94 



1402 Boreotrophon tenuisculptus Cpr. 1866. 

 Synonymy: — Trophon subserratus Sby. 



Aleutian Islands to Estero bay, near San Luis Obispo, Cal. 

 Originally described from the Pleistocene of Santa Barbara, Cal. 



1403 Boreotrophon scitulus Dall. 1891. 



Dredged off Unalaska, in Bering Sea, in 225-309 fms. Proba- 

 bly extends to San Pedro channel, Cal. 



1404 Boreoptrophon Kamchatkanus Dall. 



Shell small, solid, yellowish white, with about 5 whorls; nu- 

 cleus lost; subsequent whorls with (on the fifth 21) low, rude, 

 rib-like varices, crossed by 4 or 5 obscure revolving cords, of 

 which 2 are visible behind the sutures; in front of the suture is a 

 sloping space somewhat constricted, at the shoulder is a cord, fol- 

 lowed by others with wider interspaces and toward the canal more 

 flexible; the incremental lines are also conspicuous; canal twisted, 

 recurved, rather short and wide, aperture white, body and pillar 

 callous, the latter twisted and obliquely truncate in front, form- 

 ing a nearly pervious axis; Ion. of shell 25; of aperture and canal 

 15; max. diam. 12 mm. 



Type locality: — Southeast coast of Kamchatka, in 96 fms. 



1405 Boreotrophon orpheus Gould. 



Synonymy: — Fusus orpheus Gld. 1849. — Trophon fabricii Cpr. 

 1863 (non Beck, 1842). — Trophon stuarti of various authors, not 

 Smith. 



Vancouver Island to Cape Mendocino. 



1406 Boreotrophon stuarti E. A. Smith. 1880. 



Synonymy: — Trophon orpheus of various authors, not Gould. 



Shumagin Islands, Alaska, to Santa Cruz, Cal., in 16-202 fms., 

 living in shallower water at the north, and following the temper- 

 ature into deeper water at the south. 



Shell with 7-12 varices with the interspaces crossed by 4 or 5 

 rounded spiral cords, and reaches a length of 52 mm. The varices 

 may be wide and thin with prominent spines at the shoulder, or 

 low and hardly stronger than the spirals and spineless, a form 

 which has a very different aspect from the type, the cancellation 

 being very conspicuous. 



1407 Boreotrophon (Stuarti var.?)smithi Dall. 



This form is known to range from Fuca Strait to Santa Bar- 

 bara, Cal., in 39-74 fms. It much resembles B. Stuarti in general, 

 but differs by more slender whorls, with a more constricted suture, 

 relatively wider varices, and the absence of any spiral sculpture. 

 It has 6-8 varices, very thin, wide and sharp with high, strongly 

 recurved spines at the shoulder. It reaches a length of 47 and a 

 width of 23 mm. with 6 whorls exclusive of the nucleus. Canal 

 strongly recurved and imbricating remnants of old canal ends are 

 noticeable on the siphonal fasciole. Color whitish, with a pale 

 brown or yellowish periostracum. 



1408 Boreoptrophon peregrinus Dall. 



Shell small, yellowish white, with 8 whorls; nucleus rounded, 

 smooth, tilted, with 1% whorls; subsequent whorls with 7 or 8 

 procumbent broad varices, strongly angulated at the shoulder, 

 where the varices form compressed elevated spines; behind the 

 angle the whorl is somewhat excavated; base of whorl constricted 

 with a short recurved, imbricate canal; aperture squarish, white 



