[11] COLLECTING SPECIMENS OF CETACEANS. 1167 



7. 



7. Throat smooth. 



8, Throat with folds. 



9. --> 



9. Back with a hump. 



10. Back with a fin. 



11. Back smooth. 



12. Head rounded. 



13. 



13. Head with a beak. 



14. 



14. Head pointed. 



