15 



Shell light corneous, shining, pellucid, conical, thin ; whorls 6, 

 rounded ; aperture ovate ; lip slightly thickened ; columella termi- 

 nating in a twisted oblique white plait. 



/ 31. ACHATINELLA CRASSILABRUM (PI. XXIII. fig. 31). A. testa 



dextrorsa, conico-ovata in apice acuminata, infra ventricosa, soli- 

 diori ; anfractibus 6, rotundis ; apertura ovata ; labro intus mag- 

 nopere incrassato ; columella brevi, in plicam brevem, obliquam 

 terminante ; striis longitudinalibus fortibus ; super fide anfractus 

 ultimi scepe cicatricibus notata ; colore anfractus ultimi subflavo- 

 albido, anfractuum reliquorum fusco vel nigro. 



Long. g;lat.i poll. 



Hab. Waianoe, Oahu. 



Shell conically ovate, pointed at the apex, ventricose below, rather 

 solid ; whorls 6, rounded ; aperture ovate ; lip very much thickened 

 within ; columella short, terminating in a strong oblique plait ; lon- 

 gitudinal striae strong, on the last whorl surface often marked with 

 cicatrice* ; body whorl yellowish white, other whorls dark brown or 

 black. 



' 32. ACHATINELLA CORNEA (PI. XXIII. fig. 32). A. testa in- 

 tequali acuta, conica ; apice acuminato tenui, corneo, striis longitu- 

 dinalibus minutis ; anfractibus 7, rotundis, ultimo inflato aper- 

 tura subovata ; labro tenui, translucido; columella recta, alba et 

 dente plicato transverso munita ; colore testce ubique fusco corneo; 

 columelltE et dentis albido. 



Long. ij;lat. poll. 



Hab. ? 



Shell irregularly acutely conical ; the apex pointed ; last whorl in- 

 flated ; thin, corneous, with minute longitucQnal striae ; whorls 7, 

 rounded ; aperture subovate ; lip thin, translucent ; columella straight, 

 white and armed with a transverse plaited tooth ; colour uniform 

 dark horn ; columella and tooth white. 



; 33. ACHATINELLA LABIATA (PI. XXIII. fig. 33). A. testa elon- 

 gata conica; anfractibus 7, fere plants, supra paullb marginalis ; 

 sutura modice impressa; apertura elongate ovata ; labro incrassato, 

 albido, cum callo interno centrali ; columella brevi cum dente pro- 

 jiciente ; valde plicata ; colore externe corneo -pallido, 

 Long, g ; lat. g poll. . fr. I ',. 4> r . . YCJ. *'*.* *?. *% 

 Hab. Lehui, Oahu. 



Shell elongately conical ; whorls 7, flattened, slightly margined 

 above ; aperture elongately ovate ; lip thickened, white, with a cen- 

 tral internal callus ; columella short, with a strong plaited projecting 

 tooth ; colour of epidermis light corneous. 



Var. a. With the lower third of the last whorl dark brown. 

 This species forms a new type of the genus ; characterized by the 

 white auricular-formed aperture. It is terrestrial, and not arboreal in 

 its habits. 



