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Cincinnati Society of Natural History. 



Locality, Mississippi, Dr. Spillman." 



I have no doubt, the specimen figured here, is the one above de- 

 scribed ; should it prove new, however, I propose the name of 

 Scalaria Spilhnani for it. The mouth is broken away as well as 

 the apex, but enough remains to give a very good idea of the 

 species. My specimen was received from Dr. Spillman also, and 

 was found at Enterprise, Miss., probably Jacksonian. 



Triton subalveatum, Con. J. A. N. S., 2d ser. , Vol. I., p. 207; 

 Vol. II., p. 41; f. 1, 2, 8. This Vicksburg fossil is not a Triton; it 

 has an indistinct oblique fold upon the .labium and a canal ; Con- 

 rad's figures do not show this. 



Mr. Geo. VV. Tryon, Jr., in "Structural and Systematic Con- 

 chology, " Vol. II., p. 124, underTRiTON, remarks: " Tritonopsis, 

 Conrad. The type is a water-worn specimen, which Prof. Angelo 

 Heilprin, who has examined the shell, declares to be too imperfect 

 to assign to it any reliable characters. Has some resemblance to 

 the section Cabestaua, like T. doliarinm L. T. subalveatum, Con. 

 (xlvi.,62), Eocene, Vicksburg." 



The subgenus seems never to have been characterized. It is 

 used in the Smithsonian Catalogue, 1866. It must be expunged, 

 as the shell is no doubt a Fasciolaria, and should therefore be 

 known as Fasciolaria subalveatum. 



Caricella demissa, Con. Among a number of specimens 

 collected at Vicksburg there are several that differ considerably 

 from the description. The shell varies from nearly smooth to an 

 entirely cancellated surface. 



Cithara Mississippiensis, " Con. Vicksburg group, described 

 as a Fulgoraria, and subsequently made the type of an uncharac- 

 terized genus, " Otoc/ieilus." Occurs at Red Bluff, Miss., two 

 inches in length. 



Many of the Vicksburg species at this point are much larger 

 and finer than at the typical locality. 



Pyrula' (Pyrificus) Smithii, Sowb., PI. 3, figs. 23 a, b. This 

 shell, of which mention is made by Conrad, from New Jersey, 



