FISHERY BULLETIN: VOL. 73, NO. 3 



GLOSSOHYAL 



GILL RAK 



BASIBRANCHIAL 



HYPOBRANCHIAL 



CERATOBRANCHIAL 



EPIBRANCHIAL 



UPPER PHARYNGEALS 



PHARYNGOBRANCHIAL 



Figure 49.-Branchial arch of Cyhiosarda elegans. Dorsal view of the gill arches with the dorsal halves folded back to show their ventral 



aspect. Epidermis removed from right hand side to reveal underlying bones. 



a 



f 



Figure 50.-Left lateral view of the three basibranchial bones in six species of Sardini. a. Cyhiosarda elegans, New South Wales, 355 mm 

 FL. b. Orcynopsis unicolor, Tunisia, 593 mm FL. c. Sarda sarda, Azores, 418 mm FL. d. Sarda australis, New South Wales, 407 mm FL. 

 e. Gymnosarda unicolor, Truk Islands, 772 mm FL. f. Allothunnus fallai, Tasmania, 778 mm FL. a-e drawn twice as large as d-f. 



570 



