141 
Shell light corneous, shining, pellucid, conical, thin ; whorls 6, 
rounded ; aperture oyate; lip slightly thickened; columella termi- 
nating in a twisted oblique white plait. 
31. ACHATINELLA CRASSILABRUM (Pl. XXIII. fig. 31). A. testa 
dextrorsa, conico-ovata, apice acuminato, infra ventricosa, soli- 
diori ; anfractibus 6, rotundis ; apertura ovata ; labro intus valde 
incrassato; columella brevi, in plicam brevem, obliquam termi- 
nante ; striis longitudinalibus fortibus ; superficie anfractus ultimi 
sepe cicatricibus notata ; colore anfractus ultimi subflavo-albido, 
anfractuum reliquorum fusco vel nigro. 
Long. 3 lat. S. 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 ; Jon- 
gitudinal strie strong, surface of the last whorl often marked with 
cicatrices ; body whorl yellowish white, other whorls dark brown or 
black. 
32. ACHATINELLA CORNEA (Pl. XXIII. fig. 32). 4. testa in- 
equali, acuta, conica, apice acuminato, tenui, corneo ; striis longi- 
tudinalibus minutis ; anfractibus 7, rotundis, ultimo inflato ; aper- 
tura subovata; labro tenui, translucido; columella recta, alba et 
dente plicato, transverso munita ; colore teste ubique fusco-corneo, 
columelle et dentis albido. 
10 
Long. ;;; lat. poll. 
Hab. 4 
Shell irregularly acutely conical; the apex pointed ; last whorl in- 
flated; thin, corneous, with minute longitudinal striz; 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 (Pl. XXIII. fig. 33). A. testa elon- 
gato-conica ; anfractibus 7, fere planis, supra paullo marginatis ; 
sutura modice impressa; apertura elongato-ovata; labro incrassato, 
albido, cum callo interno centrali; columella brevi, dente proji- 
ciente, valde plicato munita; colore externe corneo-pallido. 
Long. x3 lat. 4 poll. 
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. 
