118 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
spaces narrow and weakly impressed. Sutures well-rounded. Periphery 
and base of the last whorl well-rounded, the latter marked by continuations 
of the obsolete riblets and the fine, close, wavy spiral striations, which also 
cover the entire surface of the spire. Aperture oval; posterior angle acute; 
outer lip thin; columella slender, oblique, slightly curved and revolute, 
with a slight fold at its insertion; parietal wall covered by a thin callus. 
Length, 11.5; diameter, 3.7 mm. (Dali and Bartsch.) 
Type in United States National Museum, No. 160208. Type locality, 
Lituya Bay, Alaska. 
Range. Known only from type locality. 
Turbonilla oregonensis Dali and Bartsch, 1907 
Plate 50, fig. 5; Plate 54, fig. 2 
Proceedings of the United States National Museum, 33:503; PI. 45, fig. 2. 
Shell elongate-conic, wax-yellow, with two yellowish-brown spiral 
bands, the posterior one of which encircles the turns a little above the 
periphery, while the anterior one, which is a little wider, is immediately 
posterior to it, the two being separated by a space about as wide as the pos¬ 
terior band. Nuclear whorls decollated in all our specimens. Post-nuclear 
turns very slightly rounded, moderately contracted at the periphery and 
closely appressed to the preceding turn at the summit. There are no 
well-defined ribs, the axial sculpture being reduced to mere lines of 
growth with here and there a weakly impressed area, probably repre¬ 
senting an obsolete intercostal space. Sutures strongly impressed. Per¬ 
iphery of the last whorl faintly angulated. Base short, well-rounded. 
Entire surface marked by fine, regular, close, spiral striation. Aperture 
pyriform, posterior angle acute; outer lip thin, columella somewhat 
twisted, scarcely revolute at its free end. The type has eight and one- 
half whorls remaining, which measure: Length, 8.5; diameter, 2.7 mm. 
(Dali and Bartsch.) 
Type in United States National Museum, No. 181112. Type locality, 
United States Fish Commission Steamer “Albatross” Station 2885, off 
Oregon coast, in 30 fathoms. 
Range. Off the coast of Washington and Oregon. 
Turbonilla gloriosa Bartsch, 1912 
Proceedings of the United States National Museum, 42:268; PI. 35, fig. 9. 
Shell very slender, elongate-conic, wax-yellow, with a broad, brown 
band, which on the early and the later whorls extends over the anterior 
half, between the sutures, while on the middle ones it covers fully two- 
thirds of that space. Nuclear whorls decollated. Post-nuclear whorls 
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