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TERTIARY FAUNA OF FLORIDA 



iPauliella Munier Chalmas, 1895. P. Bernardi M. C. 

 Cyamiomactra Bernard, 1897. C. problematic/} Bernard. 

 TTurtonia Alder, 1848. I'enus minuta Fabricius. 



SEUIS. 



Cyamium Philippi, 1845. C. antarcticum Philippi. 

 Sciobcretia Bernard, 1896. S. australis Bernard. 

 tffonfafUta Turton, 1822. Ligula substriata Montagu. 



Sections : Decifula Jeffreys, 1875. D. ovata Jeffreys. 



Orobitclla Dall, 1900. Montacuta Aoridana Dall. 

 A4tfgena H. C. Lea, 1845. Abra aquata Conrad. 



PSection : Spaniodon Reuss, 1867. S. nitidus Reuss. 

 Cycladclla Carpenter, 1865. C. papyracea Carpenter. 

 Asbiornscnia Friele, 1886. A. striata Friele.* 



FAMILY GALEOMMATID./E. 



Genus GALEOMMA Turton. 

 Galtomma Turton, Zool. Journ., ii., p. 361, 1825. Type G. Turtoni Brod. and Sby., loc. 



cit., p. 362, pi. 13, fig. I. 

 Parthcnope Scacchi, Oss. Zool., pp. 8, 19, 1833. Type P. formosa Scacchi (= G. Tur- 



toni Brod.) ; not Parthenope Fabr., 1798. 

 Galcomna Hanley, 111. Cat. Rec. Sh., p. 59, 1844 (err. typ.). 



Thyreopsis H. Adams, P. Z. S., 1868, p. 14. Type G. coralliophila H. Adams, loc. cit. 

 Lepirodes Fischer, Man. de Conchyl., p. 1031, 1887. Type G. formosum Desh. (not 



Lepyrodes Guen., 1854; Lepid.). 



Libratula Pease, P. Z. S., 1865, p. 512, sole ex. L. plana Pse., loc. cit. 

 Psammobia (sp.) Lamarck; Quoy and Gaimard. 

 Hiatclla (sp.) Costa, Ann. Sci. Nat., viii., p. 169. 

 Galeomma Deshayes, Expl. Algerie, Moll., i., Atlas, pi. 81-82; Mittre, Ann. Sci. Nat., 



3d Ser., vii., p. 169, pi. 5, figs. 1-8. 



This remarkable genus is represented by a type which has the mantle cover- 

 ing a large part of the valves, a thin amphidetic ligament, and a short, stout 

 resilium with the hinge-margin smooth or retaining traces of the provinculum. 

 The resilium is seated in a small chondrophoric pit, shallow or having its an- 

 terior and posterior margins somewhat projecting. In typical Galeomma the 

 shell has sharp radial sculpture; in Libratula it is smooth and the valves are 



* Referred by Friele to Tellinidcc following Jeffreys's advice, but possibly related to 

 Montacuta. 



