_Chemnitzia subcuspidata_, Cpr. State Collection, No. 670, _a_. Ch. t. parvâ, minus tereti, cerinâ seu purpureo-fuscâ; anfr. nud. ii. et dimidio, valde decliviter sitis, marginibus spiræ parum excurvatis superantibus; norm. viii. planatis, suturis excavatis; costis radiantibus circ. xviii. acutis, circa basim prolongatam vix continuis, ad suturas valde elevatis, subcuspidatis; interstitiis latioribus, undulatis; sulcis spiralibus creberrimis, altis, in spirâ circ. x., costas vix secantibus, circa basim impressis; peritremati vix continuo, labio distincto; columellâ vix tortâ. Long. 0·23, long. spir. 0·16, lat. 0·06, div. 25°. _Hab._ S. Diego; 25 dredged in shoal water. _Cooper._ Differs from the figure of _Ch. tenuicula_ (which represents a shell with more numerous ribs than the diagnosis) in its more distant ribs with broader interstices; closer and deeper spiral sculpture; impressed sutures; and especially by the elegant murication of the tops of the ribs, with projecting, curved lines between. This is best seen in the young shells, when the ribs are distinct over the base. Genus EULIMA, Risso. _Eulima (? var.) compacta_, Cpr. Eu. t. “_Eu. micanti_,” jun. simili, sed multo minus tereti; marginibus spiræ parum excurvatis; anfr. nucl. ?.., [detritis], norm. vii.; basi et aperturâ elongatis; labro parum sinuato. Long. 0·25, long. spir. 0·15, lat. 0·09, div. 22°. _Hab._ San Pedro; _Cooper_. A single dead shell was found in Dr. Palmer’s consignment. _Eulima (? var.) rutila_, Cpr. Eu. t. “_Eu. micanti_” jun. simili, sed magis tereti; valde nitente, rosaceo et livido tinctâ; anfr. nucl. ut in “_Eu. micante_;” norm. x. elongatis, gracillimis; basi et aperturâ valde prolongatis; columellâ magis tortâ; labro valde sinuato, supra suturam retrorsum calloso; labio angusto. Long. 0·26, long. spir. 0·19, lat. 0·07, div. 20°. _Hab._ Monterey; _Cooper_. Closely allied to _Leiostraca producta_, Cpr. Maz. Cat. No. 551, but displays no varices. The Eulimidæ are very difficult to distinguish, from a few shells alone. Genus SCALARIA, _Lam._ _Scalaria bellastriata_, Cpr. n. s. State Collection, No. 393, _b_. S. t. curtâ tenuissimâ, albidâ; anfr. vii. valde tumentibus, haud nisi per costas attingentibus; costis circ. xvii. acutis extantibus, reflexis, haud semper in spirâ attingentibus, postice angulatis, parum spinosis; interstitiis circa spiram basimque dense spiraliter lirulatis, lirulis rotundatis, super varicum angulum obsoletis; aperturâ ovatâ, umbilico magno. Long. 0·78, long. spir. 0·55, lat. 0·38; div. 40°. _Hab._ Monterey, a fragment; San Diego, 1; San Pedro, 3; _Cooper_.