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<br />b. 48 ...................... C. ardens <br /> <br />112 (111). Caudal fm length (total length minus <br />standard length) <br />a. 15-17% SL . . . . . . . . . . . . C. platyrhynchus <br />b. 18-20% SL . . . . . . . . . . . . . . . . . . . .. 113 <br />c. 21-22% SL . . . . . . . . . . . . . . . . . C. ardens <br /> <br />113 (112). Length from anterior margin of snout <br />to insertion of dorsal fm <br />a. 62-63% SL . . . . . . . .. . . . C. p/atyrhynchus <br />b. 64-65% SL . . . . . . . . . . . . . . . . . C. ardens <br />C. platyrhynchus <br />c. 66-67% SL . . . . . . . . . . . . . . . . . C. ardens <br /> <br />114 (103). Pigment over ventral to ventro-lateral <br />surfaces of gill covers (opercula) <br />a. absent or present but not in a distinct <br />oblique row of 3 or more meIanophores <br />near or along ventral margin of one or <br />both preopercles (Figs. 47, 75) ...... 117 <br />b. present in a distinct oblique row of 3 or <br />more melanophores near or along ven- <br />tral margin of one or both preopercles <br />(Fig. 74) ............. C. platyrhynchus <br /> <br />115 (99). Pigment over ventral to ventro-Iateral <br />surfaces of gill covers (opercula) <br />a. absent or present but not in a distinct <br />oblique row of 3 or more me1anophores <br />near or along ventral margin of one or <br />both preopercles (Figs. 32, 47, 75) ... 116 <br />b. present in a distinct oblique row of 3 or <br />more melanophores near or along ven- <br />tral margin of one or both preopercles <br />(Figs. 31, 74) ................... 123 <br /> <br />116 (115). Pigment on ventral surface of heart <br />region <br />a. absent (Fig. 47) ................. 117 <br />b. present (Figs. 32, 46, 74) .......... 120 <br /> <br />117 (114,116). Pigment in pectoral fm <br />a. absent or present but very light with ::510 <br />melanophores (Fig. 47) ........... 118 <br />b. present but more prominent with ~11 <br />melanophores (Fig. 75) .. C. platyrhynchus <br /> <br />118 (117). Number of myomeres to posterior <br />margin of vent <br />a. 32-34................ C. platyrhynchus <br /> <br />b. 35-37 . . . . . . . . . . . . . . . . . . . . . . . .. 119 <br />c. 38-40 .................. C.discobo/us <br /> <br />119 (118). Total number of myomeres <br />a. 43-46 . . . . . . . . . . . . . . . . C. p/atyrhynchus <br />b. 48-49 . . . . . . . . . . . . . . . . . . C. discobo/us <br />C. p/atyrhynchus <br />c. 48-49.................. C.discobolus <br /> <br />120 (116). Pigment in pectoral fm <br />a. absent or present but very light with ::510 <br />melanophores (Fig. 47) ........... 121 <br />b. present but more prominent with ~11 <br />melanophores (Fig. 75) ........... 124 <br /> <br />121 (120). Number of myomeres to posterior <br />margin of vent <br />a. 32-33................ C. platyrhynchus <br /> <br />b.34 ......................... 125 <br />c. 35-37......................... 122 <br />d. 38-40 .. .. . .. . .. .. .. .. .. .. .. ... 133 <br /> <br />122 (121). Total number of myomeres <br />a. 43-47 . . . . . . . . . . . . . . . . . C. commersoni <br />C. p/atyrhynchus <br />b. 47-48 . . . . . . . . . . . . . . . . . C. commersoni <br />C. discobo/us <br />C. platyrhynchus <br />c. 47-48................. C. commersoni <br />C. discobo/us <br /> <br />123 (99,106,115). Pigment on ventral surface of <br />heart region <br />a. absent ............... C. platyrhynchus <br />b. present (F'1g5. 32, 74, 75) .......... 124 <br /> <br />124 (120,123). Number of myomeres to poster- <br />ior margin of vent <br />a. 32-33 . . . . . . . . . . . . . . . . C. platyrhynchus <br /> <br />b. 34-37 . . . . . . . . . . . . . . . . . . . . . . . ., 125 <br />c. 38-40................. C. commersoni <br /> <br />125 (121,124). Total number of myomeres <br /> <br />a. 43-47......................... 126 <br />b. 48-49 . . . . . . . . . . . . . . . . . C. commersoni <br /> <br />126 (125). Pigment in dorsal fm <br />a. along fm rays with very few, if any, <br />meIanophores on membrane between <br />rays (Fig. 75) .. . . . . . . . . . . . . . . . ., 127 <br />b. abundant both along and between rays <br />(Fig. 33) .............. C. commersoni <br /> <br />127 (126). Pigment in anal fm <br />a. absent or present but very light with <br />only a few (:$5) melanophores ...... 128 <br />b. present but more prominent with many <br />(~) melanophores . . . . . . . C. commersoni <br /> <br />128 (127). Caudal fm length (total length minus <br />standard length) <br />a. 15% SL . . . . . . . . . . . . . . C. platyrhynchus <br />b. 16-20% SL ............ C. commersoni <br />C. p/atyrhynchus <br />c. 121-126% SL . . . . . . . . . . . C. commersoni <br /> <br />129 (99,100). Pigment over ventral to ventro- <br />lateral surfaces of gill covers <br />(opercula) <br />a. absent or present but not in a distinct <br />oblique row of 3 or more melanophores <br />near or along ventral margin of one or <br />both preopercles (Figs. 32, 46) ...... 130 <br />b. present in a distinct oblique row of 3 or <br />more melanophores near or along ven- <br />tral margin of one or both preopercles <br />(Fig. 31) .............. C. commersoni <br /> <br />130 (129). Pigment on ventral surface of heart <br />region <br /> <br />80 <br />