AMASTRA, OAHU. 199 



Sandwich Is. (Frick, in Cuming coll.). Western and north- 

 western' Oahu: Waialee (Baldwin); Kawailoa and Kahuku 

 (Gulick) ; Kahana (Cooke). 



Achatinella luctuosa PFR., P. Z. S., 1855, p. 204 (Feb., 

 1856) ; Monogr., iv, 554. BALDWIN, Catalogue, p. 9. Lamii- 

 nella luctuosa BINNEY, Ann. N. Y. Acad. S'ci., iii, p. 98, pi. 6, 

 f. F. Amastra luctuosa Pfr. var. sulphured ANCEY, Proc. 

 Malac. Soc. Lond., vi, June, 1904, p. 121, pi. 7, f. 9. 



The type of A. luctuosa has not been figured, and we do 

 not know that the typical form described by Pf eiffer has been 

 rediscovered. Its habitat is unknown. Baldwin and Gulick 

 have found a form differing in color, but which they referred 

 to luctuosa, in western Oahu between the southwestern and 

 northeastern ranges. It has been described as var. sulphurea 

 by Ancey. 



The Gulick collection (in A. N. S. P.) contains a set of 

 "dead" shells from Kahuku (pi. 33, figs. 12, 13), the north- 

 western extremity of Oahu. The last whorl is very pale 

 brown under a thin brown cuticle, which is persistent through- 

 out or worn-off in front of the aperture, and 'darker behind 

 the lip. The spire is pale violaceous or pale red-brown under 

 more or less covering of cuticle. Specimens measure : 



Length 14, dia.m. 9 mm. 



Length 15, diam. 8 mm.; 6!/2 whorls. 



Length 14, diam. 8 mm.; 6 whorls (fig. 13). 



Length 15, diam. 7.8 mm.; 6 whorLs (fig. 12). 



The relationships of luctuosa are somewhat uncertain. It 

 is an inornate shell with no decided 'Characters, but does not 

 seem closely related to any other species. 



38a. A. 1. sulphurea Ancey. PI. 33, fig. 11. 



' ' S'hell similar to the type, but pale buff, uniform, near the 

 aperture 'covered with shreds of pale brown epidermis. 

 Length 15.5, diam. 9.5, length of aperture 7 mm. Waialae" 

 (Ancey} . 



Specimens from "Waialei" in the Gulick collection are 

 pale buff or the spire may be pale brown. The embryonic 

 Avliorls are almost smooth. The upper part of the spire is 

 slightly pinched in. 



