156 
aperture ovate ; lip acute, thickened within ; columella short, with a 
terminal plication; colour yellowish (or cinnamon), slate or fawn ; 
columella and aperture white. 
This uncommon species I take pleasure in dedicating to Dr. B. W. 
Budd of New York, who has largely contributed in assisting others 
to build up a scientific reputation in the United States. 
74. ACHATINELLA Emmersonit (Pl. XXIV. fig. 74). A. testa 
conica, polita, dextrorsa, solidiori ; anfractibus 6, rotundis, supra 
marginatis ; sutura distincta ; apertura subovata, intus peralbida ; 
columella brevi, tuberculata ; labro acuto, intus nigro-marginato ; 
teste superficie externa omnino margaritaceo-alba. 
Long. : ; lat. = poll. 
Hab. District of Waialua. 
Shell conical, polished, dextral, rather solid; whorls 6, rounded, 
margined above ; suture distinct ; aperture subovate ; columella short, 
tuberculate ; lip acute, margined with black within ; aperture inter- 
nally pure white; exterior of shell uniform pearly white. 
This shell in its general aspect is the complete counterpart of 
A, Mighelsiana of Pfeiffer. The latter species is from Molokai. 
This is clearly distinct, as may be seen by a cursory examination of 
the two species. 
75. ACHATINELLA BIPLICATA (Pl. XXIV. fig. 75). A. testa dex- 
_trorsa, elongato-cylindrica ; anfractibus 7, rotundis, longitudina- 
liter valde striatis ; sutura profunda; apertura parva, subovata ; 
labio subcalloso ; columella biplicata; labro acuto, intus submar- 
ginato ; colore subroseo, epidermide fusco, tenui partim obtecta ; 
anfractibus supremis nigris ; apertura intus rubra. 
Hab. Ranai, Sandwich Islands. 
Shell dextrorsal, elongately cylindrical ; whorls 7, rounded, longi- 
tudinally strongly striated; suture deep; aperture small, subovate ; 
inner lip rather callous; columella biplicate ; outer lip acute, sub- 
marginate within ; colour rosy, partly concealed by a thin brown epi- 
dermis ; upper whorls black ; aperture red within. 
76. ACHATINELLA SEMICARINATA (Pl. XXIV. fig. 76). A. testa 
dextrorsa, solida, ovato-conica, longitudinaliter substriata; an- 
Sractibus 5, planulatis, supra marginatis, ultimo in medio angulato 
et semicarinato ; apertura ovata ; columella valde uniplicata, plica 
contorta, dentiformi ; labro antice producto, intus valde margi- 
nato ; colore stramineo ; apertura intus alba. 
Hab. Island of Ranai. 
Shell dextrorsal, solid, ovately-conical, longitudinally substriated ; 
whorls 5, flattened, marginate above the last, angulated in the middle 
and semicarinated ; aperture ovate ; columella ending in a tortuous, 
obtuse, dentiform plait ; outer lip anteriorly produced, strongly mar- 
ginate within ; colour pale yellow; aperture white internally. 
A straw-coloured conical species, with the last whorl partially sur- 
rounded with an elevated keel. 
