Figure 2. — Development of the larva of wahoo: A. larva, 2.8 mm. long; B. larva, 3.4 mm. long; C. larva, 4.4 mm. 



long; D. larva, 5.8 mm. long. 



increases gradually to about seven or eight in 

 the 8.4-mm. larva (fig. 3B). No melanophores 

 appear on the conical cartilaginous projection 

 at the tip of the jaw in larvae shorter than 5.8 



mm., but some are present at lengths above 6.8 

 mm. In larvae over 10.7 mm., melanophores on 

 the lower jaw are found only on the cartilag- 

 inous projection (fig. 3A-D) . 



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U.S. FISH AND WILDLIFE SERVICE 



