248 LEPTOTHYRA. 



upon the base are but little, if at all, narrower than the upper ones ; 

 whilst in L. sangidneus and L.sangarensis the difference in width is 

 decided and constant. I have seen specimens of L. carpenter i 

 strongly lirate both above and below. As to color, " the species is 

 of all shades of crimson and purple, some specimens being banded 

 with white, or having the red color of the ribs interrupted by ob- 

 lique streaks of white; some specimens, excepting the dark apex, 

 being pure white." ( />'///. ) 



I did not adopt the varietal name pui'jtirreii*, proposed by Car- 

 penter, because it has already been twice used in this genus. 



L. pAucieosTATA Ball, 1871. PI. 63, fig. 27. 



Shell small, depressed-globose, solid, imperforate; whorls 4, rap- 

 idly increasing, very strongly spirally lirate, the line seven to eight 

 in number on the last whorl, separated by deep grooves, in which 

 incremental stria? arc evident; sutures canaliculate; aperture con- 

 tracted, pearly white within ; columella ending in a callous tubercle; 

 color rusty brown or rose-red, frequently with alternating white 

 spots on the ribs, interstices generally lighter, sometimes pure white. 



Alt. 4, diam. 4 mill. 



Monterey, Catalina Li. <uid S<ai Diec/o, (.\<L 



Most nearly allied to the preceding, but differing sufficiently in 

 the extremely coarse prominent ribs. 



L. BACi'LA Carpenter, 1865. PL 39t/, fig. :):>. 



Shell small, depressed-globose, solid, imperforate, rufous ashy ; 

 whorls 4, slightly convex, rapidly increasing, obsoletely but regu- 

 larly spirally striate; aperture large, oblique, derlexed abov?. 



Alt. 4, diam. 5 mill. 



Collonia pa/ticicostata Sowb. (not Dall) is a synonym. 



Allied to L. cdrpenteri, but readily separated by the nearly obso- 

 lete spiral sculpture. 

 L. MAIKJINATA ("Xiittall") Reeve, 1848. PI. 58, figs. 51, 52. 



"Shell ovate, rather solid, im perforated, spirally striated, slightly 

 grooved; aperture small ; whitish stained and blotched with livid 

 olive." (Reeve.) 



J r />j>er California. 



1 have copied Reeve's description and the figures of Reeve and of 

 Sowerby the latter said to be twice the natural size. If this shell 

 ever came from California,' which is very improbable, it might be a 

 form of L. Imenla Cpr. It is not the T. tiKii/htatiii* Nuttall mss., 

 which is a species of Trochichc. 



