ICHTHYOI.OGICAL NOTES. 93 



A re-examination of the type and unique example, with better microscopical appliances than were 

 available to Ogilby. shows his description to be inaccurate in several details. These include the structure 

 of the dorsal and ventral fins, the position of the nostrils, and the dentition. I have therefore red escribed 

 it above, with particular attention to the details wherein his description differs from mine. 



EXPLANATION OF PLATE X. 



Fig. I. — Aspidonlus maroitbm, Ogilby. Type. 50 mm. long, from Maroubra, New South Wales. 



Fig. 2. — Petroscirtes anolius, Cuv. & Val. A specimen 69 mm. long, from the Manning River 

 estuary, New South Wales. 



Fig. 3. — Pteroplatea australis. Rams. & Ogil. A specimen 712 mm. wide, from Tuggerah Lakes, New 

 South Wales. 



