AMASTRA, MAUI. 291 



Maui, may be separated by its greater size, more elongate 

 spire, and the shape of the last whorl which is not so fusi- 

 form as in that species. The suture is also more deeply im- 

 pressed. The specimen here figured [pi. 49, fig. 8, copied 

 from Sykes] is not the one whose measurements were given 

 in the original diagnosis, but a slightly smaller shell whose 

 periostracum is better preserved " (Sykes). 



In shells of maximum size the dull olivaceous-brown or 

 reddish-brown cuticle is largely lost. The columellar lamella, 

 in the Molokai shells we have seen, is very small, sometimes 

 inconspicuous in front view. 



90. A. FARCIMEN (Pfeiffer). 



'Shell subperforate, sinistral, oblong-conic, rather solid, 

 somewhat rugose; whitish under a blackish epidermis; spire 

 terminating above in an acute nude cone. Whorls 7, the 

 upper flat, the last two very convex, last whorl a little ex- 

 ceeding one-third the length, subangular in the middle. 

 Columellar fold compressed, oblique. Aperture oblique, semi- 

 oval, white within ; peristome simple, unexpanded, the colu- 

 mellar margin somewhat spreading. Length 19, diam. 9, 

 aperture 8x5 mm. (Pfr.) . 



Maui (Newcomb, in Cuming coll.). 



Achatinella farcimen PFR,, P. Z. S., 1856, p. 334; Mono- 

 graphia, iv. 552. Not Amastra farcimen Pfr., HARTMAN, 

 Proc. A. N. S., Phila,, 1888, p. 56, pi. 1, f. 5. 



Possibly a form of A. hutchinsonii ; yet Sykes, who had 

 opportunity to examine the type, makes no suggestion as to 

 its affinities. He points out that Hartman's figure of a sup- 

 posed ' typical ' farcimen belongs to some very different 

 species. The aperture is longer in farcimen than in hutchin- 

 sonii. 



Section AMASTRA s. str. 

 Series of A. nigra. 



Moderately large shells, sometimes wholly wanting dark 

 outer cuticle, but usually covered with a blackish cuticle 

 which may be more or less deciduous, not conspicuously mot- 

 tled or zigzag striped. Embryonic shell typically costate and 



