98 AURICULELLA, OAHU. 



18. A. CHAMISSOI (Pfeiffer). 



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

 under a lens sculptured with spiral strias, covered with a 

 brown epidermis, obsoletely streaked. Spire elongately conic, 

 slightly obtuse ; whorls T 1 /^, 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 8y 2 , 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" (8m.). 



Oahu: "Wahiawa, Helemano and Kawailoa (Gulick). 



