324 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



fine, but rather conspicuous, lines of growtli cover tbe surface, and re- 

 cede strongly on the subsutural band. 



Aperture small, ovate, rather narrow. Outer lip with a prominent, 

 convex edge, which has a deep notch, situated a short distance below 

 the suture. The notch is usually constricted or even nearly closed up 

 at the edge of the lip, but is broadly rounded at its inner end ; this 

 gives it a button hole like appearance. In some specimens it is but 

 little constricted. Canal short, broad, slightly everted. 



Color, brown of various tints ; often brown, with one or two spiral 

 bands of yellowish brown, and with streaks of light brown -, or the ribs 

 may be pale yellowish brown ; aperture brown within ; columella whitish 

 in front. Oi^erculum, and animal, not observed. 



Length of the largest specimen, 19.5™™ ; greatest diameter, 6™™ ; length 

 of body-whorl and canal, 10™"'; of aperture, 6™™; breadth of aperture, 

 2,5™™. 



Off Martha's Vineyard, stations 1035, 103G, 1038, 1039, in 94 to IIG 

 fathoms, 1881. Off Delaware Bay, station lOlG, 101 fathoms, dredged 

 by Lieut. Z. L. Tanner, Oct. 10, 1881. 



Pleurotoma comatotropis Dall. 



Pleurotoma (Mangilia) comatotropis Dall, Bulletin Mus. Comp. Zoijl., ix, p. 7:S, 

 1881. 

 Differs from all our other species in having strong spiral ribs and 

 grooves on the lower whorls. 



One dead specimen. Off Martha's Vineyard, station 910, in 100 

 fathoms. Off Cape San Antonio, 640 fathoms (Dall). 



Daphnella limacina Dall. 



Pleurotoma (BcJa) Umacina Dall, Bull. Mus. Comp. Zoul., ix, p. 55, 1831. 

 Pleurotoma (Daphnella) Ihnacina Verrill, Am. Jouru. Sci., xxii, ji. 300, 1881. 

 Daphndla Umacina Dall, op. cit., p. 102 ; Verrill, Trans. Conn. Acad., v, p. 452. 



Station 994, 308 fathoms. Gulf of Mexico, 447-805 fathoms, Blake 

 Exp.,— Dall. 



Bela Gouldii Verrill. 



Trans. Conn. Acad., v, p. 465, pi. .57, figs. 6, 6a, April, 1882. 

 Off Chesapeake Bay, station 898, in 300 fathoms,— Lieut. Z. L. Tanner. 

 Common from Cape Cod to ISova Scotia and the Gulf of St. Lawrence, 

 in 12 to 60 fathoms. 



Bela harpularia (Couth.) H. and A. Ad. 



Fusus harpularius Couthouy, Boston Jour. Nat. Hist., ii, p. 106, pi. 1, fig. 10, 

 1838. 

 Gould, Invertebrata of Mass., ed i, p. 291, fig. 191, 1841. 

 Bela harpularia H. and A. Adams, Genera of Eecent Mollusca, vol. i, p. 92, 

 1858. 

 Gould, Invertebrata of Mass., cd. ii, p. 352, fig. 191 {non G. O. Sars). 

 Verrill, Report Invert. Anim. of Vineyard Sd., in 1st Rep. U. S. FisbCom., 

 pp. 508, 636, pi. 21, fig. 108 (after Gould), 1874 (autb. cop., p. 342) ; Trans. 

 Conn. Acad., v, pi. 43, fig. 14, pi. 57, fig. 9, 1882. 



This species ranges from Long Island Sound to Nova Scotia, but is 



