370 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM, 



conspicuous in the grooves, producing a fine decussated structure. On 

 the last wliorl are fourteen to sixteen of the transverse ribs or folds ; 

 these become obsolete just below the periphery, so that on the base 

 there are only spiral lines and lines of growth. Aperture narrow-ovate. 

 Outer lip evt^nly rounded in the middle, but contracted at the base of 

 the canal- which is short, rather narrow, and distinctly recurved. Col- 

 umella decidedly curved. Epidermis thin, yellowish white, closely ad- 

 herent, with distinct lines of growth. Length, 14.5™^; breadth, 7™"; 

 length of aperture, with canal, 7""'"; its breadth, S™'"; length of body- 

 whorl, front side, 10'"". Stations 891 to 895, 238 to 500 fathoms, with 

 the preceding ; several specimens, living. 



Neptunsa (Sipho) arata Verrill, sp. nov. 



Stations 8G9 to 880, 893 to 895 ; common. Nearly all our deep-water 

 specimens related to N. Stimpsoni Morch {= Fusus Islandicus Gould) 

 differ widely from the common shallow- water form, in having the whole 

 surface much more strongly sulcated by broader, deeper,' and less 

 numerous spiral grooves. On the upper whorls there are seven or eight 

 of these broad grooves, separating flattened spiral ridges of about the 

 same width ; on the last whorls the ridges become broader, and each of 

 them is divided at summit by a smaller secondary groove. The canal is 

 rather long, slightly recurved. Columella twisted, but not much bent. 

 Epidermis not pilose, yellowish brown, often in raised lines along the 

 lines of growth. Color within aperture bluish white, the columella and 

 canal tinged with flesh-color or pale salmon. Length, SO"'"; breadtli, 

 30"""; length of aperture, with canal, 45'"'"; its breadth, 14""^. 



The typical, nearly smooth variety of JV. Stimpnoni Morch is perhaps 

 the same as N. //te&ra Yerkruzen, sp. (= Siplio glaher G. O. Sars). 



Neptunea (Sipho) propinqua (Alder). 



Fusus projiiuquus Alder, Catal. Moll. North. &Durh. ; Jeffreys, British Couch., 



iv, p. 338 ; v, pi. 83, fig. 3. 

 Neptunea propinqua Verrill, Amer. JoTirn. Sci., xvi, p. 210, 1878. 



. This shell was first taken by us, in 1877, off* Cape Sable, and off Hali- 

 fax, Nova Scotia, in 88 to 100 fathoms, where it was common. This 

 season it occurred in abundance, living, and of good size, in most of our 

 outer dredgings, being the most common species of this family, except 

 N. pygmcea. It occurred at all the stations from 8G5 to 874, 87G to 880, 

 893 to 895, ranging in depth from G5 to 487 fathoms. It w^as most 

 abundant at 8G9 to 871, 894 and 895, in 115 to 3G5 fathoms. 



Although it does not agree perfectly with the European specimens of 

 IS! . propinqua that I have had for comparison, I have recorded it under 

 this name, largely in deference to the opinion of Mr. W. H. Dall, who 

 has made a special study of this group, and who has had some of our 

 specimens for comi)arison. 



Tnis shell is somewhat stouter and more veutricose than the ordinary 

 forms of N. ^timpsoni and N. arata, from which it differs, also, in having 



