GASTEROPODA. 41 
This species differs from C. interrupla in being 
more slender, in wanting revolving lines, and also 
totally in its station, — the deeper parts of the Coral- 
line zone. It was taken in forty fathoms, on a mud- 
dy and gravelly bottom, off Grand Manan, a large 
island lying off Eastport, Maine, at the mouth of the 
Bay of Fundy. 
C. interRRupPTA, St., Bost. Proc., iv. 16. Turritella in- 
terrupta, 'Tott. Gould, 268, f.173.— Lamin. Bos- 
ton Harb. 3 f. (W. 8.) New Bedford Harb. (Ad.) 
and southward. 
C. propucta, St. Jaminia producta, Ad. Odostomia 
producta, Gould, 270, f. 175.— Litt. From. Buz- 
zard’s Bay southward. 
C. Fusca, St. Pyramis fusca, Ad. Odost. fusca, 
Gould, 270, f. 176.— Litt. Boston Harb. (W. 8.) 
New Bedford, (Ad.) and southward. Tbe specimen 
from Boston Harbor differs considerably from those 
found at New Bedford, and is perhaps a different 
species. 
C. peaLBaTta, St., Bost. Proc., Oct. 1851. 
It is broader than C. bisuturalis, has not so sharp 
an apex, and wants the revolving line. Dredged in 
Boston Harbor, in 3 f. on a shelly bottom, (W. 8.) 
C. mopesta, St., Bost. Proc., iv. 16. T. parva, conica, 
alba, levis ; anf. 4, planulati, ultimo medio subangu- 
lato; sutura impressa; apertura uniplicata, sub- 
rhomboidea. Long. .14, lat. .06, poll. 
This species is more angular than C. bisuturalis, 
and has no revolving line just below the suture as in 
6 
