108 AMERICAN JOURNAL 



Buccinum Kennicotti, n. s. 



Shell of six whorls, which are rather shouldered but not at 

 all carinated. Aperture one-half the length of the shell or a 

 little less. Outer lip strongly arched, forming a right angle 

 with the body whorl, somewhat effuse anteriorly. Columella 

 with a thick white callus, with a groove behind it, somewhat 

 arched and twisted. Siphonal fasciole well marked, rather nar- 

 row. Canal narrow, recurved, rather elongated. Color. of the 

 shell white, with a purple tint within. Sculpture consisting of 

 faint, primary, revolving ridges, obsolete on the convexity, and 

 more evident on the anterior part of the last whorl ; absent on 

 the upper whorls. Secondary sculpture of fine crenulated thread- 

 like lines, about eighty to the inch, which are decussated by the 

 lines of growth. The whorls are crossed by stout, waved, rounded 

 ribs (twelve on the last whorl), which are evanescent on the an- 

 terior portion of the last whorl, roundly shouldered on the last 

 whorl, less so on the upper ones ; their anterior declivity rather 

 sharper than their posterior slope. These ribs are a little wider 

 than the interspaces. Epidermis yellowish brown, thin, smooth, 

 following the sculpture of the surface. 



Lat. 2-5, Ion. 4-5 in. ; Ion. apert 2-4, lat. of do. 1-4 in. ; defl. 

 55°. The suture is very deep, not channelled, and the upper 

 part of the ribs of one whorl fit into the interspaces of the whorl 

 above. 



Habitat, Captain's Harbor, Unalashka. One specimen. I 

 am under the impression that a fine specimen of this shell is in 

 the cabinet of Dr. Newcomb, now belonging to Cornell Uni- 

 versity, and came from the Aleutian Islands. 



This magnificent species, after a careful examination by Dr. 

 Stimpson, was pronounced to be new, and further study has 

 confirmed me in the opinion. There is no species of Buccinum 

 known to me which closely resembles it. The shell most like it 

 is the Chrysodomus Beringi, of Middendorf, which, apart from 

 its generic characters, is immediately distinguishable by its 

 smooth surface, irregular ribbing, straight canal and columella, 

 and subtriangular aperture. The present species is one of the 

 largest and finest species of the entire genus. 



Chrysodomus liratus, Mart. 



Buccinum liratum, Martyn, Un. Conch. 43, pi. 13 and 14, f. 



1, 1784, teste Cpr. 

 Murex lyratus, Gmel., Syst. Nat. 3531, No. 175. 

 Chrysodomus Middendorfii, Cooper, Pac. R. R. Rep., xii, pt. 



ii, p. 370. 

 Tritonium decemcostatmn, Middendorf. 



