EXPLANATION OF PLATES. 



N.B. The dark back ground to the skull represents the shape of the 

 head of the animal. 



PLATE I. 



FAMILIES. 



1. Balaena Balaenidae. 



2. Catodon Catodontidae. 



3. Delphinus Delphinids. 



4. Halicore Manatidse. 



PLATE IL 



1. Balaena mysticetus, 12. 



2. Balaenoptera rostrata, 32. 



3. Catodon macrocephalus, 49. 



4. Physeter Tursio, 56, from Sibbald. 



PLATE III. 



DELPHINID^E. 



1. Hyperoodon latifrons, 69. 



2. Ziphius Sowerbiensis, 71. 



3* Delphinorhynchus micropterus, 73. 



PLATE IV. 



DELPHINID^E. 



1. Beluga Kingii, 77. 



2. Neomeris phocaenoides, 80. 



3. Phocaena communis, 81. 



PLATE V. 



DELPHINID^E. 



1. Grampus Cuvieri, 83. 



2. Globiocephalus Svineval, 87. 



3. Orca Capensis, 95. 



