AMASTRA. 45 



The aperture is rather narrow; outer lip thin; columellar 

 margin is reflected half over the umbilical crevice, and bears 

 a small, steeply ascending lamella. Length 11.4, diam. 5.5 

 mm., aperture 5 mm. ; 5iX> whorls. 



It will be noted at once that the apex, the pattern of color 

 and the columellar fold are those of A. affinis; but the shell 

 is more slender than any affinis we have seen ; it is also some- 

 what thinner, and has a conspicuously open perforation. We 

 can only suggest that lincolata, as a close ally of affinis, is 

 to be looked for in Maui. 



A. NEGLECTA n. sp. PI. 7, fig. 20. 



The other two shells on Newcomb's card of lincolata differ 

 from the preceding in the following particulars. They are 

 imperforate, like A. affinis; the shape is more broadly and 

 regularly conic; the cuticle shows no dark variegation what- 

 ever; the aperture is wider, and the columellar fold is decid- 

 edly stronger and ascends less steeply. It seems to have been 

 a shell of this kind which Newcomb figured in the P. Z. S. 

 It is covered with a tawny-olive cuticle, and is bluish white 

 where this is eroded in front of the aperture ; apical whorls 

 brown. It differs from A. affinis by the stralghtly conic 

 spire, which is narrower towards the apex, by the stronger, 

 less steeply ascending columellar fold, and the absence of 

 variegation. 



Length 12.7, diain. 6.2, aperture 5.5 mm. ; 6 whorls. 



Length 12, diam. 6.7, aperture 5.5 mm. ; 6 whorls. 



Maui ? Type in Newcomb coll., Cornell University. 



? Achatinella lineolata NEWC., P. Z. S. London, 1853, pi. 

 23, f. 29. Not the description. 



While decidedly of Mauian type, we cannot unite this with 

 A. affinis or any allied species seen. A. johnsoni (which 

 may prove to be a dark form of affinis) differs in shape, color 

 and the columellar fold. A. aniictti, which seems close to 

 neglecta in shape, is described as differing by its rough 

 epidermis and purplish color. Its apex is undescribed, and 

 the locality unknown. 



It will be noticed that neither of these shells agrees exactly 



