TRANSACTIONS OF WAGNER 

 1364 



TERTIARY FAUNA OF FLORIDA 



as among the species still living which occur in the upper Miocene of the 

 Natural Well in Duplin County, North Carolina. In the extensive collections 

 made at this locality by Burns and others it has not been found, and I am 

 inclined to regard the identification of Conrad as due to some mixture of speci- 

 mens or error of naming. 



Submenus HERE Gabb. 



This group is profusely represented in the Eocene, where it may be ob- 

 served that the species in some cases exhibit a very exceptional variability in 

 surface sculpture as well as outline, and suggest in their variations the sub- 

 divisions which only become differentiated permanently later in the history of 

 the family. A number of these species were named almost simultaneously by 

 Conrad and Lea. The former gave brief diagnoses of a few lines only without 

 measurements or figures, and in some cases the forms intended are uniden- 

 tifiable. Lea, on the other hand, gave careful descriptions and excellent figures. 

 In the cases where no identifiable figure or description was given by Conrad 

 until after the publication of Lea's " Contributions to Geology," it would seem 

 that both the rules of justice and of nomenclature require the retention of Lea's 

 name. 



Phacoides (Here) pomilius (Conrad, 1833) is identical with Lucina im- 

 pressa Lea, 1833; L. pompilia (lapsus) Conrad, 1866; L. bisculpta O. Meyer 

 (young), 1886; L. sublcevigata Gregorio, 1890; L. postsulcata Gregorio, 1890, 

 and L. arnica Gregorio, 1890. It is Claibornian and earlier. P. (H.) cariniferus 

 (Conrad, 1833) has for synonym Lucina cornuta Lea, 1833, also Claibornian. 

 P. (H.) dolabra (Conrad, 1833) is the same as Astarte recurva Lea, 1833, with 

 the preceding. 



Of the section Cavilucina, P. alveatus (Conrad, 1833) is identical with 

 Lucina lunata Lea, 1833, -(- Lucina nwdesta (Conrad, 1846, young), -f- Lucina 

 subcuneata Gregorio, 1890. P. rotundus (Lea, 1833, -f- L. symmetrica Conrad, 

 1833, n t identifiable from original description). Both are Claibornian and 

 Chickasawan. A third species from the Aquia formation of Virginia is P. 

 aquianus (Clark, 1895), of which P. Greggi Harris, 1897, seems to be a variety 

 from the Chickasawan of Alabama. 



Phacoides (Here) hamatus n. sp. 



PLATE 50, FIGURE 9. 



Eocene of the lower bed at Claiborne Bluff, Alabama ; Lea. 

 Shell small, plump, with small, high, prosogyrate beaks ; dorsal areas 

 strongly emphasized by an impressed sulcus on their ventral margins which 



