LIST OF ILLUSTRATIONS 



FIG. PAGE 



A stranded Rorqual (?). (From Olaus Magnus) . . Frontispiece 



1. Embryo of Porpoise to illustrate form of Tail. (From Kiikenthal) To face g 



2. Hand of Balanoptera musculus, showing disappearing ringer. 



(From Ktikenthal) . . . ,, 9 



3. Hand of Beluga, showing commencing bifurcation of ringer. 



(From Kiikenthal) . ,, 9 



4. Skeleton of Right Whale. (From Nat. Hist. Mus. Guide] . 25 



5. Embryo of Neo/neris, showing dorsal dermal plates. (From 



Kiikenthal) . . . . . . ,, 32 



6. Portion of dorsal fin of Porpoise, showing dermal ossicles. 



(From Kiikenthal) . . ,, 32 



7. Portion of skin of Neomeris, showing dermal ossicles. (From 



Kiikenthal) . . . . . . ,, 32 



8. Cervical vertebras of Right Whale (From van Beneden and 



Gervais) . . . ... 39 



9. Series of breast-bones of Toothed Whales. (From van Beneden 



and Gervais) . . . ... 43 



10. Breast-bones of Whalebone Whales. (From Fischer) . ,, 44 



11. Skull of Etirhinodelphis cochetenxii, lateral view. (From van 



Beneden and Gervais) . . ... 51 



12. Tympanic bones. (From van Beneden and Gervais) . . ,, 53 



13. Shoulder-blades of Whales. (From Fischer) . ,, 53 



14. Fcetus of Beluga. (From O. Mitller) . . . . ,, 56 



15. Stomachs of various Cetacea. (From Jungklaus) ,, 60 



16. Series of lower jaws to illustrate gradual diminution of teeth. 



(From van Beneden and Gervais) . ... 70 



17. Embryo of Bahznoptera muscuhis, showing rudimentary teeth. 



(From Kiikenthal) . . . . . ,, 76 



18. Head of Bal&noptera, showing whalebone. (From a specimen 



in the Nat. Hist. Museum) . . ,, 83 



19. Skull of Bal<cna ajistralis, dorsal view. (From van Benedan 



and Gervais) . . . . . . 118 



20. Skull of BalcEnoptera sibbaldii, dorsal view. (P'rom van 



Beneden and Gervais) . . . . . 119 



