18 



This is the most depressed of the genus, but carefully 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 (PI. XXIII. fig. 40). A. testtt tUT- 



rita; anfractibus 6, rotundis, ultimo subinflato, supra marginatis; 

 sutura bene impressa ; apertura elongato-ovata ; labro subreflexo, 

 interne adaucto ; columella brevi in plicam prominentem contortam 

 terminante ; striis decussantibus ; colore melleo cum signis undu- 

 lantibusfuscis, pcene obsoletis in anfr. superioribus ; labro, aper- 

 tura et columella niveis. 

 Long. 5 lat. 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 ; striae 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 (PI. XXIII. fig. 41). A. testa dex- 

 trorsa, tenui depressa conica ; apice acuto ; anfractibus 5, rotundis, 

 ultimo inflate ; sutura bene impressa ; apertura subrotunda ; labro 

 simplici, tenui; columella recta, alba et in plicam valde obliquam 

 terminante; colore nigro. 



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 (PI. XXIII. fig. 42). A. testa dex- 

 trorsa, elongata ; anfractibus T , rotundis ; sutura prof unda ; aper- 

 tura parva subovata ; labro simplici ; columella brevi subdentata ; 

 epidermate tenui, pallide fusca ; colore anfr. ventral, albo, trium 

 altiorum subroseo et reliquorum plumbeo : linecefuscce ziczac in- 

 terdum reperiuntur in portionibus superioribus anfractuum infe- 

 riorum. 



Long.il; lat.Apoll. 

 Hab. E. 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. 



t 43. ACHATINELLA CURTA (PL XXIII. fig. 43). A. testa conica, 

 sinistra, polita ; anfractibus 5, rotundis, supra marginatis, ulti- 



