52 Bulletin 34 84 



1, 1808, (as Venus)\ Dall, Proc. U. S. N. M., 23, p. 799, 

 1901 ; Tr. W. I., 3, p. 1350, '03. 



LiiciJia squamosa Lamarck, An. s. Vert., 6, p. 542, 1818 

 (not Lam., 1806); Dall, Bull. 37, U. S. N. M., p. 50, '89. 



Liicina peden Lamarck, An. .s. Vert., 5, p. 543, r8i8 ; Dall, 

 Bull. 37, p. 50, '89. The true L. peden is Mediterranean. 



Ludna imbricatula C. B. Adams, Proc. Bost. Soc. N. Llist., 



2, p. 10, 1845. 



Note. — Dr. Dall (Sj^nopsis Lucinacea), recognizes four varieties 

 of this species : — orbiculata Montagu, filiata Dall, imbrica- 

 tula C. B. Adams, and r^ecurvata Dall. Our specimens 

 from Cedar Keys seem typical orbiculata. The deep water 

 form, Jilicata, 85-300 fms. , was dredged off Yucatan, and 

 recurvata, 8-300 fms., off Cape San Antonio. 



Distribution. — Florida to Brazil, also west coast Africa. Pleis- 

 tocene to Recent. Gulf coast. — Tampa and Cedar Keys, 

 Florida. 



(Jagonia) costata d'Orbigny, Moll. Cubana., 2, p. 296, pi. 27, 

 f. 40-42, 1846, {2LS Lucina); Dall and Simpson, Bull. U. S. 

 Fish Comm., i, p. 492, 1901 ; Dall, Proc. U. S. N. M., 23, 

 P- 799. 1901. Not ft'^/<2/a Tuomey and Holmes. 

 Lucina antillariun Reeve, Conch. Icon., Liuina, pi. 10, f. 

 37, 1850; Dall, B. M. C. Z., 9, p. 136, '81 ; 12, p. 264, 

 1886. 

 Distribution. — N. Carolina to Rio de Janeiro. Gulf of Mex- 

 ico : Charlotte Harbor, Fla., 13 fms., Yucatan Strait, 640 

 fathoms. 



Genus PHACOIDES Gray 

 pectinatus Gmelin, Syst. Nat., 6, p. 3236, 1792 ; Index Test., pi- 

 4, f. 44, 1828, (as Tellina pedi?tata); Dall, Proc. U. S. N. 

 M., 23, p. 807, 1901 ; Tr. W. I. 3. p. 1363, '03. Not of 

 Adams, '47 and '52, nor of Carpenter, '57. 

 jainaice7isis Chemnitz, Conch. Cab., 7, p. 24, pi. 39, f. 408, 

 409, 1784, (as Venus'). Not binomial. Spengler, Skrift. 

 Nat. Selsk. Kjobii. 4, 1778, (as Telliua); Lamarck, An. s. 



