44 TRANSACTIONS OF THE WAGNER FREE 



tuberculosa Sowerby, occurs rarely in the Caloosahatchie beds, and, in the 

 Miocene of North Carolina, is represented by T. carolinensis Emmons. 



Trigonostoma subthomasise n. s. 

 Plate II, figure 3. 



Shell in general much like C. TliomasicB Crosse (C scalai'ina Sowerby, 

 Reeve, non Lamarck), but with a proportionally shorter spire, stronger spiral 

 striation and of smaller size. Whorls six, scalar, crossed by about (on the last 

 whorl) 14 strong rather sharp ribs, spinose at the carina and lamellar behind 

 it ; spiral sculpture of numerous rather distant, little elevated small threads 

 with wider, sometimes striate interspaces ; aperture oblique, about half the 

 length of the shell, strongly lirate, triangular, with three well-marked folds on 

 the pillar; umbilicus rather narrow; ribs occasionally varicose. Max. Ion. 

 of shell 20.0; of aperture lO.o; max. lat. of shell 12.0 mm. 



Tampa silex-beds, at Ballast Point, Dall, oiie specimen. 



This shell, though smaller than either, seems intermediate in other charac- 

 ters between the Indo-Pacific recent C. {T?) crenifera Sby. and C. (T.) ThomasicB 

 Crosse. Though the specimen is seriously injured, it furnishes the characters 

 necessary for description. Its nearest fossil relative in our Tertiary is per- 

 haps C. {T.) gevimata Conrad, from Claiborne, Alabama, which is smaller and 

 narrower, and wants the spiral threading. 



None of the English Crag, Paris or Vienna basin fossil species are particu- 

 larly similar to the present species. The process of sllicification may have 

 more or less modified the external characters, and I can only describe them 

 with all reserves. 



Family OLIVID^. 

 Genus OLIVA Brugui^re. 

 Oliva litterata Lamarck. 



Oliva litterata Lam., An. s. Vert. vii. p. 425, 1822. 



Oliva literaia Lam., Emmons, Rep. N. Car. Geol. Survey, pp. 259, 264, fig. 130, 1858. 



Strephona literata Tuomey & Holmes, Pleioc. Foss. S. C, p. 140, pi. xxviii. fig. 13, 1858. 



? Strephona literaia Holmes, Post-Pleioc. Foss. S. C, p. 75, pi. xi. fig. 7, i860. 



Dactylus carolinensis Conrad, Proc. Acad. Nat. Sci. Phila. xiv. p. 563, 1863. 



Oliva cylindrica Sowerby, Quart. Journ. Geol. vi. p. 45, 1849, ^^ parte (Miocene of 



Santo Domingo). 

 Oliva olivacea Marrat, as of Meuschen. 



Miocene of Santo Domingo, West Florida and North Carolina; Pliocene 

 of the Carolinas and Caloosahatchie beds of Florida ; Post-Pliocene of South 

 Carolina (Simmons' Bluff, etc.) and Florida. Recent, North Carolina and 

 West Indies. 



This species is only to be discriminated from 0. reticularis by slight differ- 

 ences of color and its slightly more cylindrical form. It is rare in the Caloosa- 

 hatchie beds, and I have seen no specimens which could be confidently re- 

 ferred to 0. reticularis from these beds. I have seen no genuine specimens 



