450 FISHERY BULLETIN OF THE FISH AND WILDLIFE SERVICE 



251 1 1 1 1 1 1 1 1 1 - 



20 



15 — 



I- 



o 



LlI 



_l 



H 

 3 

 O 



10 



"i 1 1 1 1 1 1 1 r 



i — i — i — i — r 



• crysos 

 a dent ex 



5 — 



i i i i 



J I I L 



I I I I 



50 



J I I L 



100 150 200 



STANDARD LENGTH IN MM 



250 



J I L 



20 



10 



< 



300 



Figure 28. — Caranx crysos and C. dcmex: Relation of snout length and of eye diameter to standard length. 



from 70 to 200 mm. standard length: 1.75 to 2.1 

 (fig. 30). The relationship is highly variable, but 

 the ratio shows a trend of increase up to about 50 

 or 60 mm. and a decrease above 200 mm. The 

 ratio of 1.7 given by Nichols (1938b: 1) for a 22- 

 mm. standard length specimen is within the range 



I have established. However, the majority of the 

 ratios he gives for 103- to 311-mm. specimens are 

 too low to fall within the perimeters established 

 by my specimens. This may be due to variations 

 in our methods. The values of 1.5 to 1.8 given by 

 Nichols (1939: 5, 6) for specimens 12 mm. and 



