FREE INSTITUTE OF SCIENCE 



TERTIARY FAUNA OF FLORIDA 



I [ 19 



Pauliella Munier Chalmas, 1895. P. Bcniardi M. C. 

 Cyamiomactra Bernard, 1897. C. problc^iiatica Bernard. 

 fTurtonia Alder, 1848. Feiius minuta Fabricius. 



Incert^ Seuis. 

 Cyamium Philippi, 1845. C. antarcticum Philippi. 

 Scioberetia Bernard, 1896. 5". australis Bernard. 

 Montacuta Turton, 1822. Ligula substriata Montagu. 



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



Orobitella Dall, 1900. Montacuta Aoridana Dall. 

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



PSection : Spaniodon Reuss, 1867. 5'. nitidus Reuss. 

 Cycladella Carpenter, 1865. C. papyracea Carpenter. 

 Asbiornsenia Friele, 1886. A. striata Friele.* 



Family GALEOMMATID^. 



Genus GALEOMMA Turton. 



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



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

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

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

 Galeomna 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 Conchy!., 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. 

 Hiatella (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 Tcllinida: following Jeffreys's advice, but possibly related to 

 Montacuta. 



