56 



is widely and deeply crenate with broad radiating furrows ; 

 the centre of the base being smooth and gently convex." 

 Length about sVinch. 



This variety is described by Messrs. Parker and Jones, 

 from shore-sand obtained at Swan River, Western Australia, 

 I found my specimen in the same year, 1865, and recognised 

 it at once from their figure and description, then just pub- 

 lished. At that time I believe my "sjoecimen and theirs 

 were the only recent examples which had been met with, 

 and it is curious to notice that they occurred at opposite 

 sides of the globe, giving promise of the very wide distri- 

 bution which this remarkable and beautiful form of Lagena 

 has since been found to have. 



In the Challenger Report, Mr. Brady says/'Lagena crenata 

 is a somewhat rare form, and though it has been found in a 

 considerable number of localities, it is nowhere abundant. 

 The distribution list includes several points in the British 

 seas, at depths of less than 60 fathoms ; the North Atlantic, 

 west of Ireland, 183 fathoms ; the Cape of Good Hope, 15 to 

 20 fathoms ; Australia shore-sands ; Bass Strait, 38 fathoms ; 

 and three stations in deep water in the South Pacific, from 

 2,825 to 2,425 fathoms." To these localities, Mr. Wright 

 adds off Corfu 36 fathoms, a lovely specimen obtained. 



With regard to the scarcity of this variety, I may say 

 that during the twenty yenvs which have passed since my 

 specimen was found, extremely few have been met with in 

 British seas, although dredging has been carried on so per- 

 sistently all round our coasts; I believe in fact that the 

 whole number could still almost be counted on the fingers 

 of one hand. The exact record, according to Mr. Wright, is 

 as foUowB : 



"It was obtained by Mr. Brady either off" Shetland or 

 Hebrides, but I cannot, he says, at the moment lay my 



