220). 



PLATE 11. I 



j 

 SQUALIDAE. | 



Fig. 1-4. AcANTHiDiUM ROSTR.\T0M (Page 218). Fig. 5-8. Acanthidium hystricosdm (Page \ 



1 



1. Lateral view of a specimen 31 inches long. j 



2. Head from below. 1 



3. Teeth from the front end of the jaw. 



4. Scales from near the middle of the flank. ' ! 



5. Lateral view of a specimen 36j inches long. 



6. Head from below. 



7. Teeth from the front end of the jaw. ; 



8. Scales from near the middle of the flank. 



