CHAPTER IX. 
THE DOLPIIOS. 
In addition to the whalebone whales, and the Cachalot, which have been de- 
scribed in the preceding pages as frequenting the North -western Coast of North 
America, many species of Dolphins are also found. Those coming under our ob- 
servation are known as the Blackfish (Ghbiocephalus Scammonii), the Killer (Orca), 
the Whitefish (Beluga), the Bay Porpoise (Phoccena vomerina), the Striped or Com- 
mon Porpoise (Lagenorhynchus obliquidens), Baird's Dolphin (Delphinus Bairdii), the 
Right Whale Porpoise (Leucorhamphus horealis), the Cowfish (Tursiops GiUii), the 
White-headed or Mottled Grampus (Grampus Stearnsii), the Bottle -nosed Grampus, 
the Panama Grampus, the Puget Sound Grampus, the San Diego Bay Grampus, the 
Square -headed Grampus, the Brown -sided Dolphin of Santa Barbara Channel, and 
the Narwhal (Monodon monoceros). All these species are covered with a coating 
of fat, or blubber, varying in thickness from one -half of one inch to four inches. 
SECTION I. -THE BLACKFISH. 
Globiocephalus Scammonii, Cope. (Plate xvi.) 
Blackfish are generally found wherever Sperm Whales resort, but in many in- 
stances they congregate in much larger numbers, and range nearer the coast, than 
the regular feeding -grounds of the latter. Although subsisting almost entirely upon 
the same kind of food — the "squid," or octopus — still, at times, when schools of 
them visit bays or lagoons, they prey upon the small fish swarming in those shal- 
low waters. In Magdalena Bay we have seen them in moderate numbers, appearing 
as much at home miles from sea as the Common Porpoise or the Cowfish. They 
collect in schools, from ten or twenty up to hundreds, and when going along upon 
the surface of the sea, there is less of the rising and falling movement than with 
the Porpoise, and their spoutings, before "going clown," are irregular, both in num- 
ber and time between respirations. If the animal is moving quickly, much of the 
head and body is exposed. Whalemen call this going "eye out." In low latitudes, 
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