240 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
and middle) folds are separated by a broad deep sinus. Periostraca thin, 
smooth, not ciliated. Length, 2.23; breadth, 1.2 in. (Stimpson.) 
Type in? Type locality not known to writer. 
Range. Point Barrow, Arctic Ocean, south to Puget Sound; circum- 
boreal. 
/ 
Buccinum eugrammatum Dali, 1907 
Plate 14, fig. 1 
Miscellaneous Collections, Smithsonian Institution, 50:153. 
Shell acute conic, thin, of a subtranslucent brownish consistency (like 
B. castanemn Dali), with about seven turreted whorls; nucleus smooth, 
of two whorls; suture distinct, with wide channel in front of it, due to 
the first spiral rib; axial sculpture of faint incremental lines; surface 
with an extremely thin, smooth, dehiscent periostracum; spiral sculpture 
between the sutures of five or six strong, squarish, prominent, spiral 
ribs, with slightly narrower channeled interspaces, of which there may be 
from seven to ten on the last whorl; the posterior rib in many cases is 
nodulous or beaded, corresponding to little waves which at intervals may 
cross the sutural channel but do not seem ever to extend beyond the second 
rib; aperture semilunar, throat and body yellow, pillar and outer lip 
white; outer lip thickened, expanded, somewhat reflected, undulated by 
the ends of the ribs; a glaze of callus on the body; pillar straight, not 
pervious; canal wide, deep, recurved, forming a strong fasciole; oper¬ 
culum small, rounded-triangular, the nucleus near the narrower end. 
Long, of type specimen, 54; of last whorl, 40; of aperture, 28; max. 
diam., 31 mm. (Dali.) 
Type in United States National Museum, No. 110539. Type locality, 
Station 4777, Petrel Bank, Bering Sea. 
Range. Petrel Bank, Bering Sea, in 42-54 fathoms. 
Buccinum tenue Gray, 1839 
Beechey’s Voyage to the Pacific, etc., Zoology, 128; PI. 36. fig. 19. 
Shell ovate, conical, thin, pellucid, pale brown, very finely and closely 
spirally striated, and closely longitudinally plaited, the plaits arched regu¬ 
lar. The spire acute; the whorls rounded. The outer coat of this shell 
is very thin and powdery, and appears to separate very easily, for in most 
specimens there are large spaces in which it has entirely disappeared, 
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