ACHATINELLA VULPINA. 229 



by several obscure, green transverse lines; suture lightly 

 margined ; whorls 5%, a little convex ; aperture white ; peris- 

 tome thin, lightly thickened within ; columellar fold strong, 

 white. Length 18, diam. 9 mm. 



"Habitat, the Sandwich Islands. Judging from its affini- 

 ties, we may believe that it comes from the island of Oahu' 

 (Achatinella diluta SMITH, P. Z. S. 1873, p. 74, pi. 9, f. 14. 

 THWING, Reprint etc., p. 60, "Kalihi"). 



The photographic copy of Mr. Smith 's figure, pi. 40, fig. 16, 

 is a little too dark green. I have not seen the type of diluta 

 in the British Museum, but a specimen agreeing very closely 

 with the figure, in Gulick's collection, no. 905, appears to be a 

 dextral form of olivacea. The shape and color, with indistinct 

 green bands, may be matched in sinistral shells. In the west- 

 ern part of its range vulpina of several patterns has been 

 found dextral, and it seems likely that the two specimens of 

 diluta known are merely rare dextral variants of the common 

 olivacea. Mr. Gulick has marked his specimen as from 

 "Halawa?", and I imagine that locality is not far wrong. 



A. ernestina Baldwin. (PL 39, fig. 4, cotype). 'Shell 

 sinistral, subperf orate, moderately solid, ovately conical ; apex 

 subacute ; surface shining, obliquely striated with delicate 

 growth lines, under a strong lens exhibiting numerous, very 

 close, and minute decussating striae; apical whorls smooth, 

 scarcely decussated. Color yellow, lighter above ; variously 

 striped with transverse, dark chestnut bands, the more con- 

 stant being one bordering the suture, one at the periphery, 

 spiral above, and one encircling the base. Whorls 6, narrowly 

 margined above, somewhat convex ; suture moderately im- 

 pressed. Aperture oblique, oval, faintly exhibiting the dark 

 bands of the exterior; peristome acute, somewhat thickened 

 within, slightly expanded, white, the coloring of the exterior 

 bands appearing on the inner edge ; columella white, termina- 

 ting in a prominent, oblique, tortuous fold. Length 21, diam. 

 12 mm. 



* * Habitat, Nuuanu Valley, Island of Oahu. 



' * The animal, when extended in motion, as long as the shell. 

 Mantle light brown, sprinkled with black and margined on the 

 outer edge with an interrupted reddish-yellow line. Superior 

 portion of foot light brown, thickly studded with small slate 

 spots; under portion of foot light brown with a slate tinge. 

 Tentacles dark slate." (Baldwin}. 



