22 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 66 



sharp, thin varices, creniilate at the edge, guttered and produced at 

 the shoulder; there is one small hump bet\Yeen the varices, but the 

 rest of the axial sculpture is obscure; spiral sculpture of the ridge 

 at the shoulder and eight minor ridges between the shoulder and the 

 canal, chiefl}^ noticeable on the varices; aperture subovate, with no 

 tooth at the margin; canal closed, short, strongly recurved; height, 

 32; maximum diameter. 25 mm. U. S. Nat. ]\Ius. Cat. No. 110773. 



Dredged by the United States Bureau of Fisheries steamer Alba- 

 tross in Kagoshima Gulf, Japan, in 103 fathoms, at station 4935. 



This species belongs to the group of 31. speciosa Adams and 

 Reeve, and not to the group v\ith toothed aperture like 31. hurnetti. 



NEPTUNEA ALASKANA Dall 



Plate 22, fig. 3 



Boreotrophun ala.-ikana^s Dall, Proe. U. S. Nat. Mus., vol. 24, p. 545, 1902. 

 Bering Sea, north of Unalaska, in 225 fathoms. U. S. Nat. Mus. Cat. No. 

 122594. 



NEPTUNEA GORGON Dall 



Plate 23, fig. 1 



Boreotrophon gorgon Dall, Proc. U. S. Nat. Mus., vol. 45, No. 2002, p. 588; 

 June, 1913. 



Dredged by the United States Bureau of Fisherie.s steamer Albatross, off 

 Hondo, Japan, at station 3698, in 153 fathoms, mud, bottom temperature 65° F. 



The shell is 42 mm. in length and of a waxen white color. U. S. Nat. Mus. 

 Cat. No. 110771. 



NEPTUNEA (TROPHONOPSIS) MACLAINI Dall 



Plate 21, fig. 11 



Boreotrophon maclaini Dall, Proc. U. S. Nat. Mus., vol. 24, p. 538, 1902. 

 Baflin Bay, off Greenland. U. S. Nat. Mus. Cat. No. 126974. 



This shell is immature. 



NEPTUNEA PANAMENSIS Dall 



Plate 21, fig. 4 



Boreotrophon paymmcnsis Dall, Proc. U. S. Nat. Mus., vol. 24, p. 546, 1902. 

 Off Panama Bay, in 1,270 fathoms. U. S. Nat. Mus. Cat. No. 123021. 



NUCULA MIRIFICA Dall 



Plate 29, figs. 4, 10 



Kvcula miriflca Dall, Smithsonian Misc. Coll., vol. 50, p. 170, 1907. 



Off the south coast of Yesso, Japan, in 269 fathoms. U. S. Nat. Mus. Cat. 

 No. 110463. 



This is probably the largest smooth recent Nucula know^n, though 

 the Japanese species of Acila reaches a still greater size. 



