11 



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 striae, 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 stria3 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. 



CHEMXITZIA TORQUATA (PI. XIV. Fig. 16.) 



T. solida, turrita, lactea ; anfrac. 8 convexiusculis, plicis longitudinalibus, 

 flexuosis, perobliquis ad IGornatis; anfractu ultimo subangulato, basi inor- 

 nata ; apertura subovata, labro incrassato. 



Shell minute, turreted, 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, eburnea, polita; spira acuta 5 anfr. 6 supra rotunda- 

 tis, ultimo subangulato, trientes duos testae adequante ; apertura ovata, an- 

 tice rotundata, postice acuta ; labro expanse ; plica columellari acuta, transversa, 

 umbilico parvo suffossa. 



Shell small, ovate conic, elevated, ivory white, polished ; whorls 

 six, abruptly rounded above, rather flattened at the middle, the last 



