﻿PEOCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 371 



an olive-colored, ciliated epidermis ; the canal is shorter and more 

 curv-ed and t\Yisted ; the suture is slightly channeled, and the aperture 

 is broader than in either of these species. The scul^iture consists of 

 regular, narrow, spiral grooves. The aperture is white. 



Bucciuuiu cyaneuni Brug. ; Stimpsou. 



BuccUuim Gronlandicum G. O. Sars, op. cit., j). 259, pi. 25, fig. 1; pi. x, fig. 11 a, 

 b (non Stimpson). 



This species was dredged in the summer of 1870, by the "Speedwell", 

 off Cape Cod, in 90 fathoms. It was dredged by us in 1877, off Cape 

 Sable, Xova Scotia, in 80 to 90 fathoms, compact sand, and off Halifax, 

 in 100 fathoms, and has often been brought in from the banks off Xova 

 Scotia bj' the Gloucester fishermen, but it was not previously actually 

 known from the ]S"ew England coast. 



Nassa nigrolabra Verrill, sp. nov. 



Shell minute, lon^-ovate', nearly smooth, pale olive, with the edges of 

 the lips blackish. Whorls five, slightly rounded, with shallow sutures ; 

 si)ire elevated, not very acute. Surface covered with close, regular, 

 microscopic lines of growth, and with less distinct revolving lines ; canal 

 with a few minute, distinct, s^iiral grooves. Aperture short-ovate ; canal 

 wide and very short; outer lip rounded, with edge flaring, thickened 

 and revolute, with a row of minute nodules on the inside ; inner lip con- 

 sisting of a broad, smooth, glossy, brownish-black dejiosit of enamel on 

 the body-whorl and columella ; columella nearly straight ; no umbilicus. 

 Length, 2.85""'"; breadth, 1.1:0"""; length of aj^erture, 1.20'""^. 



Station 870, in 155 fathoms; one specimen. It is referred to Ifassa- 

 ouly provisionally. The animal is not known. 



Lunatia nana (MiJller). 



G. O. Sars, op. cit., p. 159, pi. 21, figs. 16 a, b; i)l. v, fig. 14 (dentition). — Ver- 

 rill, Proc. Nat. Mus., ii, p. 197, 1879. 



In addition to the localities off" Cape Cod and on Le Have Bank, pre- 

 viously cit^d by me, this species has been taken at other localities on 

 our coast. It was taken by Prof. S. 1. Smith and myself at Eastport, 

 in 1864; by Prof. H. E. AVebster at Seal Cove, Grand Menan, in 1872; 

 by Mr. J. F. Whiteaves in the Gulf of Saint Lawrence ; and by our party 

 in 1880, twenty mUes south of Block Island, in 28 fathoms. 



Lunatia levicula Verrill, sp. nor. 



Shell light, thin, and rather delicate, broad-ovate; spire moderatel}' 

 elevated, subacute. Whorls five, evenly rounded; suture distinct. 

 Aperture ovate, well rounded below. Outer lip short, sinuous along 

 the edge, the upper portion considerably advancing where it joins the 

 body-whorl. Inner lix) partiallj' reflexed over a rather small, deep 

 umbilicus, but not thickened, and forming a mere film on the body- whorl, 

 above the umbilicus. Surface covered with distinct and rather coarse, 

 sinuous lines of growth, parallel with the edge of the lip, and, like it, 

 advancing as they approach the suture. Color (of a dead but fresh 



