s4 
19, as broad as their interspaces, and most prominent near the suture; they are cur- 
ved in a somewhat sigmoid form and are sometimes, though rarely, isterrupted or have 
an intervening fold about the middle of the whorls. The striation of the surfarc has con- 
siderable resemblance of that of B. glaciale, the primary grooves heinz deep eut, with the 
intervening ridges depressed. But the grooving is far less regular than in that species, 
the primary grooves are more crowded near the suture and the ridges less latiened. The 
secondary grooves on the surface of the primary ridges are usually as fine as in B. gla- 
ciale, but often one or more of them become deeper, making the sculpture resemble more 
that of augulosum. Aperture oval, less than 1/, of ihe shell und narrower than in B. tenue. 
The eolumelia does not project beyond the level of the anterior part of the outer ip, but 
rather falls short. The eolumella shows the usual three folds, but the middle roid being 
nearly longitudinal and parallel to the lowermost fold, tha !atier cannot be seen in a front 
view, but it is easily seen in a edge view of the columella (in broken specimens of the 
shell) separated from the marginal middle fold by a longitudinal suleus. The Arst and 
second folds are separated by a brood deep sinus. Periosiraca thin, smeooth, not ciliated. 
Length 2,25, breadtk 1,2“. — Another speeimen is 2,2“ long, proportionally slender. 
Buccinum plectrum Stimpeor in the Canadian Naturalist 1865 p. 374. 
Aufenthalt im arclischen Ocean nördlich der Behringsstrasse bei 25—30 Faden 
Tiefe von Rodgers gedraktl. Auch bei den Anachi Islands an der Südseite von 
Alaschka von Ball geiunden. 
Anmerkung. Die mir von Dall übersandte Photographie war leider nicht son- 
derlich gelungen, doch wird sie genügen, um in Verbindung mit der ausführlichen 
Beschreibung Siimpsons eine Vorstellung von der interessanten hochnordischen Art 
zu geben. Sie hat, wie Simpson ganz richtig sagt, die Gestalt und auch ungefähr 
die Faitenbildung vou B. ienue, aber die Seulptur von glaciale. Jeffreys vereinigt sie 
mit B. Totteni, was mir der schiefen Falten wegen unthunlich erscheint. 
58, Buccinum castaneum Dall. 
Taf. 91. Fig. 8. S 
Shell large, clair chestnut brows, with whorls seven in number, inflated and smooth 
except for mieroscopic, celosely erowded revolving striae. Suture distinet, not chanelled. 
Apex rather acute, pointed. Columella straight, with a faint fasciole. Aperture wide, 
