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765 



TERTIARY FAUNA OF FLORIDA 



FAMILY LIMID^E. 



Genus LIMA (Bruguiire) Cuvier. 



Lima Bru^iiiere, Enc. Moth., pi. 206, 1792; name only, no type; Cuvier, Tabl. Elem., 



p. 421, 1798 : type Ostrea lima L. , Lam. Prodr., p. 88, 1799. 

 Mantfllinn Holten, Mus. Bolt., p. 160, 1798. 

 I.iiiitiria Link, Beschr. Rostock Samml., p. 157. 

 (,7iii/iiti a Oken, Xool., i8i$,Ji</i' Herrmannsen. 

 Radiila H. and A. Adams, Gen. Rec. Moll., ii., p. 556, 1858; not Radiila Gray, Syn. 



Br. Mus., p. 60, 1844. 



Ctcnoides H. and A. Adams, op. cit., p. 557, 1858; L. scabra Born. 

 Act-stii II. and A. Adams, op. cit., p. 558, 1858; L. cxcavata Chemn. 



This very natural group indicated by Bruguiere derived its name from the 

 nonbinomial writers, but was first defined and a type mentioned by Cuvier. 

 Bolten named it without a diagnosis in the same year, and Link a. few years 

 later corrected the form of the name, after his habit. The nonbinomial names 

 of Klein were habilitated by H. and A. Adams, but take date only from their 

 work. 



The group is divisible as follows : 

 Subgenus Lima s. s. Hinge edentulous; valves gaping, inequilateral. 



Section Lima s. s. Sculpture radial, submargins impressed. L. lima Linne. 



Section Ctcnoides Ads. Sculpture divaricate, submargins impressed. 

 L. scabra Born. 



Section Plagiostoma Sowerby, 1814. Sculpture feeble, radial; valves 

 subtriangular, with a deep resiliary pit. L. gigaiitca Sowerby. 



Section Mantelhun Ads. Submargins not impressed. L. hians Gmel. 

 Subgenus Limatula Searles Wood, 1839. Valves closed, equilateral, more or 



less distinctly mesially sulcate ; sculpture radial. L. sitbanricnlata Mtg. 



The group is quite ancient, and attained its climax in the Mesozoic ; the 

 Tertiary species are relatively few and rare. I have omitted some of the 

 older forms from the list as hardly in place here. 



Lima (Lima) vicksburgiana n. s. 



Tl.ATK 35, FlOURK 20. 



Vicksburgian Oligocene, at Johnson's lime-sink, Levy County, and at La 

 I'cnotiere's hammock, near Orient, Florida ; Dall. 



Shell of moderate size, hardly oblique, moderately gaping, elongate, 

 radially sculptured, with thirty-five or more nearly simple radial ribs, sepa- 



