DISTRIBUTION AND MIGRATION 



347 



Figure igo. Wilsori's 

 Hourglass Dolphin, 

 Lagenorhynchus 

 wilsoni Lillie, as 

 seen on 14th 

 April ig4y at 

 48 59' S, 6^'36' E. 

 Drawing by H. van 

 der Lee. {From Bier- 

 man and Slijper, 

 1948.) 



Narwhals, though the former have been observed off Cape Cod, and 

 one specimen of the latter was washed ashore in what was then the 

 Zuider Zee. The Pigmy Right Whale {Caperea [Neobalaena) marginata), 

 dolphins of the genus Cephalorhynchus, which have a striking black 

 and white coloration (Fig. 189), and some species of the genus 

 Lagenorhyjichus (Fig. 190) which are also white and black, are all 

 restricted to the cold south, where they have been seen over wide areas 

 between the northern limit of drifting ice and the latitude of Cape Town. 

 Exclusively North Pacific species are Lagenorhynchus obliquidens, and 

 representatives of the genus Phocaena, related to our Common Porpoise. 

 Another North Pacific Cetacean is the Californian Grey Whale which 



^4f 



Figure igi. Beaked Whale, Mesoplodon minis True, a species that has only rarely been 

 observed in the Atlantic. {Kellogg, 1940.) 



