PLATE IV. 
Fig. 1.—Physeter catodon, Linn. Thirty-six bulls and one female stranded at Perkins Island, Tasmania, 
in February, 1911. Photograph by Spurling & Son, Tasmania. 
Fic. 2.—Balaenoptera acutorostrata, Lacépéde. Head of calf 10 feet long. Dunedin, N.Z. Photograph 
by Prof. W. B. Benham, F.R.S. 
Fie. 3.—Mouth of the same. Photograph by Prof. W. B. Benham, F.R.S. 
Fic. 4.—Megaptera nodosa, Bonn. Foetus, slightly enlarged. Bay of Islands, N.Z. Photograph by 
Dr. W. G. Ridewood. 
