LAMINELLA, MOLOKAI. 349 



~below the light intervals, the surface being more or less, and 

 very irregularly, <jorrugated. Typically the stripes continue 

 upon the last whorl. The aperture is white (rarely pink), 

 rather oblique. Columella straight, abruptly dilated and re- 

 flexed above, bearing a small lamella. There are often one 

 or two accessory callous folds above the lamella. 



Length 15. diam. 7.3, aperture 6 mm, ; 6y 2 whorls. 



Length 13.5, diam. 6.2 mm. 



Length 13.5, diam. 7 mm. 



The animal of L. venusta is ' * slender, body flesh-color with 

 black puncta down the sides ; tentacles very black. When ex- 

 tended, two-thirds as long as the shell " (Newcomb). 



13a. Color-var. semivestita H. & P., n. var. PI. 51, figs. 6-10, 

 12. 



Shell striped on the spire, the last whorl uniform yellow 

 in the typical form; but in some specimens the dark stripes 

 are represented only by a few dots, which may be numerous 

 or very rare; others have stripes on the last whorl, but less 

 numerous than in venusta. Columella uniplicate in the type 

 lot, but biplicate in some others. Length 13, diam. 7 mm. 



Doubtless connected with the typical form, but perhaps 

 worthy of notice as a stage in the decadence of color-pattern. 



13b. Yar. muscaria n. v. PI. 51, figs. 13-16. 



There is also a smaller form, salmon tinted with the apical 

 whorls paler or purple, the aperture and columella deep pink ; 

 marked at and above the periphery with spiral lines of black 

 dots or short dashes, the base usually immaculate. The most 

 fully marked individuals have the stippling arranged ir- 

 regularly in subvertical series also, showing its origin in 

 original subvertical stripes, and these are a little sunken, 

 like the stripes of L. venusta. In one shell (fig. 14) there is 

 a band of black blotches on the base. The least marked 

 shells are merely minutely fly-specked, the dots either scat- 

 tered or forming a subsutural series, in which case they are 

 sunken. Above the small columellar lamella there is a more 

 oblique callous fold, generally small and indistinct. 



Length 13.8, diam. 7.5, aperture 6 mm.; 5% whorls. 



