23 



* 55. ACHATINELLA ORNATA (PL XXIV. fig. 55). A. testa sini- 

 strorsa, acute pyramidali nitida ; anfractibus 6, piano-conveys, 

 supra marginatis ; sutura bene impressa ; apertura in testa adulta 

 subquadrata, subovata in immatura ; labro in margine subincras- 

 sato ; columella lata et complanata ; testa superficie undulis alter- 

 nantibus vel signis ziczac albidis vel nigris, ad longitudinem di- 

 gestis,, obtecta, cum vitta subventrali transversa nigra, interdum 

 etiam cum albida contigua infra in anfr. ultimo. 



Long. ;lat. poll. 



Hab. K. Mtmi. 



Shell sinistral, acutely pyramidal, shining ; whorls 6, plano-convex, 

 margined above ; suture well-impressed ; aperture subquadrate in the 

 adult, subovate in immature shells ; lip slightly thickened at the 

 edge ; columella broad and flattened ; surface of shell covered with 

 alternating undulations or zigzag markings of white and black arranged 

 longitudinally, with a subcentral transverse black band, sometimes 

 margined with a white one below on the last whorl. 



This is an extremely rare species, found in a limited locality, in a 

 deep ravine, at the back of Lahaina. 



ACHATINELLA ALBO-LABRIS (PL XXIV. fig. 56). A. testa co- 

 nico-ovata ; apice acuto ; anfractibus 6, rotundis, non marginatis ; 

 apertura ovata ; columella brevi, plicato-dentata ; labro semilunari 

 incrassato et albo ; colore umbroso, cum linea suturali flava ; in- 

 terne cteruleo- albida. 



Long. slat. Spoil. 



Hab. Waianoe, Oahu. 



Shell conically ovate ; apex acute ; whorls 6, rounded, not mar- 

 gined ; aperture ovate ; columella short, plicately toothed ; lip semi- 

 lunar, thickened and white; colour dark umber, with a yellow sutural 

 line ; within bluish white. 



We are compelled to separate this and another, the A. reticulata, 

 from A. nucleola of Gould, from which they differ in important and 

 permanent characters. 



y 57. ACHATINELLA ELEGANS (PL XXIV. fig. 57). A.testaconico- 

 elongata, polita, nitente, solidiori ; anfractibus 6, plano-convexis , 

 superne marginatis ; sutura bene impressa ; apertura subovata ; 

 labro albo, expanse, subreflexo, in medio subcontracto, intus 

 adaucto ; columella brevi, plana et subdentata ; colore albo et per- 

 fusco, modo secundum lineas ad longitudinem, modo maculis latis 

 alternante, nonnunquam cum fascia alba suturali altera in anfr. 

 ventrali addita. 

 Long.H; lat.|;poll. 

 Hab. Hauula, Oahu. 



Shell conically elongate, polished, shining, rather solid ; whorls 6, 

 plano-convex, margined above ; suture well-impressed ; aperture sub- 

 ovate ; lip white, expanded, subreflected, somewhat contracted in its 

 centre, thickened within ; columella short, flat and lightly toothed ; 



