TRANSACTIONS OF WAGNER 



TERTIARY FAUNA OF FLORIDA 



meris, but the arrangement of the teeth differs somewhat. The American 

 fossil was referred to Micromeris by Conrad, but its hinge agrees exactly with 

 that of Hedley's type in all essentials. 



Subgenus Crassinella Guppy, 1875 (not of Bayle, 1879). Types Gouldia 

 paciHca C. B. Adams, and Crassatella martinicensis Orbigny. 



Shell minute, subtriangular, much compressed ; the umbones acute, sub- 

 central ; hinge with two cardinals in each valve, the lateral laminae developed, 

 the posterior left lateral lamellose behind the ligament ; ligament and resilium 

 internal ; inner margifis of the valves smooth. Formula l. o.iorioio^i_ 



Gouldia (sp.) C. B. Adams, 1847 (not of Bonaparte, 1850) ; Eriphyla Dall, 

 1879 (not of Gabb, 1869), and Pseuderiphyla Fischer, 1887, are synonymous. 



Genus Eriphyla Gabb, 1864. Type E. lunbonata Gabb. Chico Cretaceous of 

 California. 



Shell like Crassinella but with the ligament and resilium chiefly external. 



This genus bears nearly the same relation to Crassinella that Remondia 

 does to Crassatellites. Eriphylopsis Meek, 1876, is s_vnonymous. This group 

 so far as known is confined to the Cretaceous. 



Anthonya Gabb, 1864, is probably nearly related to Remondia, but is de- 

 scribed as having only two cardinal teeth in each valve. I have not been able 

 to compare specimens. It may bear to Remondia such a relation as Scambula 

 bears to the typical Crassatellites. 



Genus CRASSATELLITES Kruger. 

 Crassatellites Kruger, Arch, neuest Entd. Urwelt., ii., p. 466. 1823. Type C. sinuatus 



Kruger, ;= Crassatella gibhosida Lamarck, Ann. du Museum, vi., p. 410 {Ade Bronn, 



Index Paleont., i., p. 344, 1848). Eocene. 

 <^CrassateUa Lamarck, Syst. An. s. Vert., p. 119, 1801 (not of Lamarck, Prodrome, p. 



85, 1799- Type Alactra cygnea Chemnitz). 

 ^Pachytharus Conrad, Am. Journ. Conch., v., p. 47, 1869; Proc. Acad. Nat. Sci. Phila. 



for 1872, p. 50. Type Crassatella vindinnensis Orbigny, Pal. Frang., Terr. Cret., iii., 



p. 78, pi. cclxvi., fig.s. 1-3. Cretaceous. 

 ■^Scambula Conrad, op. cit., p. 48, 1869: p. 51, 1872. Type S. perplana Conrad, Am. 



Journ. Conch., v., p. 48, pi. ix., figs. 7-8, 1869. Upper Cretaceous. 

 -^Crassitina Weinkauff, Marl. Chemn. Conch. Cab. Neue ausg., Crassatella, p. i, 1881. 



Type C. contraria Gmelin. 



Lamarck's original type for Crassatella was a typical Mactra, the type 

 specimens of which, from the Chemnitz collection, are still preserved at Copen- 

 hagen. The next name in point of date is that of Kruger. 



