EXPLANATION OF PLATE XIII. 



Pig. L — Platycephaliis arenarius, Ramsay and Ogilby. A 

 specimen 271 mm. long, from twenty-two miles S.W. 

 of Double Island Point, Queensland. 



Fig. 2. — Centrophorus scalpratus, sp. nov. Type, 870 mm. 

 long, from the Victorian coast. 



Fig. 3. — Lower view of head of same specimen as Fig. 2. 



Fig. 4. — Anterior dorsal spine of same specimen as Fig. 2. 



Fig. 5. — Upper teeth of same specimen as Fig. 2. 



Fig. 6. — Lower teeth of same specimen as Fig. 2. 



Fig. 7. — Scales from upper jiortion of side of same specimen 

 as Fig. 2. 



