46 SHELLS OF NEW ENGLAND. 
ful, (W. 8.) Salem Harb., 1. w. to 15 f. (Tufts.) 
Off Chatham, Cape Cod, 16 miles from land, abun- 
dant, (Atw.) Nantucket, (Park.) 
B. pricosum, Menke. Gould, 303, f. 213. Fusus cine- 
reus, Say. — Litt. From Casco Bay southward. It 
is not improbable that the establishment of a new 
genus is requisite for this shell. 
TRITONIUM VENTRICOSUM, St. Fusus ventricosus, Gray. 
Gould, 285, f. 200.— Corall. St. George’s Banks. 
Nantucket Shoals, ( Ag.) 
It would seem that the name Tritonium could be 
most conveniently retained for Fusus. The names 
Tritonium and 'Triton are sufficiently distinct. 
T. Isuanpicum, Lovén. Murex £, Chemn. Fusus I, 
Gould, 284.— Lamin. Corall. From Nantucket 
Shoals northward. Eastport at low water, (Ray.) 
Off Cape Cod, in 30 f. (Atw.) Off Lynn, in 20 f. 
(Tufts and Haskell.) 
T. pyemzum, St. FE. Islandicus, var. pygmeus, Gould. 
F. pygmaeus, Migh.— Corall. Whole Coast. Kast- 
port and Grand Manan, in 6-50 faths. mud, (W. 
S.) Isles of Shoals, in 20 f. sand, (Wh.) Off Na- 
hant, in 17 f. (Tufts and Hask.) 
This species differs much from the young of 7. 
Islandicum, as is seen by comparing specimens of 
each, of equal size. The animal also differs remark- 
ably, in having its siphonal tube protruding far be- 
yond the extremity of the canal of the shell, thus 
showing a resemblance to Nassa. 
T. pecemcostatum, Middendorff. Fusus decemcostatus, 
