N0.1264. ILLUSTRATIONS OF AMERICAN SHELLS— BALL. 527 
In its l)lunted form, v^cry short canal, punctate spiral .striaj and ob- 
scure axial wrinkles near the suture, this species i^< rather peculiar. 
The shell is white with a brownish substratum and pale gray perios- 
tracum darker in the spiral grooves. The nucleus in all the specimens 
I have seen is defective. 
TRITONOFUSUS (PLICIFUSUS) HERENDEENI Dall, new species. 
Plate XXXVI, fig. 10. 
Bering Sea and the Aleutian Islands in 50 to 100 fathoms; U. S. Fish 
Commission steamer xUhafross. U. S. N. M. , 107006. 
Shell with about nine whorls, a slender spire, small but not planor- 
boid nucleus, and pale olive periostracum. It is pinkish white with a 
yellowish substi'jftum and the periostracum is dull and without polish 
or villosity ; lines of growth distinct, spiral sculpture of fine striae 
with wider flatfish interspaces, alternately coarser on the base; suture 
deep, the whorl below it often obscurely puckered near the suture; 
canal rather short, wide, and recurved. Alt. 70.0, diam. 28.0 mm. 
This elegant species has been obtained at a number of localities. The 
operculum is normal and rather light colored. The individuals vary 
somewhat in relative slenderness. 
VOLUTOPSIUS TROPHONIUS, new species. 
Dredged south of the Pribilof Islands, Bering Sea, by the U. S. 
Fish Commission steamer Albatross^ at station 3602, in 81 fathoms, 
mud, bottom temperature, 37° F. U.S.N. M., 109167. 
Shell with a short spire and robust body whorl; pale reddish-brown 
and white, with five or more whorls; nucleus of nearly two whorls, 
smooth, inflated, blunt above (diam. 6.5 mm,): a subsequent whorl ir- 
regular, finely spirally striate; after which the whorls develop (on the 
fifth about 22) high, thin, sharp, flexuous varices or lamellae extend- 
ing entirely over the whorl, somewhat irregular, and more or less 
spirally finely striated; aperture ovate, canal short, curved, and very 
wide; pillar thin, concave, short, twisted; outer lip expanded, thin; Ion. 
of shell, Q%\ of aperture and canal, 40; max. diam. 37 mm. 
This very remarkable shell is as profusely covered with lamellae as 
the most ornamented Trophon ,and is the first Northern species of the 
Buccinidffi to exhibit this kind of ornamentation. 
The writer was looking in a jar of mixed alcoholic mollusks for a 
specimen of Trophon stuarti Smith, in order to examine the oper- 
culum, and selected this as the largest he had ever seen; but when the 
specimen was freed from a sponge which enveloped it, it was very 
evident that something quite distinct from any Trophm. was in hand. 
The operculum is as usual in the genus, also the verge and other 
organs. 
