188 BUCCINUM. 



liratus, and were passed over as such by me, in the field. After- 

 wards, when the carinse and lip are fully formed, they look like 

 brown B. glaciale of the carinated form. On examination, the 

 sculpture was found to be essentially different, and by that alone 

 its connection with B. castaneum is surmised. It is found in the 

 Western Aleutians only, and was caught with bait in five fathoms. 

 No intermediate specimens have been observed. Length S'OS 1 

 inches, width 1-5 inches ; aperture long, 1'25 inches ; wide, -9 inch. 

 The lip is less thickened than the typical B. castaneum. 



The above is a copy of Dall's description. I am unacquainted 

 with the species. 



B % CYANEUM, Brug. PI. 76, figs. 331-342 ; PL 78, fig. 375. PI. 

 19, figs. 377-380. 



Shell thin, whorls six to eight, not very convex, flattened near the 

 suture, and generally smoother than in any other species ; longi- 

 tudinal folds, when they exist, ten to fifteen, straight, extending 

 very little below the suture ; primary spiral ridges rounded, not 

 flattened, very narrow and distant, about fourteen on the lower 

 whorl, often obsolete, but sometimes sufficiently prominent to 

 form angles rather than ridges ; secondary ridges, when present 

 about five to each primary ridge and groove taken together. 

 Colors bright but variable, usually bluish with chestnut-brown 

 revolving lines or series of spots or patches : sometimes brown 

 with white spots. Periostraca smooth or short-ciliated. 



Length, l-2'3 inches. 



Greenland) Norway, Lapland, Behring" 1 s Straits. 



An arctic species ; occurs fossil in the pleistocene of Riviere- 

 du-Loup, Canada. A number of authors apply to this shell the 

 name Grrcenlandicum, Chemn., which I do not adopt because 

 Chemnitz was not a binomial writer, and Gf-rcenlandicum is only 

 a portion of his compound designation of the species. 



I figure a variety patula, Sars. (fig. 332), which appears to cor- 

 respond with the dwarf variety of Stimpson ; also Neptunea 

 Baerii, Midd. (fig. 377), which is a marked, short, convex 

 variety. The following species described by Hancock, are all 

 synonymous with cyaneum, viz. : B. hydrophanum, Hanc. (figs. 



