NO. 1264. ILL USTRA TIONS OF A MERICAN SHELLS— DA LL. 525 
TRITONOFUSUS HALLII Ball. 
Plate XXXVI, fig. 9. 
Sipho hallii Dall, Proc. Cal. Acad. Sci., V, April, 1873, p. 68, pi. ii, fig. 3. 
Sanborn Harbor, Nagai, Shumagin Islands, Alaska, W, G. Hall. 
U.S. KM., 108981. 
This shell is of a white color, cov^ered by a polished, closei}^ adherent 
yellow brown periostracum. It is of a very solid build, with obsolete 
spiral sculpture visible in a good light. 
TRITONOFUSUS (PLICIFUSUS) BRUNNEUS Dall. 
Plate XXXIV, fig. 1. 
Chrysodomus brunneus Dall, Proc. Cal. Acad. Sci., VII, March, 1877, p. 6; Sci. 
Expl. Alaska, Bucdnidas, 1879, pi. ii, fig. 4. 
North end of Nunivak Island, Bering Sea, near Cape Etolin, in 10 
fathoms; Dall. U.S.N.M., 108984. 
This species is of a rosy brown, with a dull surface and sharp 
sculpture. 
TRITONOFUSUS (PLICIFUSUS) VIRENS Dall. 
Plate XXXVI, fig. 8. 
Chrysodomus virens DaIjI,, Proc. Cal. Acad. Sci., VII, Mar., 1877, p. 6; Sci. Expl. 
Alaska, Buccinidas, 1879, pi. ii, fig. 3. 
Kyska Harbor, Aleutian Islands, in 10 fathoms; Dall. U.S.N.M., 
108982. 
The shell is of a brownish color, covered, when fresh, b}^ a polished 
grass green periostracum, which in the cabinet gradually fades. Its 
nearest relative is Chrysodointis fuHcolkjatus E. A. Smith, from Japan. 
TRITONOFUSUS (PLICIFUSUS) RECTIROSTRIS Carpenter. 
Plate XXXIV, fig. 2. 
Chrysodomus rectirosiris Carpenter, Proc. Acad. Nat. Sci. Phila. for 1865, 
p. 64. — Dall, Sci. Expl. Alaska, Biiccinida;, 1879, pi. ii, fig. 1. 
Puget Sound and the waters around Vancouver Island in 68 fathoms, 
Kennerley and Richardson. U.S.N.M., 4815. 
The shell is white, with a polished olive brown periostracum and a 
tinge of reddish brown within the aperture. It is frequentl}'^ eroded, 
especially near the apex, and the long slender canal is frequently 
distorted by fracture and repair. 
