TRANSACTIONS OF WAGNER 

 I I 12 



TERTIARY FAUNA OF FLORIDA 



Mohr, Isl. Naturh., p. 129, 1786; Gmelin, Syst. Nat., p. 3252, 1792; Spengler, Mag. 



Ges. Naturf. Freunde zu Berlin, ii., p. 126, 1808; Wood, Gen. Conch., p. 227, 1815; 



Dillvvyn, Cat. Rec. Sh., i., p. 129, 1817; Lamarck, An. s. Vert., vi., i., p. 13, 1819; 



Gould, Inv. Mass., p. 92, 1841 ; Moller, Ind. Moll. Gronl., p. 20, 1842 ; Morch, Fort. 



Gronl. Bloddyr, p. 20, 1857. 



Mactra radiata Donovan, Brit. Sh., v., p. clxi., 1799; Turton, Conch. Diet., p. 80, 1819. 

 Cardium cdentulum Montagu, Test. Brit. Suppl., p. 29, 1808; Sowerby, Genera Sh., pt. 



34, fig. 2, 1831. 



Cardium radiatum Gray, App. Parry's Voy., p. 244, 1824. 

 Aphrodite colutnba Lea, Trans. Am. Phil. Soc., N. S., v., p. 111, pi. xviii., fig. 54, 1834; 



Obs. Gen. Unio, i., p. 223, 1837. 

 Cardium boreale Reeve, Conch. Icon., ii., Cardium, pi. xxii., fig. 131, 1845; not f Bro- 



derip and Sowerby, 1829. 



Cardium Fabricii Deshayes, P. Z. S., 1854, p. 333. 

 Cardium gronlandicum Middendorff, Mai. Ross., iv., p. 41, pi. 16, figs. 6, 7 (not figs. 8, 9), 



1849. 



Acardo edentulum Swainson, Malac., p. 374, 1840. 

 Serripes gronlandicus Beck, in Gould, Inv. Mass., p. 93, 1841 ; Morch, Yoldi Cat., ii., p. 35, 



1853; H. and A. Adams, Gen. Rec. Moll., ii., p. 456, 1857; Dawson, Notes on Post- 

 Pi, of Canada, p. 77, 1872. 



Pleistocene of Quebec and along the St. Lawrence River ; Lawlor's Lake, 

 New Brunswick; Labrador; Cape Elizabeth and Portland, Maine; the coast 

 of Alaska and southward to the vicinity of Puget Sound ; recent throughout 

 the Arctic seas and south to Cape Cod on the Atlantic and to Puget Sound 

 on the Pacific side. 



This species occurs in a recent state in vast numbers on muddy bottom 

 and is one of the species most consumed by the walrus in boreal seas. It 

 varies considerably in relative length and height, and in th'e extension of the 

 radial sulcations, which are almost always absent from the middle of the disk. 

 The name Fabricii was given to a short, heavy mutation of the typical shell, 

 while the more elongate variety was left nameless by Deshayes, who probably 

 had the facts reversed in his mind by some accident. The elongate variety 

 might be called var. protractus. 



Serripes Laperousii Deshayes. 



Cardium Laferousii Deshayes, Revue Zool. Soc. Cuv.. p. 360. 1839: Mag. Zool., pi. 48. 



1841 ; Carpenter, Rep. Brit. Assoc., 1856, pp. 203, 207 : Suppl. Rep. Brit. Assoc., 



1863, p. 528; Moll. West. N. Am., p. 14, 1872. 

 Cardium (fScrrifes) Laperousii Dall, Am. Journ. Conch., vii., p. 148, 1871. 



