139 
flected, above acute and thickened within; columella short, stout, 
slightly twisted, with a callus spread over and nearly closing the um- 
bilicus; aperture oblong-ovate ; colour of columella, lip and suture 
white, sometimes tinged with yellow; shell white, with or without 
numerous transverse lines of a brown or black colour. , 
This species makes a near approach to 4. mustelina of Mighels, 
but is more elongate in form, with the lineations much stronger, and 
never passes into the variety of mustelina with the depressed spire 
and obese body whorl. The locality is also different, which is always 
worthy of particular remark in examining the shells of this genus. 
25. ACHATINELLA GuaBRa (Pl. XXII. fig. 25). A. testa conico- 
ovata, fulgente ; anfractibus 6, interdum inflatis, supra margina- 
tis; sutura bene expressa; apertura ovata; labro subreflexo, e nigro 
fusco margine nigro, interne incrassato ; columella brevi, robusta, 
expansa, in plicam contortam desinente ; colore argillaceo-ceruleo 
vel plumbeo, pallidiore in anfractuum parte superiore, interdum 
Sasciis transversis albidis vel castaneis. 
Long. Z; lat. uz poll. 
Hab. Kolau poko. 
Shell conically ovate, glossy ; whorls 6, somewhat inflated, mar- 
gined above; suture well-marked ; aperture ovate; lip slightly sub- 
reflected, dark brown edged with black, thickened within ; columella 
short, robust, expanded, and terminating in a twisted plait ; colour 
bluish slate, much lighter on the upper portion of the whorls ; some- 
times transversely banded with white or chestnut. 
26. ACHATINELLA TESSELLATA (Pl. XXIII. fig. 26). A. testa 
sinistrorsa, oblongo-ovata, solida; anfractibus 6, convexis, ultimo 
paulum inflato, superficie minutissime decussata ; colore albido- 
flavescente, vittis transversis nigris vel castaneis diverse striato, 
aut non; anfractibus superioribus semper nigro et albido tessella- 
tis ; apertura alba vel rosea, ovata, infra effusa ; columella brevi 
et late callosa. 
Long. =; lat. >, poll. 
Hab. Molokai. 
Shell sinistral, oblong-ovate, solid; whorls 6, convex, the last some- 
what inflated ; white or fawn-coloured ground, very finely shagreened, 
plain, or variously striped with transverse black or chestnut bands ; 
the upper whorls always tessellated black and white ; aperture white 
or roseate, ovate, effuse below; columella short and broadly callous ; 
lip expanded, thickened within and semireflected; animal light 
grey, tentacles black, mantle slate-colour. 
Found at Kalai on Tutui trees, and on the broad leaf of the Ti. 
Has some resemblance to virgulata, Mighels, but the tessellated 
top at once distinguishes it. 
27. ACHATINELLA SorDIDA (Pl. XXIII. fig. 27). A. testa elon- 
gato-conica, solida ; anfractibus 7, subrotundis, supra marginatis ; 
apertura parva, leviter contracta; labro infra subreflexo, supra 
acuto ; interne incrassato ; columella brevi, subplicata, cum callo 
