uall] new species of shells 161 



and pillar with a thin layer of callus ; canal short, strongly twisted 

 and recurved, with a moderate fasciole ; axis pervious. Lon. of shell, 

 46; of last whorl, 32 ; of aperture, 24; max. lat, 22 mm. 



Station 4982, in 390 fathoms, Sea of Japan, September 19, 1906. 

 U. S. Nat. Mus., 110,490; also at stations 4828 and 4855, in 163 and 

 70 fathoms, respectively, near the coast of Korea. 



The orange-color, conspicuous by the usual erosion of most of the 

 surface, and the short, strongly recurved canal are characteristic 

 features. What appears to be a variety or closely allied species has 

 a deeply orange-tinted shell, with four whorls, strongly recurved, 

 short canal, but with the spirals about twice as wide as in the type, 

 flat above and with distinctly channeled interspaces in which the 

 incremental lines are strong. Lon. of shell, 20; max. lat., 11 mm.; 

 the last whorl 15 and aperture 11 mm. long. 



Station 3279, in 41 fathoms, sand, Bristol Bay, Alaska. U. S. Nat. 

 Mus., 122,664. 



This form might take the varietal name of laticordatus. It is not 

 uncommon in Bering Sea. 



TRITONOFUSUS (PLICIFUSUS) CROCEUS Dall, n. sp. 



Shell slender, acute, reddish yellow under a pale olive periostra- 

 cum, with two swollen nuclear and six subsequent whorls ; axia! 

 sculpture strongest on the spire, where the penultimate whorl shows 

 about 20 rounded, narrow plications with wider interspaces, fading 

 out beyond the periphery and on the last whorl obsolete or absent ; 

 spiral sculpture of fine, rounded, closeset, similar spiral threads, sub- 

 equal over the whole surface except a narrow margin in front of the 

 suture, where they are more or less obsolete ; aperture semilunate, 

 internally brownish, with a salmon-tinted pillar obliquely truncate in 

 front, with a moderately recurved canal, the axis not pervious. Lon. 

 of shell, 39; of last whorl, 25 ; of aperture, 19; maximum diameter of 

 shell, 15; of aperture, 7 mm. 



Station 4982, in 390 fathoms, Sea of Japan, September 19, 1906. 

 U. S. Nat. Mus., 110,491 ; also at station 5038, in 175 fathoms, south 

 coast of Yesso. 



This is a more slender species, with a thinner shell and straighter 

 canal than the preceding, which have no axial riblets. It recalls 

 T. latericeus Sars, in a general way, but is a much larger shell. 



TRITONOFUSUS (PLICIFUSUS) KROYERI Mbller, 1842 



Collected with the preceding. This species is characterized by 

 fine continuous spiral striation, extending over the whole shell except 



