11374(1) from Potrero,Rio 



