EXPLANATION nV ri,ATE XLII. 



l''ii?. 1. Totinn lefracutiilti, Hedley. From the type, wliieli ]i:»k live arlnlt 

 whorls ill a lenjSfth of 198 nun. Fi'oni 40-SO I'athonis off 

 CJreen Cape, New Soutli Wales. 



