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PACIFIC SCIENCE, Vol. XXI, July 1967 
Fig. 10. Gymnothorax petelli, some of the gill arch muscles of the left side, ventral view, showing sub- 
divisions (attractores interbranchiales and sphincteres branchiales) of the subpharyngealis. IAl-2, Attractores 
intermediates 1-3; LAl-4, attractores laterales 1-4; MAl-3, attractores mediates 1-3; OAl-2, attractores 
obliqui 1-2; SRl-4, sphincteres branchiales 1-4. 
