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FASCIOLARIIDAE 243
Subfa?nily FUSININAE
Genus Fiisinus Rafinesque 1815
Fusinus thnessus Dall Turnip Spindle
Gulf of Mexico.
Plate I ig
About 3 inches in length, solid, pure white, with a thin, gray periostra-
cum. Aperture round with a flaring, raised parietal wall which, like the
inside of the outer lip, is enamel-white and bears numerous spiral threads.
Each whorl with i o to 12 low, short axial ribs at the periphery. Upper whorls
with 8 to 9 small, but sharp and slightly wavy, smooth spiral cords. Last
whorl and the long siphonal canal with a total of about 30 to 40 small cords
between which is often a very fine one. Dredged uncommonly from 20 to 50
fathoms.
Fusinus eucos7nius Dall Ornamented Spindle
Gulf of Mexico.
Plate lie; figure 22k
3 inches in length, with about 12 rounded whorls and with a small,
roundish aperture located at the middle of the shell. Siphonal canal long,
its diameter about equal to that of the aperture. Whorls with 8 large, rounded
axial ribs which in the upper whorls are crossed by about 6 strong, sharp,
slightly wavy spiral threads. Apex often leaning to one side. Color all white
with a rather heavy, grayish-white to yellowish periostracum. Rather commonly
dredged offshore, but still a collector's item.
Subgenus Barbarofusus Grabau and Shimer 1909
Fusinus harfordi Stearns Harford's Spindle
Mendocino County, California.
Figure 54a
2 inches in length, heavy, exterior dark, orange-brown, with 11 to 12
wide, rounded axial ribs crossed by small, sharply raised, finely scaled spiral
cords. Rare in moderately deep water.
Fusinus kobelti Dall Kobelt's Spindle
Monterey to Catalina Island, California.
Figure 54b
2 V2 inches in length, heavy, similar to harfordi, but with a longer siphonal
canal, fewer and larger axial ribs (8 to 10 per whorl), colored white, except
for several orange-brown spiral cords. Periostracum rather thick, opaque
and light-brown. The spiral cords in harfordi are much larger and with
squarish tops. Moderately common in shallow water to 3 5 fathoms.