LE ATHERWOOD ET AL,: DISTRIBUTION AND MOVEMENTS OF GRAMPUS GRISEUS 



is clearly sporadic and has concentrated on coastal 

 regions near population centers. 



The areas of coverage of the most important 

 programs considered in this report are sum- 

 marized in Figure 3. (The expanded area cover- 

 age of the SWFC tunaboat-observer program is 

 shown in Figure 2). 



RESULTS 



Strandings and Collections 



As nearly as we can determine, 22 strandings 

 and/or collections of specimens of G. griseus have 

 been recorded in the northeastern Pacific since 

 about 1872 (Figure 4). 



1. (Published). In the late 19th century, 

 probably in 1872, although the exact date is 

 undeterminable, Charles M. Scammon obtained 

 two lower jaws from Monterey, Calif (Scammon 

 1874). Dall (1874) used these two lower jaws as 

 the basis for his description of G. sternsii, later 

 rejected as a species by True (1889) because it 

 was indistinguishable from G. griseus (G. Cuvier 

 1812). One lower jaw and two teeth were depos- 

 ited in the U.S. National Museum (USNM 

 13021), though True could not make his mea- 

 surements agree with Ball's and tentatively said 

 that it was "apparently neither the No. 1 nor the 

 No. 2 of Mr. Ball's description" (True 1889). The 

 whereabouts of the second mandible or, if True's 



180°w 170°w 160°w 150°W 140^; 130°w 120°w 11.0°w 1Q0°W 9,0°w 8p°W 



-^ ' T^ ' ^ f^^^. 



70 N 



60"N 



40"N 



r - 20"n 



FIGURE 3. The eastern North Pacific north of lat. 15° N, showing areas surveyed by m£gor marine mammal survey programs ( 1958-75). 



See text for details of documentation. 



955 



