Figure 5><.—Balistapus undulatus: 



lateral view of spiny dorsal 



fin and its pterygial supports, 



composite based on several specimens, 



ca. 120-124 mm SL, western Pacific. 



basal pterygiophore 



r~ 3 fin I 



Figure 59.—Balistapus undulatus: 

 left, dorsal view of pterygial supports 



of spiny dorsal fin, with the spines 



removed; right, posterior view of first 



dorsal spine and anterior view of 



second dorsal spine to show their 



articular facets; composite based on 



several specimens, ca. 120-124 mm SL, 



western Pacific. 



Figure SO.—Balistapus undulatus: 



lateral view of caudal fin supporting structures, 



composite based on several specimens, 



ca. 120-124 mm SL, western Pacific. 



caudal vertebrae 



