GENERAL GROWTH PATTERNS 



Head length and body depth show a uniform 

 rate of increase with standard length throughout 

 the size range of my sample (figs. 8-9) . 



Upper jaw length shows a uniform rate of in- 

 crease with standard length in larvae longer than 

 about 4 mm. SL, but smaller larvae have a faster 

 rate of increase (fig. 10) . 



Lower jaw length increases at a uniform rate 

 with standard lengtli in larvae between about 4 

 and 13 mm. SL; but larvae smaller than about 

 4 mm. SL and longer than 13 mm. SL have a 

 faster rate of increase (fig. 11) . 



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Snout length increases only slightly in speci- 

 mens up to about 2.7 mm. SL; between about 2.7 

 and 4 mm. SL snout length increases at its fastest 

 rate ; and larvae larger than about 4 mm. SL have 

 a uniform but slower rate of increase with stand- 

 ard length (fig. 12). 



Eye diameter increases at a uniform rate with 

 standard length in larvae longer than about 3.5 

 mm. SL; the rate is faster in smaller larvae (fig. 

 13). Eye diameter as a percentage of head length 

 decreases throughout the size range in my sample 

 (fig. 14) ; the fastest decrease is between head 

 lengths of about 0.5 and 1.5 mm. (1.8 to about 4 

 mm. SL). 



/ 



/ 



/ 



Figure 4. — Larva of Cyclopsetta flmbriata, about 3.0 mm. SL. Note sphenotic and preopercular spination, elongate dorsal 

 and pelvic fin rays, and pigmentatiom. Pectoral fin is omitted to show swim bladder, gut, and pigmentation on dorsal 

 portion of swim bladder and gut. 



LARVAL BOTHID FLATFISH AND SPOTFIN FLOUNDER 



269 



