10 PROCEEDINGS OF TUE MALACOLOGICAL SOCIETV. 



appearing to be young. I have seen a considerable number of 

 specimens nearly equal in size, the largest not exceeding the dimensions 



given above; whereas Reeve's species measures 58 X 49 mm., and is 

 of a lighter substance and a more elongated sub-quadrate form, so 

 that its general aspect is very different from the shell now described. 



Trivia exigua, var. alba, n.var. 



Among a lot of shells recently received from New Caledonia, 

 I found several specimens of a pure-white variety of Trivia exigua, 

 Gray (more generally known as tremeza, Duclos). The specimens 

 differ from the type in being destitute of colour-mai'kings, and those 

 I have seen being of a somewhat larger size. The largest measures 

 7 and the smallest 5 mm. in length, while the typical ones before 

 me from Mauritius and Lifu averasje somethins: less than 5 mm. 



