108 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
groove the surface of the ribs and become threadlike on the canal; aperture 
narrow, inner lip erased, canal short. Height of shell, 8; of last whorl, 5; 
diameter, 3 mm. (Dali.) 
Type in United States National Museum, No. 220305. Type locality, 
Port Etches, Alaska. 
Range. Known only from type locality. 
Lora lutkeana Krause, 1885 
Plate 11, fig. 10 
Archiv fiir Naturgeschichte, 51:281; PI. 18, figs. 6, 16. 
Testa ovato-fusiformis, brunnea, anfractibus circiter sex contabulatis, 
supra juxta suturam vix angulatis. Superficies lineis spiralibus numerosis 
et plicis longitudinalibus 18-20 parum prominulis, linea longitudinali quasi 
dimidiatis, in anfractu ultimo caudam attingentibus obducta. Long., 12; 
lat., 6; alt., 5.5 mm. (Krause.) 
Shell ovate-fusiform, brownish, with about six tabulate whorls with 
the spire scarcely angulate next to the suture. Surface with numerous 
spiral lines and 18-20 spiral plications, little prominent divided as it were 
in the middle above a longitudinal line and reaching the line in the last 
whorl. ( Translation.) 
Type in Stuttgart Royal Cabinet. Type locality, St. Lawrence Bay, 
Bering Strait. 
Range. Known only from type locality. 
Described as Bela lutkeana. 
Lora incisula Verrill, 1882 
Catalogue of the Marine Molluscs of New England, 461; PI. 43, fig. 12; PI. 57, fig. 14. 
The shell is small, sub fusiform to short ovate, with about five or six 
turreted flattened whorls, which are angularly shouldered just below the 
suture. The subsutural band arises abruptly from the suture, nearly at 
right angles, and its surface is flat and slightly concave, marked by strongly 
recurved lines of growth but mostly without spiral lines. The shoulder is 
often nearly right-angled. The whorls are decidedly flattened in the mid¬ 
dle. There are on the last whorl, about twenty rather broad, flattened or 
rounded ribs, which are nearly straight, a little prominent and usually 
slightly nodose at the shoulder, but they disappear a short distance below 
it. They are separated by well-excavated, concave grooves, deepest close 
to the shoulder. The most characteristic feature of the sculpture is that 
the surface is marked by rather fine, but regular and distinct, sharply 
incised, narrow revolving grooves, which are rather distant, with flat 
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