LAMINELLA, -LANAI. 335 



appearing on the first whorl. Dark streaks begin with the 

 second half-whorl in two, with the third fourth in another 

 shell. The streaks are faint at first, dark and close on the 

 second whorl; on the first and second whorls they are not in 

 the least zigzag, but run with growth-lines. Angular figures 

 appear on the third whorl. The earlier streaks are lost by 

 wear in adult shells. Embryos of three whorls (pi. 56, fig. 

 2) have a small columellar lamella. At the two-whorled stage 

 there is merely a sinuosity of the columella. Axis perforate. 



4a. L. tetrao gracilior n. var. PI. 54, fig. 8. 



Among specimens in the Swift collection (A. N. S. P.), 

 there is one extremely slender shell which approaches L. remyi 

 in contour, but the early whorls are smoother, as in tetrao. 

 Whether this is a local race or only an individual mutation 

 we cannot tell. Length 15.5, diam. 8, aperture 6.1 mm. ; 6% 

 whorls. 



5. L. REMYI (Newcomb). PI. 54, fig. 9. 



Shell acuminately elongate, striae numerous, well-defined, 

 obliquely longitudinal ; whorls 7, rounded, minutely margined 

 above or plain ; suture rather deep ; aperture subovate ; colu- 

 mella slightly callous, with a terminal lamellar plait; color 

 salmon, painted with numerous zigzag black lines continuous 

 from the summit to the base of the shell ; lip margined within 

 with reddish-purple. Length fourteen-twentieths, diam. six- 

 twentieths inch (Newc.). 



Lanai (Newcomb). Type in Newcomb coll., Cornell Uni- 

 versity Mus. ; mountains behind Koela (Thwing). 



Achatinella remyi NEWC., Ann. Lye. Nat. Hist, of N. Y., 

 vi, October, 1855, p. 146 ; Amer. Journ. of Conch., ii, p. 215, 

 pi. 13, f. 13. PFR., P. Z. S., 1855, p. 207; Monogr., vi, 178. 

 THWING, Occ. Pap. Bishop Mus., iii, no. 1, p. 130. 



A very rare species, here figured from a specimen received 

 from Newcomb. It is closely related to L. tetrao, but differs 

 by the much more slender contour and especially by the more 

 rugose third and fourth whorls. The aperture and last 

 whorl are longer than in L. tetrao gracilior. 



