222 AMASTRA, OAHU. 



49. A. INTERMEDIA (Newcomb) . PI. 33, fig. 8; pi. 34, figs. 6 

 to 12. 



"Shell dextral, cylindrical; whorls 7, rounded; suture 

 rather deep ; aperture small, subovate ; columella with a small 

 flexuous plait ; lip acute ; striae numerous, well developed, and 

 longitudinal to the shell ; color uniform dark brown, usually 

 lighter at the sutures, interiorly of a bluish-white or slate 

 color; columella bluish- white. Length fourteen-twentieths, 

 diom. seven-twentieths of an inch" [17.5x8.75 mm.] (Newc.). 



Oahu: Wadanae (Newcomb) ; ridges of Nuuanu [?], and 

 Waianae Mts. below Kaala (Perkins) ; Waianae and Lihue 

 (Gulick). 



Achatinella intermedia NEWC., P. Z. S., 1853, p. 135, no. 

 14, pi. 22, f. 13 (1854) ; Ann. Lye. N. Y., vi, p. 325. Amas- 

 tra i., SYKES, Fauna Hawaii ensis, p. 338. Amastra conico- 

 spira SMITH, P. Z. S., 1873, p. 86, pi. 10, f. 10. 



We are unable to find any characters to distinguish be- 

 tween some varieties of this species and of A. porphyrea. 

 Specimens from Wadanae are figured, pi. 34, figs. 11, 12. The 

 first half -whorl is smooth; then slightly arcuate stria? ap- 

 pear; these are rather strong on the first half of the second 

 whorl, after which they become very fine and close, and 

 weaker towards the lower suture. The embryo seems to com- 

 prise nearly 3 whorls. It is narrower, higher and more conic 

 than in A. rubens. The spire is nearly straightly conic in 

 Waianae specimens, yet there is a .slight convexity in the out- 

 lines of the lower part, while near the summit it is slightly 

 contracted. This double curvature is more conspicuous in 

 some of the shells from Lihue. Subsequent whorls have rather 

 coarse, low and irregular growth-wrinkles. The first 3 or 4 

 whorls are of a uniform dark purple-brown color; then a 

 yellow line appears at the suture, widening to an ill-defined 

 band on the last whorl, and the ground-color changes to dark 

 reddish-brown, with some paler streaks along wrinkles, and 

 usually remains of dull, blackish streaks of a deciduous outer 

 layer of cuticle. There is no distinctly lighter patch in front 

 of the aperture, but some shells obscurely show darker bands 

 in the ground-color there. The aperture is white or blue- 



