YOUNG JACK CREVALLES 



513 



reported the inner 3 to 5 gill rakers on the upper 

 limb to be rather abruptly shorter or tuberclelike, 

 and 2 or 3 tubercles present on the lower limb. 

 This illustrates that the number of rudimentary 

 gill rakers at the origins of both limbs increases 

 with an increase in body length. 



Nichols (1937a: 59) used the number of lower- 

 limb gill rakers exclusive of rudiments to separate 

 a small number of specimens of C. h. hippos of the 

 Atlantic and C. h. caninus of the Pacific for sizes 

 over 100 mm. In view of the association of the 

 number of rudimentary gill rakers and body size, 

 this separation may be incomplete. Meek and 

 Hildebrand (1925: 351) found Pacific specimens 

 of the species to average a slightly larger number 

 of gill rakers than Atlantic specimens, but they 

 also omitted rudimentary gill rakers from the 

 counts. 



Table 22. — Caranx hippos: Correlation of the numbers of 

 lower-limb to upper-limb gill rakers of 105 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] 



LOWER-LIMB OILL RAKERS 



Scutes. — Range of the mean number of scutes 

 in fish measuring approximately 100 to 430 mm. 

 standard length: about 26 to 35 (fig. 92). Gins- 

 burg (1952: 93) gave a range of 24 to 39 scutes 



200 



50 



T 



-\ — r 



—r 



-i — i — i — r 



-i 1 1 r- 



i — i — i — i — | — i — i — i — i — | — i — i — i — i — | — r 



• BODY DEPTH AT PELVIC 

 a FIRST DORSAL SOFT-RAY LENGTH 

 « THIRD DORSAL SPINE LENGTH 

 o EYE DIAMETER 



„vi- 



«f* 



& 



*«* 



^a' &a 



THIRD JBDS- 

 EYE 



x * 



J i i i i I i i i i L 



200 



300 400 500 



STANDARD LENGTH IN MM, 



600 



700 



Figure 90. — Caranx hippos: Relation of body depth at pelvic, of length of first dorsal soft-ray, of length of third dorsal 

 spine, and of eye diameter to standard length, showing calculated regression lines (solid lines) for specimens smaller 

 than 300 mm. standard length and coordinates of and estimated regression lines (dashed lines) fitted to specimens 

 from 377 to 830 mm. standard length. 



489286 O— 59 



