AMASTRA, OAHU. ' 195 



pauperate specimens from Waianae, evidently from several 

 colonies (nos. 1760, 1762, 1763), which agree in the main with 

 castanea, but are rather smaller, down to 14 mm. long. 



35f. A. rubens kahana n. subsp. PL 31, fig. 16. 



Similar to rubens in shape, cream-colored under an oliva- 

 ceous-brown cuticle Which is partially deciduous; the nude 

 upper whorls either white, fleshy or reddish. Outlines of the 

 spire slightly convex. Peristome rose-tinted in individuals 

 having the apex dark, white in others. Length 18.2, diam. 

 10 mm. ; whorls 6%. 



Kahana, 011 the north side of the eastern range. Types 

 1417 C. M. Cooke coll. 



35d. A. rubens infelix n. subsp. PI. 31, fig. 15. 



Smaller, more shortly ovate than A. r. kahana, the spire 

 slender near the apex, whitish under an olive-brown cuticle 

 which becomes black behind the outer lip. The latter part of 

 the last whorl is compressed peripherally, and swollen or ob- 

 tusely subangular at the shoulder. Aperture white. Length 

 14.7, diam. 8 mm. ; whorls 5!/2- 



Kahana. Types 1491 Cooke coll. 



This is apparently a depauperate form. It is just possible 

 that varieties halt ana and infelix are satellite forms of tenui- 

 labris and rnbicunda rather than of rubens, which should 

 properly belong to the Waianae range. 



36. A. SEMINIGRA n. sp. PI. 32, figs. 8, 9, 11. 



Apical whorls fleshy or purplish, fading on the last two 

 whorls to light yellow, more or less covered with pitch-black 

 cuticle, which may be in shreds throughout (figs. 8, 11), or 

 nearly continuous except in front of the aperture (fig. 9, Wai- 

 mano) . Interior white or faintly pink. 



Pig. 8. Length 21.2, diam. 10.3, aperture 9.5 mm.; whorls 



6.y 2 . 



Fig. 11. Length 17.5, diam. 9.2, aperture 8 mm. ; whorls 



Length 19, diam. 9.7 mm. 



Waimano. Co-types no. 1131 Cooke coll., figs. 8, 11 ; also 

 Wahiawa, no. 1416 Cooke coll. ; also in coll. A. N. S. P. 



