YOUNG JACK CREVALLES 



445 



Table 4. — Caranx crysos: Correlation of the numbers of 

 dorsal and anal soft-rays of 231 specimens 



[The upper number in each block is the count obtained for that combination 

 and the number in parentheses below is the approximate percentage of 

 that count in the total sample] 



DORSAL SOFT-RAYS 



Caudal. — 9 + 8 principal rays; 9 or 8 + 8 or 9 

 secondary rays. The principal rays are all present 

 and segmentation has begun at 5.4 mm. standard 

 length (fig. 17). The secondary rays are all 



present at 8.5 mm., but not at 7.5 mm. Branch- 

 ing begins at about 10 mm. (fig. 20), and is pro- 

 nounced at about 15 mm. (fig. 21). Forking of 

 the tail is represented by a slight indentation at 

 5.4 mm. (fig. 17) and is pronounced by about 8 

 mm. (fig. 19). 



The urostyle is visible in preserved specimens 

 to about 9 mm. (figs. 17 to 19). 



Pectoral— 1-19 to 23. The full complement of 

 rays is present at 8.5 mm. standard length (fig. 19). 

 Branching has begun by 25 mm. The distal end 

 of the fin is rounded from 5.4 to about 35 mm., 

 above which it becomes pointed and falcation 

 begins (figs. 17 to 23). Falcation is pronounced 

 by 100 mm. 



The regression of pectoral length on standard 



Figure 22. — Caranx crysos juvenile. 29.1 mm. standard length (Gill 4, Reg. 61). 



Figure 23. — Caranx crysos juvenile, 82 mm. standard length (Gill 3, Reg. 62). 

 48928G O— 59 3 



