256 AMASTEA, MOLOKAI. 



aperture subrounded; lip acute, slightly thickened within; 

 colurnella flattened with a thick plait ; color of shell pale 

 salmon, covered with a densely black epidermis; columella 

 and deep margin of the outer lip within dark-brown ; interior 

 of aperture bluish- white. Length .7, diam. .35 inch" (Newc.). 

 Molokai: Kalai [Kalae], on the ground under low bushes 

 (Newcornb, type loc.) ; Makakupaia (Perkins) ; Kamalo (Bor- 

 cherding) ; all in the central part of the island. 



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

 vi, October, 1855, p. 143 ; P. Z. S., 1855, p. 207 ; Amer. Journ. 

 of Conch., ii, p. 211, pi. 13, f. 4. Amastra humilis Newc., 

 BALDWIN, Catalogue, p. 9. SYKES, Fauna Hawaiiensis, p. 

 337. BORCHERDING, Zoologica, xix, p. 119, pi. 10, f. 21. 



The specimens figured were received from Newcomb. The 

 shell is hardly ' ' obscurely carinated ' ' but only turgid below 

 the suture, or sometimes so swollen there as to appear ob- 

 tusely subangular, an appearance aided by the wear of the 

 cuticle from the convexity. The purple-brown embryonic 

 she'll is very finely but sharply striate, as in many Oahuan 

 species. The following one or two neanic whorls are covered 

 with black or blackish-olive cuticle, marked with whitish 

 streaks and zigzag figures, and fading to whitish near the 

 suture above ; often partially lost. The last whorl is white or 

 brown-tinted under a dense black cuticle of which small 

 patches are lost. There is usually but not always a nude 

 patch in front of the aperture. The interior is dull bluish- 

 gray, with a red-brown or dull rose streak on the low callus 

 within the lip, which is quite acute. The columella is dull 

 purplish. It usually bears a single paler moderate fold, but 

 there is sometimes a second more oblique and much smaller 

 fold above the principal one. 



Length 17.2, diam. 9, aperture 7 mm. ; whorls 

 Length 16.2, diam. 8.9, aperture 7 mm. ; whorls 

 There are indistinct traces of a vermiculate-mottled pat- 

 tern, like mibilosa, on the spire of A. humilis. It seems to be 

 more closely related to A. biplicata of Lanai than to any other 

 species. A. humilis is isolated in the Molokai fauna. 



