320 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



This species was first dredged by us, in 1877, on the United States 

 Fisli Commission steamer S])eedwell, off Cape Sable, Nova Scotia, in 

 88 to 91 fathoms, fine compact sand, where it occurred in considerable 

 numbers, living- : and off Halifax, 42 fathoms, dead. 



Off' Martha's Vineyard this species is very common in deep water. 

 It occurred at 48 stations in that region in 18S0 and 1881 ; living speci- 

 meus were taken in 8G to 410 fathoms, but it is most abundant between 

 200 and 410 fathoms; at station 098, in 302 fathoms, 154 specimens 

 were taken, 140 of them living. Dead shells, inhabited by Eupaf/uri, 

 occurred in 64 to 85 fathoms, and also in 458 fathoms. It was taken by 

 Lieut. Z. L. Tanner, on the Fish Hawk, in 1880, off Chesapeake Bay, 

 in 56 to 300 fathoms; and oft' Delaware Bay, in 156 and 435 fathoms, in 

 1881. 



This shell is closely allied to S. proplnquus (Alder) of Europe, to 

 which I formerly referred it, with doubt. Our species is, however, a 

 larger, more robust, and more hairy shell, and its nuclear whorls are 

 totally different, for according to the descriptions, S. propinquns always 

 has a regularly sjnral nucleus, with the first whorl minute and not turned 

 up; this is, also, the case with an authentic specimen, in my possession, 

 received from the Rev. A. M. Norman. 



Sipho Stimjjsoiii, var. Uraiulns Verrill. 



NeptuHta {Sipho) arata Verrill, Proc. Nat. Mus. , iii, p. 370, 18S0. 

 Specimens intermediate between this variety and the ordinary, nearly 

 smooth, shallow-water form have been obtained. The name, aratus, 

 having been used in this group, I propose to name the strongly spirally 

 sculptured variety, Uratidus. 



Sipliii (jhjplii.s Verrill. 



Triionofdfiiis latericexs Vt'rrill, Aiiier. Jouru. Sci.; xx, p. 391, Nov.. 1^80: Vonill, 



Proc. U. S. Nat. Mns., iii, p. 369,1880 {non Moll., Miirch). 

 SijjJio (jhjptus Verrill, Trans. Coun. Acad., v, p. 505, pi. 57, fig. 22, pi. 58, lig.s. 

 1, 1«, June, 1882. 



Shell long-fusiform, with a high, tapering, acute spire; with an im- 

 pressed, oblique, undulated suture; with convex, transversely ribbed and 

 spirally grooved whorls ; and with a narrow, rather long, nearly straight 

 canal. 



Whorls .seven to eight, evenly rounded, crossed by about 13 slightly 

 curved, regular, rounded and prominent ribs, separated by rather wider, 

 regularly concave interspaces; the ribs are lower and a little excurved 

 just below the suture, and fade out before reaching the base of the canal ; 

 sometimes they are mostly obsolete on the body-whorl. The raised spiral 

 cingnli are numerous, regular and close, crossing equally the ribs and 

 interspaces; they are mostly alternately larger and smaller, and are .sep- 

 arated by narrow impressed grooves ; the cinguli are crossed by very 

 fine, close and delicate raised lines of growth, giving them a minutely 

 wavy appearance. Aperture narrow-ellii)tical ; outer lip evenly convex, 



