LIST OF ILLUSTRATIONS 



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Fig. 1. Variation of color markings of Scatophagus argus (Linnaeus) — 37 



2. Rostral variation with age of Forcipiger longirostris (Broussonet). 47 



3. Variation of color markings of Chaetodon meyeri Schneider 61 



4. Variation of color markings of Chaetodon meyeri Schneider 62 



5. Chaetodon ornatissimus Cuvier. Young 63 



6. Variation of color markings of Chaetodon adiergastos Seale 100 



7. Microcanthus strigatus Cuvier. Young 144 



8. Variations in color markings of Holoeanthus diacanthus (Bod- 



daert) 170 



9. Holacanthus nicobariensis (Schneider). Uppermost left figure. 



All others Holacanthus semicirculatus 186 



lO.' Variation of color markings of Paracanthurus theuthis (Lace- 



pede) 206 



11. Hepatus philippinus (Herre) 215 



12. Variation of color markings of Hepatus lineatus (Linnaeus) 218 



13. Hepatus maculiceps Ahl 242 



14. Hepatus leucosternon (Bennett) 245 



15. Hepatus nubilus, new species 254 



16. Rostral variation with age of Naso unicornis (ForskM) 265 



17. Rostral variation with age of Naso brevirostris (Valenciennes)-. 269 



18. Rostral variation with age of Naso annulatus (Quoj^ and Gai- 



mard 271 



19. Rostral variation with age of Naso tuberosus Lacepede 274 



20. Rostral variation with age of Naso eoume (Lesson) 277 



21. Rostral variation with age of Naso hexacanthus (Bleeker) 281 



22. Naso vomer (Klunzinger). Adult 283 



23. Rostral variation with age of Naso tapeinosoma (Bleeker) 284 



24. Rostral variation with age of Naso thynnoides (Valenciennes) __ 285 



25. Siganus punctatissimus, new species 298 



XI 



