144 
This is the most depressed of the genus, but distinctly preserves the 
generic characters, and in the variety exhibits a habit in land shells, 
found, perhaps, only in Helicina agglutinans of Sowerby. 
40. ACHATINELLA TEREBRA (Pl. XXIII. fig. 40). A. testa tur- 
rita; anfractibus 6, rotundis, supra marginatis, ultimo subinflato ; 
sutura bene impressa ; apertura elongato-ovata ; labro subreflexo, 
interne adaucto; columella brevi, in plicam prominentem, contortam 
terminante ; striis decussantibus ; colore melleo cum signis undu- 
lantibus fuscis, pene obsoletis in anfr. superioribus ; labro, aper- 
tura et columella niveis. 
Long. x; lat. 5 poll. 
Hab. W. Mani. 
Shell turreted; whorls 6, rounded, last one inflated, margined above; 
suture well-impressed ; aperture elongate-ovate ; lip slightly reflected, 
thickened within ; columella short, terminating in a prominent twisted 
plait ; striee decussating ; colour light yellow, with wave-like brown- 
coloured markings, nearly obsolete on the upper whorls; lip, colu- 
mella and aperture white. 
41, ACHATINELLA MELANOsIs (Pl. XXIII. fig. 41). A. testa dex- 
trorsa, tenui, depressa, conica; apice acuto; anfractibus 5, rotundis, 
ultimo inflato ; sutura bene impressa ; apertura subrotunda ; labro 
simplici, tenui ; columella recta, alba et in plicam valde obliquam 
terminante ; colore nigro. 
5 
Long. =; lat. = poll. 
Hab. Hawaii. 
Shell dextral, thin, conically depressed; apex acute; whorls 5, 
rounded, the last inflated; suture well-impressed; aperture subrotund ; 
lip simple, thin ; columella straight, white, and terminating in a very 
oblique plait ; colour black. 
42. ACHATINELLA PupoIDEA (Pl. XXIII. fig. 42). A. testa dex- 
trorsa, elongata ; anfractibus 7, rotundis ; sutura profunda ; aper- 
tura parva, subovata; labro simplici; columella brevi, subden- 
tata ; epidermide tenui, pallide fusca; colore anfr. ventral. albo, 
trium superiorum subroseo et reliquorum plumbeo : linee fusce zic- 
zac interdum reperiuntur in partibus superioribus anfractuum in- 
Seriorum. 
Long. ==; lat. 5 poll. 
Hab. EK. Mani. 
Shell dextral, cylindrically elongate; whorls 7, rounded; suture deep; 
aperture small, subovate; lip simple; columella short, lightly toothed; 
epidermis thin, of a light brown, beneath which the body whorl is 
white, the three above pinkish, and the others leaden: brown zigzag 
undulations are sometimes found on the upper portions of the lower 
whorls. 
43. ACHATINELLA CuRTA (Pl. XXIII. fig. 43). A. testa conica, 
sinistra, polita; anfractibus 5, rotundis, supra marginatis, ulti- 
