Van Waerebeek Variation in skull morphology of Lagenorhynchus obscurus 



767 



u 



c 

 J 



-< 

 a 



4.2 

 3.8 



3.4 

 3 

 2.6 

 2.2 

 1.8 F 

 1.4 



i i 



8.6 fr- 



e.2 

 -e.2 



-8.6 



-1 



-1.4 

 -1.8 

 -2.2 

 -2.6 

 -3 

 -3.4 

 -3.8 

 -4.2 F 



4 4 



J_ 



-4.8 



"3.4 -2 -8.6 6.8 



Discriminant function 1 (score) 



2.2 



3.6 



Figure 3 



Scores of discriminant functions I and II based on 21 cranial characters for adult skulls of Lagenorhynchus obscurus from Chile (II, New 

 Zealand (21, southwestern Africa (3), and Peru (4). Group centroids are indicated by a black dot. Corresponding statistics are presented 

 in Table 7. 



□ 



U 



c 



3 



L 

 U 

 * 



H 



D 



4.4 



4 

 3.6 

 3.2 F 

 2.8 F- 

 2.4 E 



2 

 1.6 

 1.2 

 8.8 

 8.4 

 8 



-e.4 



-8.8 

 -1.2 

 -1.6 

 -2 

 -2.4 



4 * A 4* «*■ * 



4* * 4* * 



" » . 



-4.7 



-3.7 



-2.7 



-1.7 



-9.7 



8.3 



1.3 



2.3 



3.3 



Discriminant function 1 (icon) 



Figure 4 



Scores of discriminant functions I and II based on the six most discriminating cranial characters (CBL, PROW, TFW, LTRL, TW, and 

 TCUR) for adult skulls of Lagenorhynchus obscurus from Chile (1), New Zealand (2), southwestern Africa (3), Peru (4). Group centroids 

 are indicated by a black dot. Corresponding statistics are presented in Table 8. 



