180 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
SECTION HARFORDIA Dali, 1920 
Fusinus harfordii Stearns, 1871 
Conchological Memoranda, Part 7, p. 1. Proceedings of the United States National 
Museum, 14; PI. 6, fig. 6, 1891. 
Shell solid, elongate, regularly fusiform; spire elevated, whorls six or 
seven moderately convex, slightly flattened (in outline) above, with a 
groove or channel following the suture; color, chocolate-brown; surface 
marked by numerous narrow revolving costae, which alternate in promi¬ 
nence on the body whorl, and longitudinally by fine incremental striae, 
and on the upper whorls by obtusely rounded ribs of more or less 
prominence; aperture ovate, about one-half the length of the shell, pol¬ 
ished white and finely ribbed within; (the outer lip in perfect specimens 
is probably finely crenulated) ; canal short, nearly straight. Long., 2.1; 
lat., .94 in. (Stearns.) 
Type in United States National Museum. Type locality, coast of 
Mendocino County, near Big Spanish Flat, California. 
Range. Known only from the type locality. 
SECTION ROPERIA Dali, 1898 
Fusinus roperi Dali, 1898 
Plate 28, fig. 3 
Nautilus, 12:4. Proceedings of the United States National Museum, 14; Pi. 6, fig. 6, 
1891. 
Shell small, rather short and wide, with a short subacute spire and 
about six whorls; color ferruginous brown, faintly spirally zoned and 
lighter on the siphonal fasciole, pillar and throat whitish, outer lip between 
the white of the throat and the margin showing narrow spiral brown 
lines on a yellowish ground, whorls with a tendency to a white, narrow 
peripheral line most evident on the summits of the ribs; whorls excavated 
behind, somewhat rounded before the periphery, the margin at the suture 
strongly appressed with the whorl in front of it somewhat constricted; 
suture distinct, hardly undulated, the spiral thread in front of it slightly 
minutely imbricated; axially directed sculpture of finely wrinkled silky 
incremental lines and (on the last whorl) nine rounded ribs with rather 
wider interspaces, the ribs are obsolete near the suture, on the early 
whorls, and on the base; spiral sculpture of numerous flat strap-like 
threads with the interspaces much narrower and sharply reticulated by 
the incremental sculpture which rises in the interspaces nearly to the 
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