lo New Species of Amastra. 



A. umbilicata var. pluscula, u. var. 



PL C. Fig. 2. 



The shell is umbilicate. The umbilicus being decidedh^ 

 wider than in A. umbilicata; broadly conic, rather thin, in its fossil 

 state of a light brownish-red color and beginning on the back of the 

 last whorl shading to an almost pure white at the margin of 

 the aperture. The aperture is large, oblique, strongly convex 

 along its outer margin and scarcely angulate below. Columella 

 slightl}' oblique, furnished with a very minute oblique fold deep 

 within. Umbilicus nearly circular furnished with a distinct spiral 

 sulcus opposite the columellar fold. 



Length 13. i, diam. 7.2, apert. 6.2 mm.; 6^3 whls. (Holotype) 

 " 12.7, " 7.3, " 6.2 " 6>^ " 

 " 11.4, " 6.4, " 5.2 " 634: " 



Hawaii: Kapulehu, in the district of North Kona, about 

 18,000 feet elevation (Gouveia). 



Holotypes and cotypes No. 41,978, paratypes No. 41,979, 

 Bishop Museum and in the Gouveia collection. 



This species is very common in its fossil state along the govern- 

 ment road between Wainiea and North Kona, A number of the 

 specimens have such a fresh appearence that it does not seem 

 possible that they have been very long dead. Most of the 

 specimens were found in earth under lava blocks. It differs prin- 

 cipally from A. ultima hy its larger size and less convex whorls. 

 This variety differs from typical A. umbilicata mortici?ia not only 

 by its larger umbilicus but also by its proportionalh- wider and 

 larger aperture which is not distinctly angled below, and its much 

 less developed columellar fold. 



Subgenus Amastra. 



Section Amastrella. 



i^Rugulosa Series.) 



A. remota, n. sp. 



PL A. Fig. 3. 



The shell is imperforate, dextral, solid, long-ovate, in its fossil 



state whitish below shading to a pale russet above and without 



[228] 



