AMASTRA, OAHU. 169 



oblique; interior purple, becoming paler and a little thick- 

 ened near the lip. Columella short, bearing a moderate and 

 not very oblique fold below the middle, the edge dilated 

 above the fold. Parietal callus thin, purple. Length 10, 

 diam. 7.7, aperture 5.3 mm. ; 5 1 ^ whorls. 



Oahu: Opaiula (Irwin Spaldiug). Type to be deposited 

 in the Bishop Museum. 



This peculiar shell is probably a derivative from the A. tex- 

 tilis stock, but its locality is far to the northwest of the text-ills 

 area. The coloration a greenish-yellow suffusion over dark 

 red-brown is the same as in some forms of textilis from Nuu- 

 anu and elsewhere. The summit is more obtuse than in tex- 

 tilis, and the last whorl retains a juvenile feature in the an- 

 gulation of the periphery in front. It is a very rare species, 

 known up to this time by two specimens, taken by Mr. Spal- 

 ding. The shorter shape and very obtuse summit differentiate 

 A. gulickiana from the small varieties of A. textilis. It is a 

 very distinct species. 



15. A. SPALDINGI Cooke. Plate 30, fig. 14 ; pi. 38, fig. 13. 



'The shell is imperf orate, dextral, cylindrically ovate, 

 somewhat thin, irregularly and faintly striate with lines of 

 growth, the third whorl distinctly and diagonally striate, the 

 third and fourth whorls having a distinct spiral thread just 

 above the sutures, the first three whorls light brown with a 

 yellowish tinge, the lower three of a uniform dark resinous 

 chestnut. Spire subcylindrical, with slightly convex outlines. 

 apex somewhat obtuse. Suture simple, hardly impressed. 

 "Whorls 6 l / 2 , increasing somewhat regularly, the embryonic 

 somewhat convex, the rest flatly convex, the last cylindrical, 

 tapering gradually towards the base. Aperture subpyriform, 

 bluish within, scarcely oblique. Columella nearly straight, 

 hardly twisted; columellar fold basal, rather small, thin, ob- 

 lique, flexuous. Outer margin of lip regularly curved, erect, 

 thin, forming a slight angle with the base of the columella ; 

 columellar margin thin, appressed, adnate. Length 18.9, 

 diam. 9.6, length of ap. (diagonal) 8.1 mm." (Cooke). 



Oahu: Summit of Konahuanui, at 3,300 ft. (Spalding). 

 Type no. 16451, Bishop Museum. 



