PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 395 



been broken off squarely. Length, 12"""; diameter of larger end, 2.5"""; 

 of Ruiall end, .5"™. 



Another specimen of similar character, 10""^' long and 2.5'"'" broad, was 

 dredged in the Gulf of Maine, 107 fathoms (station 9 B), 1873. With 

 the last-named specimen there was, however, a perfect living specimen, 

 7""" long and 2'"'" broad, having the posterior end perfect and provided 

 with the characteristic digitations around the opening. 



Sipliouentalis aflinis (Sars). 



G. O. Sars, op. cit., p. 104, j)l. 20, fig. 1'2. — Yemll, Trans. Couu, Acad., v, j)l. 

 42, figs. 20 a-b. 



A specimen smaller and more slender than the preceding species, 

 and which I refer to ^S*. offinis, was dredged by us, iu 1877, in Bedford 

 Basin, near Halifax, Nova Scotia, 35 fathoms, soft mud. It is 6""" in 

 length, 1"'™ in breadth, slightly curved, round, smooth, glossy, and trans- 

 lucent. The posterior opening is small and appears to be perfect; it 

 shows only a faint indication of a notch on the convex side. 



Siphonentalis Lofotensis (M. Sars). 



G. O. Sars, Moll. Reg. Arct. Norv., p. 104, pi. 20, figs. 11 a, I; pi. i, fig. 3. 



A few specimens that agree well with the figures and description of 

 this species were taken at station 891, in 500 fathoms. 



It is longer and more tapered than the last, and much !*^ss translucent. 



Cadulus propinquu.s G. O. Sars. 



Moll. Reg. Arct. Norv., j). 106, pi. 20, figs. 1.') a, h ; pi. i, fig 5 (deutitiou). 



This shell occurred iu considerable numbers, living, at station 871, in 

 115 fathoms. It is a small, polished species, rather stciter and more 

 swollen than the next. 



Cadulus Jeffreysii Monterosato. 



Cadnlus sul)fiis\formisf Jeffreys, British Couch., v, p. 196, i\ 101, fig. 3 {non 

 Sars, teste Mouter.). 



Several specimens of a small Cadulus, somewhat swollen in the middle 

 and rather strongly bent, I refer to the above species. Che posterior 

 aperture is simple iu most of them, but slightly notched ii others. 



Station 871. 



Cadulus Pandionis Verrill & Smith. 



Auier. Journ. Sci., xx, p. 397, Nov., 1880. 



A very much larger, highly polished species occurred ai many of the 

 stations, but most abundantly at 8G9 to 871 and 873 to 877 iu 85 to 192 

 fathoms. It is swollen on the convex side, in the middle, and slightly 

 angulated or gibbous at about the anterior third. It is transversely 

 elliptical in section ; the anterior end decreases to the aperture, which 

 is oblique, the lip being prolonged on the concave side. Posterior aper- 

 ture small, with a semicircular notch above and below. Length, 10"""; 

 breadth, 2.25'""'; of mouth, 1.75'""'; of i)osterior aperture, .10'"^. 



