Epidermis smooth, thin, yellowish, marked with very fine, wavy, revolving lines, much finer than those of Volutharpa, and not ciliated. Surface of the whorls smooth, but marked with rather evident lines of growth, which are raised into plicate rugosities near the suture, which is appressed and not canaliculated. Whorls inflated, amply rounded, solid, porcellanous and strong. Aperture elongate-ovate; outer lip thickened, broadly, elTusely arched. Periostome white. Throat of a muddy pink. Inner lip with a thin -callus, thicker on the columella, where it is colored with dash of deep pink. Columella twisted, broad, arched. Canal wide and shallow, very short. Color externally yellowish-pink, upper whorls a little livid, last whorl with a few indistinct revolving brown lines, frequently interrupted. Traces of obscure, revolving ridges appear in a few places on the last whorl. This shell has precisely the form of Volutharpa, but its noncanaliculated suture, solid texture, coloration, and general aspect confirm me in my belief that it is a true Buccinum. Long., 1.3; lat., .9 inches. (Dall.)
TYPE in United States National Museum. Type locality, St. George Island, Bering Sea.
RANGE. St. George Island, Pribilof group, Bering Sea.

This shell has precisely the form of Volutharpa, but its non-canaliculated suture, solid texture, coloration and general aspect confirm me in my belief that it is a true Buccinum. It is nearest to B. cyaneum, Brug., to which, for some time, I was disposed to refer it as a variety. Dr. Carpenter and Dr. Stimpson appeared to dissent from this view, and after a careful comparison of it with several hundred specimens of B. cyaneum, finding no specimens which appear intermediate in form, I have ventured to describe it. I should here remark that the B. cyaneum here alluded to (as identified with the eastern B. cyaneum, Brug., by Dr. Stimpson,) is perhaps the dwarf variety alluded to by him in his Review of the Northern Buccinums. At all events, none of the specimens from Alaska approach the large typical form in size, none exceeding an inch and a half in length. They are stated to have been described by Moeller as B. Humphreymanum (not of Bennet), and from specimens named by Mr. Cuming are the same as Volutharpa Moerchiana, Fisch., although the specimen figured is more depressed than the majority of specimens. I have, however, specimens from Sitka which exactly agree with it. Since the differences in size are so constant, and the large form has not yet been described from the North Pacific, it would, perhaps, be well to retain M. Fischer's name in a varietal sense, if, indeed, it be not specifically distinct from the large eastern cyaneum of Brugiere.
The Fischerianum differs from the var. Moerchianum, above referred to, in the absence of the regular grooves and revolving ridges which characterize that form, in its much more inflated shape and in the proportions of the spire, which is rather acuminated in the majority of specimens of Moerchianum, (though not in that figured by M. Fischer), in having, though a larger shell, a smaller number of whorls ; and in its more pleasing coloration especially of the aperture. The pattern of coloration is the same. The columella, too, is more arched and broader, and the canal shorter, wider, and more shallow than in the Moerchianum. I have another allied, but apparently undescribed, species, from Unalashka, which, as it is decorticated, I do not feel willing to characterize.

Location holotype: Pribiloff Ids., St. George's Island, Alaska, United States, North Pacific Ocean