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760 



TERTIARY FAUNA OF FLORIDA 



This genus differs from Lima by having on each side of the resilium a 

 number of taxodont teeth on the cardinal margin. 



Limeea solida n. s. 

 PI.ATK 3;, FIGURES 4, 5. 



Oligocene of the Bowden beds at Bowdcn, Jamaica ; Henderson and 

 Simpson. 



Shell minute, solid, rounded triangular, with about twelve rounded, 

 strong, slightly granular radial ribs, separated by narrower interspaces 

 crossed by lines of growth ; submargins without radial sculpture; hinge-line 

 short, with a small central pit, on each side of which are about eight teeth ; 

 interior radially feebly grooved, the basal margin crenulated by the ribs ; 

 shell moderately inflated. Alt. 3.5, lat. 3.3, diam. 2.5 mm. 



This little shell is related to the L. Bronniaiia Ball of the recent fauna, 

 but is distinguished from it by its narrower and more solid hinge, with a dis- 

 tinctly smaller resiliary pit and heavier and more solid shell. 



Besides the species above discussed, the following members of this family 

 have been reported from our Tertiaries. 



From the Chickasawan or Lignitic Harris has described L. (Manicllitiii) 

 ozarkana, from Ozark, Alabama (Bull. Pal., ix., p. 43, pi. 6, fig. 12, 1897). 



Gabb has described a Lima inultiraJiata from the California Eocene, 

 between the Tejon and Martinez groups at Lower Lake, Lake County (Pal. 

 Cal., ii., p. 261, pi. 33, fig. 101, 1868), which Cooper <ilso reports from Santiago 

 Canon, Santa Anna Mountains, Los Angeles County. 



From the Miocene of Costa Rica Gabb described (Journ. Acad. Nat. 

 Sci. Phila., 2d. Ser., viii., p. 348, pi. 45, fig. 26, 1875) L. (Maiitflluui) papyracca, 

 and Cooper cites the recent L. (Mantellum) ticliisccns Conrad, from the Pliocene 

 of Santa Barbara, California. 



Superfamily ANOMIACEA. 

 FAMILY ANOMIID^E. 



In Ephippium scllti Gmel., while the nepionic shell is doubtless (as in 

 Aiioinia) essentially symmetrical and without any byssal notch or foramen, it 

 very early initiates one, with a distinct plug, and then again discards it, so 

 that in the adolescent or adult shell the traces of the process are frequently 

 obliterated. We have in this case the singularity of a shell taking on a very 

 radical modification and then reverting to what is, in the main, its earlier con- 



