224 AMASTRA, OAHU. 



without notes concerning the station and habitat, except that 

 it is from the Sandwich Islands" (Smith). 



The original figure is copied, pi. 27, fig.18. In pi. 38, fig. 

 34, we have given- an enlarged figure of the same unique type 

 specimen, now in coll. Boston Society of Natural History. It 

 is undoubtedly a rather turrited example of A. intermedia, 

 almost exactly like some of the shells from Lihue. The in- 

 ternal border of the outer lip and the columella above the fold 

 are violaceous rather than "brownish." Length 20, diam. 

 10.8 mm. ; 6% whorls. 



50. A. PORPHYREA (Newcomb). PI. 33, figs. 14 to 21. 



Shell rather solid, acuminately conical. Whorls 7, subcari- 

 nated above, plano-convex ; suture deeply impressed. Aper- 

 ture subovate, contracted below ; lip thin ; columella short, 

 terminating in a twisted plait. Epidermis thin and black; 

 striae longitudinal and strong; color beneath epidermis of a 

 leaden hue, with numerous transverse lines encircling the 

 shell. Length .75, diam. .4 inch. (Newc.) 



Oahu: Waianae (Newcomb, type loc.). Waianae and Lihue 

 (Gulick) ; near Mt. Kaala (Thwing) ; main range at Ahonui 

 and Wahiawa (Gulick) and Kahana (C. M. Cooke). 



Ackatinella porpliyrea NEWC., P. Z. S., 1853, p. 136, pi. 22. 

 f. 16 ; Ann. Lye. N. H. of N. Y., vi, p. 326. PFR., Monogr., 

 iv, 554. THWING, Orig. Descript., p. 156, pi. 3, f. 16. Achati- 

 nella grossa PFR., P. Z. S., 1855, p. 204; Monogr., iv, p. 551. 

 A. grassa Pfr., HARTMAN, 1888. 



This species may prove to be indistinguishable from A. in- 

 termedia Nc., which seems to be connected with porphyrea by 

 intermediate forms. In two lots from Newcomb, none of the 

 shells retain an outer coat of "thin and black" epidermis. 

 They vary from about the size given by Newcomb to longer, 

 less obese forms, 19x11 mm. to 22x11.5 mm. The ground- 

 color is a dull, livid, dark red, with or without darker and 

 lighter streaks, and sometimes having indistinct spiral lines. 

 A subsutural narrow band is yellowish, sometimes indistinct, 

 but more often inconspicuous. The stria? are livid whitish in 

 some of the shells. The apical whorls are dull blackish-purple 



