AHLSTROM ET AL.: PLEURONECTIFORMES 



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Fig. 355. Larvae and transforming specimens of Pleuronectidae. (A) Samaris crislatm, 6.4 mm, from Pertseva-Ostroumova, 1965; (B) 5. 



crislatus. 8.7 mm, ibid; (C) Samariscus sp., ca. 24.0 mm; (D) Poecilopsetta hawaiiensis. ca. 29.0 mm; (E) Pelolretis llavilalus. 4.3 mm, redrawn 

 from Rapson, 1940. C and D from P. Struhsakcr. unpublished. 



an exception is C. abbreviatus which has a relatively large egg. 

 Notochord flexion and transformation occur at larger sizes in 

 symphurines compared with cynoglossines and some Symphii- 

 rus have an extended larval stage that exceeds 30 mm in length 



in having a large deep head and tapering body, but the jaws are 

 relatively smaller in cynoglossids and the body is more attenuate 

 (Fig. 357). The gut mass protrudes beyond the ventral profile 

 and in some species it trails posteriad. In S. laclea a conical 



(Table 178). Cynoglossid larvae are similar to those of soleids structure is attached to the trailing gut coil (Kyle, 1913). Cy- 



