100 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
moderately rounded, strongly shouldered at the summit, ornamented 
between the sutures by nodulous axial ribs of which about 18 occur 
upon the 2d, 22 upon the 3d, and 26 upon the penultimate turn. In 
addition to the ribs they are marked by four rather strong spiral 
cords the posterior two of which are placed closely together, being 
separated only by a very narrow groove; the next one anterior to 
them occupies the middle of the whorl, and the first is immediately 
above the deep, wide peripheral groove. The groove between the 
peripheral cord and the second one is a little wider than that between 
the second and third. The axial ribs extend only as feeble riblets 
across the groove between the first and second spiral cords and do not 
render the first one tuberculate as they do the three others. Sutures 
deeply channelled. Periphery of the last whorl marked by a deep, 
broad groove, which is %'isible in the sutures of all the whorls. Base 
rather short, well rounded, marked by about five subequally spaced 
spiral grooves which, like the peripheral one, are crossed by many 
slender axial lirations. Aperture irregularly ovate (?), somewhat 
effuse anteriorly, outer lip fractured, columella strong, curved, and 
somewhat revolute, re-enforced by the attenuated base, provided with 
a stout, oblique fold at its insertion. 
The type, cat. no. 159,101 U. S. N. M., was dredged by the U. S. 
bureau of fisheries at station 816, ten fathoms, bottom temperature 
66°, in Narragansett Bay. It has five post-nuclear whorls and meas- 
ures: length, 2.2 mm.; diameter, 1.1 mm. Another specimen, cat. 
no. 159,099 U. S. N. M., comes from Vineyard Sound. 
EvALiNA Dall and Bartsch. 
Evalina Dall and Bartsch, Proc. biol. soc. Washington, vol. 17, p. 12, 1904. 
Axial ribs indicated only near the summit of the whorls, spiral 
markings consisting of many subequally spaced spiral lirations, 
shoulders of the whorls not tabulated. 
Type, Odostomia (Evalina) americana Dall and Bartsch. 
Odostomia (Evalina) winklejri new species. 
PI. 13, fig. 47. 
Shell pupiform, bluish white (nuclear whorls eroded). Post- 
nuclear whorls well rounded, somewhat inflated, slightly shouldered 
