24 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 66 



PSEUDAMUSIUM ARCES Dall 



Plate 27, fig. 4 



Pseudamusium arces Dall, Proc. U. S. Nat. Mus., vol. 45, p. 593, 1913. 



Off Santa Cruz Island, Calif., in 534 fathoms. U. S. Nat. Mus. Cat. No. 

 267169. 



PUNCTURELLA CUCULLATA Gould 



Plate 26, fig. 6, 8 



Puncturella cuctiUata Gould, Proc. Boston Soc. Nat. Hist., vol. 2, p. 159, 1846. 

 Off the coast of Washington in 66 fathoms. U. S. Nat. Mus. Cat. No.. 106866. 



PUPILLARIA ROSSICA Dall 



Plate 25, fig. 1 



Margarites (Pupillaria) rossicus Dall, Proc. U. S. Nat. Mus., vol. 56, p. 365, 

 1919. 

 Aniwa Bay, Sakhalin Island. U. S. Nat. Mus. Cat. No. 111046. 



PUPILLARIA STRIATA Broderip and Sowerby 



Plate 25, fig. 6 



Margarita striata Broderip and Sowerby, Zool. Joum., vol. 4, p. 371, 1829. 

 Walter Thymen's fiord, Spitsbergen. U. S. Nat. Mus. Cat. No. 109460o. 



PHOLADOMYA PACIFICA Dall 



Plate 29, figs. 8, 9 



Pholadomya pacifica Dall, Smithsonian Misc. Coll., vol. 50, p. 115, 1907 ; Nau- 

 tilus, vol. 22, pp. 115, 142, 1909. 

 Off Hakodate, Japan, in 44 fathoms. U. S. Nat. Mus. Cat. No. 110545. 



PLICATULA GIBBOSA Lamarck 



Plate 27, figs. 6, 7 



PlicatuJa gibbosa Lamarck, Syst. An. s. Vert., p. 132, 1801. 

 Plicatula ramosa Lamarck, Anim. s. Vert., vol. 6, p. 1S2, 1819. 

 Florida. U. S. Nat. Mus. Cat. No. 102895. 



PLICIFUSUS ARCTICUS Philippi 



Plate 22, fig. 4 



Fusus arcticus Philippi, Abb. u. Beschr., vol. 3, p. 119, pi. 5, fig. 5, 1850. 

 Bering Sea. U. S. Nat. Mus. Cat. No. 122678. 



PLICIFUSUS (HELICOFUSUS) AURANTIUS Dall 



Plate 32, fig. 1 



Tritonofusus {Plicifusus) aurantius Dall, Smithsonian Misc. Coll., vol. 50, 

 p. 160, 1907. 

 Sea of Japan, in 390 fathoms. U. S. Nat. Mus. Cat. No. 110490. 



