TRANSACTIONS OF WAGNER 

 628 



TERTIARY FAUNA OF FLORIDA 



early thirties made some paleontological collections in Virginia and the 

 adjacent parts of North Carolina. Some of the species appeared to be new 

 and were named and figured by Professor Wagner, who had three fairly good 

 lithographic plates prepared, of which a certain number were distributed. In 

 Bronn's Index Paleontologicus Wagner's names are catalogued and the plate 

 references given. A large number of copies of the prints and some of the 

 original type specimens are still in existence and in the possession of the 

 Wagner Institute. Among them are two Areas, both of which appear to be 

 good species, not otherwise named, and which will be included in this paper. 



Area virginicB is a large, solid, elongated shell, equivalve but very inequi- 

 lateral, the beaks being situated near the anterior fifth of the length, low and 

 prosogyrate, distant, and separated by a wide cardinal area with numerous 

 (nine) slightly angular longitudinal concentric grooves ; sculpture of about 

 twenty-five strong radial ribs, smaller on the posterior dorsal area, somewhat 

 flattened, and on the posterior part with a shallow, wide mesial furrow ; hinge- 

 line \\ as long as the shell ; teeth vertical, in two series, beginning mesially 

 very small, distally larger, and with a tendency to break up or become irregu- 

 lar; muscular impressions deep; margin fluted in harmony with the ends of 

 the ribs. Lon. 83, alt. 52, diam. 42 mm. 



This shell is about midway in its characters between Barbatia [Grano- 

 arca), Anadara, and Scapharca, illustrating very well the manner in which the 

 subordinate groups of the genus Area intergrade. It seems quite surprising 

 that so large and conspicuous a shell should not have been collected and 

 described by other paleontologists. 



Section Striarca Conrad. 



Barbatia (Striarca) centenaria Say. 



Area eentenaria Say, Journ. Acad. Nat. Sci. Phila., ist Ser., iv., p. 138, pi. 10, fig. 2, 



1S24. 

 ■Striarca centenaria Say, Proc. Acad. Nat. Sci. Phila. for 1862, p. 580, 1863. 



Older Miocene of Jericho, Cumberland County, New Jersey, and in the 

 Virginia Miocene at Coggin's Point, Petersburg, Grove Wharf, on the James 

 River, and the Miocene beds of the York River; Burns and others. 



This is a remarkably characteristic shell, and I believe has no synonymes. 

 The erosion which acts upon fossils has in nearly all cases hollowed out the 

 teeth, so that they look as if naturally grooved or hollow, and in the exam- 

 ination of many specimens only one or two were found in which any large 



