210 . PROCEEDINGS OF THE ACADEMY OF [June, 



Key to Species of Alcyna. 



a. Shell very minutely or scarcely perforate ; whorls rounded, without 

 raised striae. 

 6. Base and spire having fine, engraved spiral lines; of uniform 



color, longitudinally lineolate or spotted A. rubra Pse. 



h^. No engraved lines, smooth; spirally banded with red, 



A. kapiolanice, n. sp. 

 a^ Shell openly perforate. 



b. Having raised spiral stria^ or small ridges. 



c. Marked with red spiral lines or narrow bands; varix behind 



the lip low A. lineata Pse. 



cK Marked with flammules or longitudinal stripes (or uniform 

 white?) ; varix behind lip well developed 



A. subangulata Pse. 



6^ Whorls not ridged or striate, with minute engraved lines at and 



below middle of the last whorl A. kuh7isi, n. sp. 



A. striata Pse., which I have not seen, is described as having 

 impressed lines, whorls angular below suture, speckled and mottled 

 w4th black and gray, whitish below the suture. 



Alcyna rubra Pease, pi. XV, figs, l . 2. 



1860. Alcyna rubra Pease, P. Z. S., p. 436. 



1862. Phasianella rubra Pease, Reeve, Conchologia Iconica XIII, PI. 6, 



fig. 18«, b. 

 1888. Alcyna rubra Pse., Pilsbry, Man. of Conch., X, p. 182. 

 Type in British Mus.; metatypes No. 31720, M. C. Z., and No. 37834, 



A. N. S. P. 



Pease's description was reproduced in Manual of Conchology. 

 He overlooked the fine, engraved spirals, of which there are six on 

 the penult whorl, more on, the next earlier. On the last whorl they 

 are more or less weakened or even wanting in the peripheral region 

 and above, but distinct on the base. There is a vertical groove at 

 the axis, but not a perforation. As in other species, the columellar 

 tooth appears stronger in an oblique view, but the degree of emer- 

 gence varies individually. The whorl has a very low, broad swelling 

 behind the lip in adults, but it is often scarcely noticeable. 



The color, as seen in the mass, is old rose, but the shade varies 

 noticeably in different specimens. There is a white area around the 

 columella, and the apical whorl is slightly paler. Otherwise the 

 color may be nearly uniform (fig. 2) or marked with darker oblique 

 lines on a paler ground on the spire, blotched with buft' or white 

 below the suture of the last whorl, with scattered whitish dots over 

 the rest of the surface (as in Reeve's fig. 18a, and our fig. 1), or 

 exceptionally there may be oblique red lines also on the last whorl. 

 The blunt lip-edge is touched with rose color in adult shells. 



