1917.] NATURAL SCIENCES OF PHILADELPHIA. 211 



These notes apply to the typical lot in the Pease collection M. C. Z.^ 

 which is labelled "Hawaii." There is also a numerous, wholly 

 similar, series in A. N. S. received from Pease, No. 37834. 



The shape varies somewhat, fig. 1 being of the prevalent form. 



Length 2.55, diam. 1.9 mm. ; 4f whorls (typical specimen, £g. 1). 

 2.35, " 1.8 " (wide specimen, fig. 2). 

 " 2.7, " 1.7 " (narrow specimen) . 



In a small series from Waikiki beach, near Honolulu, the same 

 patterns occur. 



At Haleiwa I found the typical pattern, also similar with a pale 

 peripheral line, and a form with lineolation throughout, in isabella 

 color. 



One specimen from the north shore of Kahoolawe is isabella colored,. 

 in typical pattern. 



Alcyna kuhnsi n. sp. PI. XV, fig. 9. 



The shell is openly perforate, globosely ovate, solid, varying in 

 color from coral pink to eugenia red, spotted with white in varying 

 patterns (the type specimen coral pink, having a series of white 

 blotches below the suture on the last whorl, a series of spots above a 

 pale peripheral line, and scattered spots in the intervals; other shells 

 being darker with very few spots, olive-buff with irregular longitu- 

 dinal lineolation of red and the typical white spots, etc.) ; the apical 

 whorl white, the next white or olivaceous. Sculpture of encircling 

 impressed lines at and below the periphery. Columellar area broad,, 

 white. Tooth conical, median on the columella. Lip thickened but 

 beveled to an edge, the whorl noticeably swollen behind it. 



Length 1.65, diam. 1.3 mm.; 4 whorls. 



Off Waikiki (between Honolulu and Diamond Head), in 25 to 50 

 fathoms, D. B. Kuhns, 1917. Type No. 117055, A. N. S. P., from 

 No. 8395, Thaanum Coll. 



This species was taken in some numbers. It differs from A. rubra 

 by the small size, short contour, open perforation and different 

 shape of the columellar tooth. 



Alcyna kuhnsi humerosa n. subsp. PI. XV, fig. 8. 



The shell is openly perforate, globular-conic, the last whorl obtusely 

 angular at the shoulder, flattened below the angle; smooth and 

 glossy, but engraved at and below the middle with spiral impressed 

 lines, of which there are about 14. Color pale pinkish cinnamon,, 

 irregularly lineolate longitudinally with old rose, the lines not reaching 



