ACHATINELLA CONCAVOSPIRA. 351 



Named for Mr. Ernest Lyman. Types in the Baldwin col- 

 lection. 



This is a well-marked subspecies, always sinistral, solid, 

 with long, straightly conic spire, the sutural white band nar- 

 row, usually reduced to a mere line, or sometimes absent. The 

 typical pattern is carob-brown with speckled white streaks, 

 more or less interrupted by spiral lines or bands of the dark 

 color, or reduced to a few whitish flecks on a blackish carob- 

 brown ground (figs. 8 to 8c, Palihua iki, coll. by Dr. C. M. 

 Cooke). 



Another pattern, from the same locality and collector, is 

 ochraceous tawny, with streaks and spiral lines of warm buff, 

 a pale line at the suture or none (fig. Sd). 



Other shells of this lot are cartridge buff, almost white, 

 with the faintest traces of pale ochraceous salmon bands, fig. 

 Se. 



Length 23.8, diam. 13.2 mm. ; 6y 2 whorls. 



Length 22.5, diam. 13.5 mm. ; 6% whorls. 



Length 20, diam. 10.3 mm. ; 6i/ 2 whorls. 



The typical forms of lymaniana occur along the ridge south 

 of Green Peak. North of Green Peak it is mixed with forms 

 with the napus pattern, buff with a few wide dark bands, 

 the shell sinistral probably in a hybrid colony. Specimens 

 from the Lihue side, under Palikea, are figured, pi. 61, figs. 

 9 to 9Z>, coll. by Spalding. Pale forms of lymaniana pass into 

 sordida Newc., so that there seems to be no definite distinction 

 between selected individuals although there may be a differ- 

 ence in the average constitution of the colonies. 



It is also likely that some adumbration of the lymaniana 

 stock has penetrated as far north as the southern ridges of 

 Popouwela, forming hybrids with the gray and banded mus- 

 telina there. PI. 63, fig. 11 has the appearance of being a 

 lymaniana segregate of this stock, and there are others in the 

 collection before me. 



41. A. CONCAVOSPIRA Pfeiffer. PL 52, fig. 16 ; pi. 61, figs. 12- 

 \2d ; pi. 62, figs. 24, 25. 



"Shell subperforate, dextral. ovate-turrite, solid, striatu- 



