EXPLANATION OF PLATE XXI. 



Fig. 1. Eiiri.''fln}iiis Iei>ti(rii.<, Giiiitliei-. A .specimen 060 mm. loner, frum 

 the Hawkesbuiv Kiver estuary, New South Wales. 



,, 2. A<h)itip)iiji)i( raseiij(ii<f>'r, liHinsay & Ogilb}-. A s|)eciiiien ti2 mm. 

 long, from the Clarence River estuary, Xew South Wales ; 

 the scales are drawu from a smaller .spt'ciuien fiom the 

 Parramatta River estuary. 



,, 3. Ailouipoijoii icotuJt, McCulloch. Holotype, i-i mm. long, from 

 Rose Bay, Port Jackson. 



