336 LAMINELLA, LANAI. 



Borcherding has added remyi to the Molokai fauna by an 

 incorrect identification of specimens of venusta or depicts 

 The Lanaian species is not closely related to any Molokai ' 

 form. 



The shell is very pale 'buff, with some pink suffusion on 

 the last whorl and the embryonic whorls. The first half- 

 whorl is smooth, convex and uniform pinkish-brown; next ; 

 whorl streaked, flattened and unevenly, rather weakly cos- 

 tate ; on part of the third whorl the costation or corrugation 

 is stronger, more or less irregular, after that weakening. 

 The last whorl is very finely striatulate. There are reddish 

 streaks between the ribs on the embryonic whorls; near the 

 end of the third whorl these give place to a few widely-spaced 

 oblique blackish stripes; after which the angular, zigzag or 

 netted pattern begins. This pattern is essentially like that 

 of L. tetrao. The interior of the aperture and the columella 

 are pink ; columellar lamella simple, steeply ascending. Per- 

 foration minute, or even closed. Length 14, diam. 7.25, 

 aperture 6.3 mm. ; fully 6 whorls. 



6. L. CONCINNA (Newcomb). PI. 54, figs. 10, 11. 



" Shell dextrorsal, umbilicated, longitudinally very finely 

 striated rather shining; whorls 6, convex; suture impressed; 

 aperture ovate ; columella short, straight, the margin reflexed, 

 furnished anteriorly with a spiral plait; outer lip simple, 

 acute; color pale yellow, the uppermost whorls rosy (New- 

 comb ) . 



Lanai (Newcomb); Koela side of highest point; side op- 

 posite Koela, and near Koela at 3,000 ft. (Perkins). 



Achatinella concinna NEWC., P. Z. S., 1853, p. 157, pi. 24, 

 fig. 79. PFR., Monogr., iv, 536. THWING, Occ. Pap. B. P. B. 

 Mus., iii, p. 131, pi. 3, f. 2. Amastra (Laminella) concinna 

 Newc., SYKES, Fauna Hawaiiensis, p. 348. 



This small yellow or olivaceous-yellow shell is very distinct 

 from all other species. It may be either dextral or sinistral 

 in the same colony. 



The embryonic whorls are smooth and convex, the rest 

 strongly convex and weakly striatulate. Last two whorls 



