322 scharff: shells from the alluvium. 



twenty-five years good work at both wading and dredging. 

 At one stretch I took up the whole time of six months 

 examining all the inlets of Port Jackson in all weathers, and 

 up to the present have not even found a dead specimen. 



I have found it in very good condition at Port Stephens, 

 north of Port Jackson, after east and southeast gales we have 

 obtained large numbers on the long beaches between the 

 Macleay and Bellenger Rivers, also on all beaches and head- 

 lands intermediate between those and the Clarence River on 

 the north. My opinion is that it is strictly a deep water shell 

 like C. Walkeri and SaiilcB, and its station of being found 

 under stones must be very rare indeed, some of my examples 

 from the Ninepin Head, south of the Bellenger, are nearly 

 jet black, interior dark blue. 



27. C. ziczac L. Peel Island; only one found. 



It is interesting to know that Mr. Coxen obtained this 

 fine and well known species in Moreton Bay, I believe it is 

 the first recorded Australian habitat. 



THE CONCHOLOGICAL FAUNA IN THE ALLUVIUM 

 OF RIVERS; HOW TO PROCURE THE VARIOUS 

 SPECIES AND THEIR COMPARATIVE NUMBERS, 



By ROBERT .SCFIARFF, 

 Vice-Py-esidcnt of the C. S. G. B. iSj^ /. 



(Paper read before the Conchological Society of Great Britain and Ireland.) 



The different kinds of land and freshwater shells yearly swept 

 down by the floods of a river have hitherto been very little studied 

 by conch ologists, however, there can be no doubt that the results 



J.C., ii., Nov., ISTt) 



