98 AURICULELLA, OAHU. 



18. A. CHAMISSOI (Pfeiffer). 



" Shell subperf orate, oblong-pyramidal, somewhat solid> 

 under a lens sculptured with spiral striae, covered with a 

 brown epidermis, obsoletely streaked. Spire elongately conic, 

 slightly obtuse; whorls 7^, nearly flat, the last nearly equal 

 to two-fifths of the length, somewhat compressed at the base ; 

 aperture scarcely oblique, auriform; parietal lamella strong, 

 outwardly branched downwards; columellar fold small, some- 

 what twisted, white; lip whitish, slightly expanded. Length 

 8, diam. 3.5 mm. ; aperture nearly 3 mm. long, 2 mm. wide 

 below the middle" (Pfr.). 



Oahu (Baldwin, Newcomb) ; Hawaii (Sykes) ; Sandwich 

 Is. (Pfr., Mus. Cuming). 



Achatinella (Auriculella) chamissoi PFR., P. Z. S. London,. 

 1855, p. 98. Auriculella chamissoi PFR., Mon. Hel. Viv., iv, 

 p. 570; viii, 1877, p. 210. NEVILL, Hand-List Moll. Ind. Mus., 

 1878, p. 159. ANCEY, Bull. Soc. Mai. France, vi, 1889, p. 

 216. SYKES, Fauna Hawaiiensis ii, p. 376. 



Unfortunately, this species is unfigured. The single speci- 

 men in the British Museum appears to have the characters of 

 an Oahuan shell. It is dextral, and seems to be somewhat dis- 

 tantly related to A. tenella. The branching of the parietal 

 lamella is probably not constant or of specific importance, 

 as several specimens of A. castanea Pfr., from Nuuanu pos- 

 sess this character. The alleged spiral striation is a peculiar 

 feature for an Auriculella. 



19. A. TENUIS Smith. PI. 25, fig. 16. 



" Shell sinistral, very elongately conic, slightly perforate, 

 thin, somewhat diaphanous, lightly striate with lines of 

 growth, brownish corneous, encircled by a pale band at the 

 middle of the last whorl; whorls 8^, scarcely convex; apex 

 somewhat obtuse ; aperture small ; lip very slightly dilated ; 

 parietal lamella somewhat thickened at the aperture ; colu- 

 mellar fold doubled, lightly reflexed, joined to the lip by a 

 very thin callus. Length 9, diam. 4 mm" (Smith). 



"Var. A. Shell brownish corneous, unicolorous" (Sm.). 



Oahu: Wahiawa, Helemano and Kawailoa (Gulick). 



