MELVILL AND STANDEN : SHELLS FROM LIFU. 315 



semipellucidis fenestralibus vittatis catenis spiraliter sitc- 

 cincto, apertura oblonga, apud basim latiore^ labro extus 

 recto, simplice, margine columellari uniplicato. 

 Long., 4, Lat., 1-50 mill. 



A curious species, which, of plain appearance, is relieved 

 by a spiral band on the last whorl, just above the middle, of 

 semi-pellucid window-like filleted catenations ; this is not, so far 

 as we can make out, owing to any less deposit of shelly matter, 

 but the whole substance, while as thick, is rendered semi- 

 transparent by some process that needs further study. We do 

 not know of this character in any other species. Many speci- 

 mens. To this, one of the most interesting of this consign- 

 ment, we append the name of the discoverers, the Rev. James 

 and Mrs. Hadfield. 



