30 



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 EMMERSONII (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 ; 

 testa superjicie externa omni ex parte margaritacea 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, within margined, black ; aperture internally 

 pure white ; exterior of shell uniform pearly white. 



This shell in its general aspect is the complete counterpart of 

 A. Mighelsiana of Pfeiifer. 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 subcallosa ; columella biplicata ; labro acuto, intus submar- 

 ginato ; color e 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- 

 fractibus 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 ; color e 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. 



