164 " ENDEAVOUR " SCIENTIFIC RESULTS. 



Family PLATYCEPHALIDJE. 

 Genus Platycephalus, Bloch <£• Schneider. 

 Platycephalus arenarius. Ramsay <£■ Ogilby. 

 Sand Flathead. 

 (Plate xiii., fig. 1 ; fig. 3.) 

 Platycephalus arenarius, Ramsay and Ogilby, Proc. Linn. 

 Soe. N.S.Wales, x., 1886, p. 577. Id., Stead. Ed. 

 Fish. N.S.Wales, 1908, p. 113. 



D. viii. 13 ; A. 13 ; P. 20 ; V. i. 5 ; C. 13. L. lat. 74. 

 Head, to end of opercular lobe, 3-1 in the length to the 

 hypural joint. Snout 3-4 in the head. Eye 1-6 in the snout, 

 and 5-7 in the head. Interorbital width 1-8 in the eye. 

 Third dorsal spine 2-2, second dorsal ray 2-5, longest pectoral 

 ray 2-1, and fourth ventral ray 1-5 in the head. 



Ridges of the head low, smooth, not ending in spines. A 

 minute anterior orbital spine. Interorbital space flat. Two 

 ridges extend backward from the orbits, which join a broken 

 series of smaller ridges on either side of the small median one. 

 A low series extends from the eye to the suprascapular. 





//'"-'^X 



■■.. ,/ 



Fig. 3. 



Anterior nostril tubular. Two strong preopercular spines, 

 the lower the longest, the other directed obliquely upwards. 

 Maxillary extending to below the anterior third of the eye. 

 Teeth well developed : they are canine-like on either side of 

 the premaxillary symphysis, but rapidly change to villiform 

 ones which form a band on either side ; mandibular teeth 

 conical, uniserial ; vomerine teeth in a single series, forming 

 an arch, the outer ones large and canine-like ; palatine teeth 

 uniserial, conical. 



I 



