FASCIOLARIIDAE 243 



Subfa?nily FUSININAE 

 Genus Fiisinus Rafinesque 1815 



Fusinus thnessus Dall Turnip Spindle 



Plate I ig 



Gulf of Mexico. 



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 



Plate lie; figure 22k 



Gulf of Mexico. 



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 com- 

 monly dredged offshore, but still a collector's item. 



Subgenus Barbarofusus Grabau and Shimer 1909 

 Fusinus harfordi Stearns Harford's Spindle 



Figure 54a 



Mendocino County, California. 



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 



Figure 54b 



Monterey to Catalina Island, California. 



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. 



