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1247 



TERTIARY FAUNA OF FLORIDA ^' 



Paphia Woodward, Man., p. 299, footnote, 1853 (not of Lamarck, 1801, = Crassatella 



contraria Lam.). 

 <;_^ Gouldia C. B. Adams, Cat. Coll., p. 29, 1847; Thetis cerina Adzms; ^Thetis 



Adams, 1845 ; not Sowerby, 1826 ; not Gouldia, Bonaparte, Aves, 1850. 

 "^Gouldia Dall, P. Z. S., 1879, p. 131; G. cerina Adams; Tryon, Syst. Conch., iii., p. 



179, 1884; Fischer, Man. de Conchyl., p. 1080, 1887; Bucquoy, Dautzenberg, and 



Dollfus, Moll, de Roussillon, ii., p. 334, 1893. 

 Circe (sp.) Deshayes, Cat. Conch. Brit. Mus., i., pp. 88-90, 1853, and of numerous other 



authors. 

 Cista Carus, Prodr. faun. Medit., ii., p. 124, 1889 ( ?err. typ. for Crista). Venus pectinata 



Linne; not Cista Hiibner, 1816, Lepidoptera. 



Contrary to my impression while revising the Lucinacea, I find that the 

 name of Bolten must be retained for the group commonly known as Crista 

 Romer, as I have explained under the head of Cytherea Bolten. 



This group has short, papillose siphons, the mantle-edge more or less 

 fringed, and the usual geniculate foot. It is not positively known earlier than 

 the Tertiary. The species referred to it from Mesozoic horizons probably 

 should be referred to Cyprimeria. 



The genus may be divided into two closely allied subgenera, Gafrarium 

 s. s. and Circe. A passage towards Meretrix is found in the group named 

 Lioconcha by Morch, which was formerly included under Circe by some 

 writers. 



Subgenus Gafrarium Bolten. Type Venus pectinata Linne. 



Dental formula: L- o.ioioio.oiq ^ Shell equivalve, subequilateral, with a simple 

 or slightly sinuous pallial line, simple or partially faintly grooved cardinal 

 teeth, surface more or less sculptured. 



Subgenus Gafrarium s. s. 



Surface with strong, chiefly radial, more or less dichotomous sculpture, 

 with the posterior slope sculptured differently from the rest ; valves moderately 

 convex, the umbones subcompressed with a narrow lunule and feebly defined 

 escutcheon ; pallial line simple ; the inner margins of the valves crenulate ; the 

 ligament sunken but not covered over ; the left middle cardinal tooth feebly 

 grooved. 



Section Gouldia C. B. Adams. 



Surface reticulately sculptured, the radials more conspicuous towards the 

 ends of the valves and the concentric sctilpture in the middle ; no specialized 



