PLATE 15. 



SCYMNORHINIDAE. 



Fig. 1-3. SoMNiosus BREViPiNNA (Page 240). Fig. 4-6. Somniosus microcephalus (Page 241). 



1. Lateral view of a specimen 75 inche.s long. 



2. Teeth from side near the front end of the jaw. 



3. Scales from the middle of the flank. 



4. Lateral view of a specimen 106 inches long. 



5. Teeth from near the front end of the jaw. 



6. Scales from the middle of the flank. 



