ART. 18 SMALL SHELLS DREDGED BY '* ALBATROSS " DALL 13 



edges of the valve. Length, 3.5; greatest vertical measure, 2.75; 

 diameter, 2.2 mm. U. S. Nat. Mus. Cat. No. 108179. 



Off Fernandina, one value. 



This is nearest to B. frielei Jeffreys, but is smaller and relatively 

 longer. Its form recalls Dacrydium vitreum. 



Family PECTINIDAE 



Genus PECTEN Miiller 



Subgenus PsEUDAMUSlUM Adams 



PSEUDAMUSIUM NANUM Verrill and Bush 



Cyclopecten nanus Verrill and Bush, Trans. Conn. Acad., vol. 10, pp. 85, 

 92, pi. 16, figs. 12, 12 c, 1897; Proc. U. S. Nat. Mus., vol. 20, No. 1139, 

 p. 837, pi. 85, figs. 2-4, 1898. 



Off Fernandina, three valves. Atlantic coast to North latitude 37° 

 in 43 to 132 fathoms, United States Fish Commission. 



Subgenus Propeamusium Gregorio 



PROPEAMUSIUM POUUTALESIANUM Dull 



Amusium {Propeamusium) pourtalesianum Dall, Bull. Mus. Comp. Zool., 

 vol. 12, No. 6, p. 211, pi. 4, fig. 3; pi. 5, fig. 12, 1886. 



From off Fernandina and the Gulf of Mexico south to the lesser 

 Antilles, in depths living, from 13 to 805 fathoms, and temperatures 

 from 39.5° to 82.5° F. 



Family LIMIDAE 



Subgenus Limatula S. Wood 



LIMATULA LAMINIFERA E. A. Smith 



Lima (Limatula) laminifera E. A. Smith, Challenger rept. Pelecypoda, p. 293, 

 pi. 24, figs. 7, 7 a., 1885. 



Off Fernandina, one valve. Off Sombrero, in 450 and off Culebra 

 in 390 fathoms, Challenger expedition. 



Genus LIMAEA Bronn 



LIMAEA BRONNIANA Dall 



Limaea bronniana Dall, Bull. Mus. Comp. Zool., vol. 12, No. 6, p. 226, 

 1886; Proc. U. S. Nat. Mus., vol. 12, p. 251, pi. 14, fig. 9, 1889. 



Off Fernandina, one valve. North Carolina to Barbados in 15 to 

 804 fathoms; United States Fish Commission. 



