TRANSACTIONS OF WAGNER 



1582 



J TERTIARY FAUNA OF FLORIDA 



beds as practically of the same age, or so nearly so that the species from dif- 

 ferent localities, such as Bowden and St. Domingo, might be enumerated in 

 the same list. It is, however, certain that the St. Domingo beds contain a 

 fauna which is older than that of Bowden and bears much the relation to it 

 that the Tampa silex beds do to the Chipola in Florida. Nearly twenty per 

 cent, of the Bowden species are common to the St. Domingo fauna, judging, 

 not from lists, but from material which I have compared from the two sources. 

 With the Tampa silex beds Bowden holds ten species in common, with the 

 Chipola fourteen species. The very characteristic genus Orthaulax, which 

 occurs in St. Domingo and in the silex beds and Chipola marl of Florida, is 

 not known from Bowden. 



With the Miocene of Florida the Bowden fauna has five species in com- 

 mon, and they are all species which extend from the Oligocene upward, and 

 are still found in the living state, hence not characteristic. From the data thus 

 supplied it is obvious that the relations of Bowden are with the upper Oligo- 

 cene of the continent. 



It is perhaps with the Oak Grove sands, or between the Chipola and the 

 Miocene, that the position of the Bowden fauna would be marked most plau- 

 sibly against the Tertiary column of Florida formations. 



LIST OF OLIGOCENE FOSSILS OF THE BOWDEN FAUNA. 

 The following species, many of which are still unnamed and are apparently new, 

 were chiefly collected by Messrs. Henderson and Simpson, and Henry Vendryes, Esq., 

 of Jamaica. Others reached the National Museum through Messrs. Bland and Guppy. 

 Those to which an asterisk is prefixed are supposed to survive to the recent fauna; 

 those to which a D is added are also known from the Oligocene of St. Domingo or Haiti ; 

 those followed by C, from the Chipola, and those followed by T, from the silex beds of 

 Tampa, Florida. 



LANDSHELLS. 



Pleurodonte bowdeniana Simpson. Neocyclotus (Ptychostylis) Bakeri Simp- 



*Stenogyra sp. son. 



Melaniella sp. *Truncatella sp. 



Lucidella costata Simpson. 



MARINE SPECIES. 



Cavolinia Vendryesiana Guppy. Cavolinia (Diacria), near trispinosa Le- 



Cavolinia digitata Guppy. sueur. 



Cavolinia ventricosa Guppy. Actaeon textilis Guppy. 



Cavolinia, near gibbosa Rang. Actaeon sp. 



