149 
55. ACHATINELLA oRNATA (Pl. XXIV. fig. 55). A. testa sini- 
strorsa, acute pyramidali, nitida; anfractibus 6, plano-convezis, 
supra marginatis ; sutura bene impressa ; apertura in testa adulia 
subquadrata, in immatura subovata; labro margine subincrassato ; 
columella lata et complanata ; teste superficie undulis alternanti- 
bus vel signis ziczac albidis vel nigris, longitudinaliter dispositis, 
obtecta, cum vitta subcentrali transversa nigra, interdum etiam 
cum albida contigua infra in anfr. ultimo. 
Long. 3 lat. = poll. 
Hab. E. Mani. 
Shell sinistral, acutely pyramidal, shining; whorls 6, plano-con- 
vex, margined above; suture well-impressed ; aperture subquadrate 
in 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. 
56. 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, albo; colore umbroso, cum linea suturali flava, interne 
ceruleo-albido. 
Long. x3 lat. a poll. 
Hab. Waianoe, Oahu. 
Shell conically ovate; apex acute; whorls 6, rounded, not mar- 
gined ; aperture ovate; columella short, plicately toothed ; lip semi- 
Iunar, thickened and white; colour dark umber, with a yellow sutural 
line; within bluish white. 
We are compelled to separate this and another, the 4. reticulata, 
from A. nucleola of Gould, from which they differ in important and 
permanent characters. 
57. ACHATINELLA ELEGANS (Pl. XXIV. fig. 57). A. testa conico- 
elongata, polita, nitente, solidiori ; anfractibus 6, plano-conveais, 
superne marginatis ; sutura bene impressa; apertura subovata ; 
labro albo, expanso, subreflero, in medio subcontracto, intus 
adaucto ; columella brevi, plana et subdentata ; colore albo et per- 
fusco, modo secundum lineas ad longitudinem, modo maculis latis 
alternunte, nonnunquam cum fascia alba, suturali et altera in anfr. 
. ventrali addita. 
18 
Long. 553 lat. - poll. 
Hab. UHauula, 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 ; 
