I48 SMITHSONIAN MISCELLANEOUS COLLECTIONS [VOI,. 5C 



with a lemon-yellow suffusion ; canal wide, deep, producing a weak 

 fasciole ; operculum thin, pale, the nucleus nearly central. Lon. of 

 shell, 48 ; of last whorl, 33 ; of aperture, 24 ; maximum diameter, 

 25 mm. 



In Aniwa Bay, at the south end of Sakhalin Island, at station 

 5012, in 40 fathoms. U. S. Nat. Alus., 110,528. 



Remarkable for its minute, fine, sharp, uniform sculpture. 



BUCCINUM SAKHALINENSE Dall, n. sp. 



Shell small, solid, acute, grayish olive, with about seven rapidly 

 increasing whorls ; axial sculpture of (on the penultimate whorl 

 about 15) obliquely arcuate, strong rounded ribs, beginning at the 

 suture and becoming obsolete at or near the periphery, on the last 

 whorl weaker and more irregular; spiral sculpture of numerous 

 close, ill-defined, revolving ridges, of which on the last whorl about 

 six are more conspicuous than the others, but all are sharply mi- 

 nutely spirally grooved, the larger ridges having from three to five 

 grooves each ; the whole is crossed by minute, crowded, slightly 

 elevated, distinct incremental lines ; aperture white, outer lip slightly 

 expanded ; body and pillar with a moderate callus ; pillar short, its 

 anterior edge distinctly twisted ; canal wide, deep, recurved, forming 

 a strong fasciole, with a low sharp keel at its posterior edge ; opercu- 

 lum with the nucleus nearly central. Lon. of shell, 36 ; of last whorl, 

 26; of aperture, 20; maximum diameter, 21 mm. 



Station 5010, Aniwa Bay, Sakhalin Island, in 21 fathoms. U. S. 

 Xat. Mus., 110,529. 



This has somewhat the aspect in miniature of B. undatum; it is 

 probable that when the shell is fully mature the outer lip is con- 

 siderably thickened. 



BUCCINUM ECTOMOCYMA Dall, n. sp. 



Shell large, thin, acute, olivaceus, with a claret-colored nucleus 

 and about six whorls ; suture distinct, almost appressed ; in front 

 of it the whorl is, as it were, pinched up into short, irregular, strong - 

 waves (about 12 on the last whorl), too irregular in form and direc- 

 tion to be called ribs, usually not reaching the periphery; there are 

 also elevated minute incremental lines at intervals on which the 

 otherwise closely adherent periostracum is slightly produced ; spiral 

 sculpture of two or three major spiral ridges, one (sometimes obso- 

 lete) at the shoulder, another bordering the base, and a feebler one 

 or two on the base ; beside this the whole surface is finely sharply 

 grooved and the corresponding raised interspaces are fasciculated in 



