354 LAMINELLA, MOLOKAI. 



Spire turrited, the apex subacute, suture well impressed, with 

 a thread-like margin. Whorls Qy 2 , the first flattened, the 

 rest convex, last whorl inflated, nearly half the total length. 

 Aperture slightly oblique, ovate, whitish; columellar fold tri- 

 plicate, the lower fold stronger, twisted, lamelliform, upper 

 fold less prominent; columella roseate or white; peris tome 

 simple, unexpanded, rather thin. Length 18, diam. 9 mm. 

 (Borcherding) . 



Molokai : Manawai, on the southern slope. 



Laminella semivenulata BORCHERDING, Zoologica, xix, Heft 

 48, p. 92, pi. 8, f. 24, and var. f. 23 (1906). 



Borcherding 's type figure is copied, pi. 50, fig. 6. Also his 

 figure of a " transition-form to L. citrina," from the same 

 locality, pi. 50, fig. 7. Some figures are added of specimens 

 in coll. C. M. Cooke (figs. 9, 10, 11). 



On the third whorl there are often some oblique stripes, 

 reminiscent of an earlier pattern, before the stippled stage 

 sets in (pi. 56, fig. 7) ; rarely a modification of this pattern 

 continues, as in pi. 50, fig. 9, but usually it gives place to a 

 fine stippling, or scattered fly-specks, with a blotched band 

 on the base, the ground-color being yellow. The striped stage 

 is often omitted. Length 15 to 18 mm. 



Similar coloration is seen in the neanic stage of some indi- 

 vi'duals of helvina and citrina, as noted above. 



