TRANSACTIONS OF WAGNER 

 1496 



TERTIARY FAUNA OF FLORIDA 



I agree with Dr. Whiteaves, of the Canadian Geological Survey, that this 

 Pleistocene species is not exactly represented by any recent form of the region 

 and have applied to the recent shell, which has usually been called laurentiana, 

 the specific name of soror. The present species is the only one I have seen 

 which is peculiar to the east American Pleistocene beds, the others found in 

 them being also known in the recent state. 



Astarte striata Leach, better known as A. Banksii of authors but not of 

 Leach, is reported as abundant in the Pleistocene of Portland, Maine ; the St. 

 Lawrence valley; St. John, New Brunswick; Labrador, and Greenland. 



Astarte elliptica Brown, A. arctica Gray, A. borealis Schumacher, on the 

 eastern coast, and A. arctica Gray, A. borealis Schumacher, and A. alaskensis 

 Dall, on the western coast of boreal America, occur in the various Pleistocene 

 deposits and the last mentioned in the beds on Sucia Island, Gulf of Georgia. 

 These are all boreal species, but Astarte undata Gould and A. castanea Say 

 are reported from the Pleistocene of Point Shirley, Massachusetts ; the latter 

 also at Nantucket and the former at Gardiner's Island, near New York. 



Subgenus GOODALLIA Turton. 



Astarte (Goodallia?) americana n. sp. 



PLATE 56, FIGURE 5. 



Eocene of the Claiborne sands, Claiborne, Alabama ; L. C. Johnson. 

 Shell small, compressed, nuculoid in form, anterior slope short, directly 

 descending, posterior longer, arcuate ; base arcuate, beaks low, lunule lanceo- 

 late, impressed, escutcheon obscure ; surface finely concentrically striated ; 

 hinge of left valve with two diverging cardinals, inner margins smooth. 

 Length 4.0, height 3.25, diameter 1.5 mm. 



A single, somewhat worn left valve is all that we possess of this species. 

 The form is very different from that of the Parisian species, but the hinge 

 appears to be the same, the anterior tooth having been broken off and only 

 its base remaining. The pallial line is certainly unsinuated, and, taking all the 

 circumstances into consideration, it seems probable that this species should be 

 referred to Goodallia, though it has somewhat the aspect of a Leptonaceous 

 shell. 



Superfamily CYPRICARDIACEA. 



FAMILY PLEUROPHORID^. 

 Genus TRAPEZIUM (Humphrey) Miihlfeld. 



Trapezium (Anonymous) in Humphrey's Mus. Calonn., p. 50, 1797; Megerle von Miihl- 

 feld, Ent. Neuen. Syst. Mag. d. Ges. Naturf. Freunde zu Berlin, v., p. 68, 1811. 



