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PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 3G0 



with Mix revolvini; (jaiiiire, besides one or two on the canal; one is just 

 below the suture; tlio three hirgest surround the periphery, the median 

 one most prominent. Between the subsutural and second carina} the 

 surface is concave and crossed by numerous elevated, thin, curved rib- 

 lets, corresponding to the labial sinus ; similar but less i>rominent ami 

 less curved riblets cross the interspaces between the other carina?, but 

 do not cross the carin.i} themselves. Penultimate whorl with the sub- 

 sutural and two peripheral carin;e. Preceding whorls without distinct 

 carina?, except the subsutural one, but with the curved, transverse, raised 

 riblets well develoi)ed. Xuclear whorls very small (surface eroded). 

 A])erture narrow, angular ; canal short, slightly turned to the left ; outer 

 lip with a distinct, evenly rounded sinus below the subsutural carina, 

 ('olumella slightly incurved and flattened. Length, 2.20"""; breadth, 

 .00'"'"; length of body- whorl, 1.40"™; of aperture, .95""". 

 Station 892, in 487 fathoms ; one specimen. 



Marginella roscida (?) Ravenol. 



A single dead specimen, closely resembling this species, was taken at 

 station 805, in 05 fathoms. 



Tritonofusus latericeus (INIoll.) MJ'n-cb. 



Si2)lio latericeus G. 0. Sars, Moll. Reg. Arct. Norv., p. 27G, pi. 15, fig. 8; pi. x, 

 fig. 24 (dentition). 



Several specimens, apparently of this species, were taken at stations 

 804 and 895, in 238 to 305 fathoms, off Newport. It had previously been 

 dredged in the Gulf of Saint Lawrence by Dr. J. W. Dawson. 



Our shell is long-fusiform, with an elevated, acute spire; whorls 

 eight, moderately convex, crossed by strong, prominent, rounded ribs 

 (about eighteen on the last whorl), separated by concave interstices, 

 wider than the ribs ; whole surface covered with fine and regular spiral 

 grooves, defining raised spiral lines of about double their width ; these 

 lines cross the ribs as well as their interspaces. Nuclear whorl sintdl, 

 a little eccentric and incurved. Aperture long-ovate, narrow. Canal 

 somewhat elongated, nearly straight, narrow; the outer lip is con- 

 tracted or incurved at its base. Length, 20'""'; breadth, 8'""'; length of 

 aperture, 10"""; its breadth, 3'"'". 



Neptunea (Gipho) cselata Vorrill, sp. nov. 



Shell resembling the last, small, subfusiform, with an elevated spire, 

 which is less acute than in the preceding, while the aperture is shorter 

 and the canal is shorter and more recurved than in that species. Whorls 

 six, moderately convex, with impressed sutures, the upper whorls de- 

 creasing more rai)idly. Nuclear whorls very small, regular, smooth, not 

 distinctly incurved. Sculpture broad, rather prominent, rounded ribs, 

 with wider concave interspaces, and over the whole surface numerous 

 small, narrow, unecpial, i-aised si)iral lines, separated by wider grooves. 

 The whole surface is also covered with very fine and ifgular raised lines 

 of growth, which cross and roughen the spiral raised lines, and are more 

 Proc. Nat. Mus. 80 24 ©ec. 21, I ^>NO. 



