YOUNG JACK CREVALLES 



447 



40 



^30 



X 



C3 



> 

 < 



20 — 



o 



CO 



< 



tr 

 o 

 o 



co io 

 rr 



T 1 1 1 



• crysos 

 a dent ex 



~\ i i r 



t 1 1 — r 



n i i r 



"i 1 1 r 



"i 1 1 r 



J I I L 



— 20 . 



J U 



J I I L 



J L 



J I I L 



30 



X 



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Q. 

 CO 



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co 

 tr 

 o 



10 Q 

 Q 



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 x 



100 150 200 



STANDARD LENGTH IN MM. 



250 



300 



Figure 25. — Caranx crysos and C. dentex: Relation of length of first dorsal soft-ray and of third dorsal spine to standard 



length. 



the upper line intersects the lower line at approxi- 

 mately 22 mm., indicating that an inflection 

 occurs at about that size and that a slower eye 

 growth rate prevails above that size. The pro- 

 portional rates of increase for the two variates 

 are 0.11-mm. (below 22 mm.) and 0.07-mm. 

 (above 22 mm.) increase in eye diameter per 

 1.0-mm. increase in standard length. The spread 

 of the coordinates of specimens larger than 145 

 mm. around the extension of the calculated re- 



gression line is variable, but suggests that eye 

 diameter growth may continue at the same 

 proportional rate. 



Snout. — The regression of snout length on 

 standard length is shown in figure 28 and table 3. 

 A line fitted to this regression for specimens from 

 5.4 to 145 mm. standard length shows a propor- 

 tional rate of increase for the two variates within 

 this size range (0.08-mm. increase in snout length 

 per 1.0-mm. increase in standard length). The 



