384 Gould's Descriptions of Shells 
wax yellow, a little dusky below the suture; whorls ten, flat, 
slightly shouldered above, marked by about twenty direct longitu- 
dinal folds, the summits of which are cut by numerous fine revolv- 
ing strize, deeper in the interstices, which also extend over the base 
of the shell, though the folds terminate at the periphery or are 
extended in delicate furrows. Aperture narrow ovate, lip sharp ; 
revolving strize apparent in the aperture. 
Length three tenths of an inch; diameter one twentieth of an 
inch. 
Inhabits Santa Barbara. Col. Jewett. 
In structure and sculpture it may be compared with C. formosa. 
It is, however, less accurately acicular, the posterior whorls de- 
creasing more rapidly than the others. 
CHEMNITZIA TORQUATA (P1. XIV. Fig. 16.) 
olida, turrita, lactea; anfrac. 8 convexiusculis, plicis longitudinalibus, 
ferons perobliquis ad 16 ornatis; anfractu ultimo subangulato, basi inor- 
natà; apertura subovata, labro incrassato. 
Shell minute, türreted, solid, milk-white, composed of eight 
moderately convex whorls, separated by a deep suture, each one 
with about sixteen very oblique, somewhat flexuose folds, quite 
well marked, not quite reaching the suture ; the spaces between do 
not exhibit revolving lines. 'The last whorl is slightly angular at 
periphery, at which point the folds terminate, and the base is quite 
destitute of sculpture. Aperture subovate, lip thick; columella 
somewhat revolute, joining the lip below at nearly a right angle. 
Length one fifth of an inch; breadth one twentieth of an inch. 
Obtained at Santa Barbara. Col. Jewett. 
In form it is much like C. clathrata, but is smaller and has no 
revolving lines, and the folds are much more oblique. 
ODOSTOMIA GRAVIDA (Pl. XIV. Fig. 14.) 
T. ovato-conica, elevata, verte polita; spira acuta ; anfr. 6 supra roia 
tis, ultimo subangulato, tes duos teste adequante; apertura ovata, 37 
ticé rotundata, postice Min: pest expanso ; plicá columellari acuta, transvers 
umbilico parvo suffossa. 
Shell small, ovate conic, elevated, ivory white, polished ; whorls 
six, abruptly rounded above, rather flattened at the middle, the last 
