ACADEMY OF NATURAL SCIENCES. 221 



stitiis latioribus, undulatis ; sulcis spiralibus creberrimis, altis, in spira circ. x., 

 costas vix secantibus, circa basim impressis ; peritreraati vix continue-, labio 

 distincto ; columella vix torta. 



Long. 0-23, long. spir. 0-16, lat. 0-06, div. 25°. 



Hab. S. Diego ; 25 dredged in sboal 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 inter- 

 stices ; 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 spiras 

 parum excurvatis ; aufr. nucl. ?.., [detritis] , norm. vii. ; basi et apertura elong- 

 atis ; labro parum siuuato. 



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 tincta ; anfr. nucl. ut in " Eu. micante ,•" norm. x. elongatis, gracillimis ; 

 basi et apertura valde prolongatis ; columella magis torta ; labro valde sin- 

 uate, supra suturam retrorsum calloso ; labio angusto. 



Long. 0-26, long. spir. 0-19, lat. 007, div. 20°. 



Hab. Monterey ; Cooper. 



Closely allied to Leiostraca producta, Cpr. Maz. Cat. No. 551, but displays 

 no varices. The Eulimidse 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. curta teuuissima, albida ; anfr. vii. valde tumentibus, baud nisi per costas 

 attingentibus ; costis circ. xvii. acutis extantibus, reflexis, baud semper in spira 

 attingentibus, postice angulatis, parum spinosis ; interstitiis circa spiram basim- 

 que dense spiraliter lirulatis, lirulis rotundatis, super varicum angulum obso- 

 letis ; apertura ovata, 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. 



So different in sculpture from S. pretiosa and other species with which it 

 agrees in shape, that there will be no difficulty in recognizing perfect speci- 

 mens. 



Scalaria subcoronata, Cpr. n. s. State Collection, No. 393, a. 



S. t. compacta, baud elevata, alba ; anfr. x. rotundatis, parum attingenti- 



