THE DOLPHINS. 105 



thickness of blubber, about an inch ; its color is quite red, and the oil retained 

 the same hue after extraction, and appeared watery. The jaws were furnished with 

 sharp, straight, conical teeth. 



These animals are found in large schools, and move over the surface of the 

 sea in the same manner as the Qlobioceiyhalus. 



SECTIOJf XII.— THE PUG-ET SOUKD GRAMPUS. 



In Port Townsend Bay, Washington Territory, June 19th, 1868, a great number 

 of small whales, evidently a species of grampus, were seen gamboling, in squads of 

 six or eight individuals, whose movements were similar to those of the Blackfish 

 {Globiocephalus) . They were likewise of the same jet black color; but the dorsal 

 fin was narrower, very pointed, and placed about one -fourth of the animal's length 

 from its flukes. So far as our observations go, the Paget Sound Grampuses are 

 not numerous, and they are but rarely seen about the inland waters of Washington 

 Territory, which is the only place where we have met with them. 



SECTION XIIL— THB'SAN DIEGO BAY GRAMPUS. 



Of this individual Cetacean, our observations have been confined exclusively to 

 those frequenting the Bay of San Diego, where the animals are seen passing into 

 and out of the estuaries connecting with the main lagoon. The distinguishing 

 mark peculiar to this species, is its broad, triangular, and prominent dorsal fin, 

 which is placed about midway between its extremities, and is slightly falcated. 

 Nothing is definitely known about the animal's dimensions. As seen when undu- 

 lating over the water, it exhibits the ordinary movements of the Cowfish. Its 

 length may be approximated at twelve or fifteen feet ; otherwise its proportions of 

 body are nearly the same as those of the Orca ater. Its color is black above, with 

 more or less white beneath. It feeds on fish, for which purpose it ascends the 

 estuaries. Repeated attempts have been made to secure one of the creatures, and 

 during the chase they have been approached so near as to allow good views of 

 their proportions upon the surf\ice of the water ; but their shyness and rapid 

 movements have thus far precluded every effort to capture them. 



Marine Mammals.— H. 



