KXPLANATION OF ITiATE XLIV, 



Fig. 6. Tonna luiriegdta, Lamarck. A specimen having four and a half 

 whorls in a length of 92 mm. from Western Australia. 



Kig. 7. TouDK (nttj)nll(t<-ei(, Philippi. A broken specimen from Port 

 Darwin, approximately 1;>0 mm. long. 



