326 PROCEEDINGS OF THE NATIONAL MUSEUM. 



nucleus ; suture distinct, spiral sculpture of a low narrow keel at the 

 shoulder and numerous flattish, close-set, usually paired or duplex 

 threads, uniformly covering the whole surface; incremental lines 

 inconspicuous; aperture wide, white, the outer lip thin, narrowly 

 reflected; body and pillar with a glaze of enamel; pillar short, 

 straight; canal wide, short, somewhat recurved, with a moderate 

 fasciole; operculum large, rounded triangular with subcentral nu- 

 cleus. Height of sliell, 86; of last whorl, 64; of aperture, 50; dia- 

 meter, 55 mm. U. S. Nat. Mus. Cat. No. 225248. 



Type-locality. — U. S. Fish Commission station 3643, in the western 

 part of Bering Sea, in 100 fathoms, gravel; bottom temperature, 

 31.7° F. 



Some of the specimens are destitute of the keel at the shoulder. 



BUCCINUM PLANETICIIM, new species. 



Female shell of moderate size, acute, with a distinct not constricted 

 suture and seven rounded whorls exclusive of the (lost) nucleus ; shell 

 of a v/arm buff color, the thin periostracum dehiscent; axial sculpture 

 of, on the upper whorls, about a dozen low obscure ribs only apparent 

 behind the periphery and absent on the last whorl; the lines of growth 

 are hardly perceptible; spiral sculpture of very fine close threads, 

 raised slightly into fasciculate bands of five or six threads, the inter- 

 spaces more distinctly defined on the base than behind the periphery ; 

 this sculpture covers the whole shell; the aperture wide, the margin 

 in the type-specimen deeply sulcate behind, hardly reflected, patu- 

 lous in front; body erased, ])illar nearly straight; canal very short, 

 wide, sharply recurved, with a feeble fasciole; height of shell 65; 

 of last v.'horl," 45 ; diameter, 35 mm. U. S. Nat. Mus. Cat. No. 223098. 



Type-locality. — U. S. Fish Commission station 3305, southwest of 

 Hagmeister Island, eastern Bering Sea, in 23 fathoms, sand; bottom 

 temperature, 41.8° F. 



This species seems common to the eastern littorale of Bering Sea, 

 from Nunivak Island to Bristol Bay, and recalls B. tenehrosimi 

 Hancock. 



BUCCINUM RONDINUM new species. 



Shell small, pale straw color, thin, with about five well-rounded 

 whorls, the nucleus eroded; suture distinct, not appressed; axial 

 sculpture of fine close minute incremental lines on which the perios- 

 tracum rises in minute, equal lamellae; spu-al sculpture of low minute 

 equal threads with equal or wider interspaces, over the whole surface; 

 aperture with outer lip simple, arcuate, with the extreme margin 

 slightly expanded; inner hp white, erased; pillar short, thin, twisted; 

 canal v/ide, deeply excavated, hardly differentiated; height of shell, 

 20; of last whorl, 16; of aperture, 11; diameter, 11 mm. U. 3. 

 Nat. Mus. Cat. No. 110534a. 



