FISHERY BULLETIN: VOL. 77. NO I 



T.'\BLE 5. — Measurements (millimeters I of larvae and juveniles o(Sebasles cramen from waters off Oregon. Specimens above dashed 



line are undergoing notochord flexion. 



'Usually third or fourth in lan/ae. fifth or sixth in juveniles 



^Usually midfin 



^The second spine 



••Not formed 



'Transforming. 



'Pelagic juvenile 



'Benthic juvenile 



The tympanic spine, sometimes bifid, appears 

 on specimens >25 mm. This spine forms at the 

 anterior edge of a foramen of the cephalic lateral 

 line system. The pterotic spine is present in flexion 

 larvae and disappears in juveniles >50 mm. The 

 supracleithral spine develops in larvae of ~11 mm 

 and the superior posttemporal spine can be seen on 



specimens >18 mm. These latter three spines per- 

 sist in juveniles, however, the inferior posttem- 

 poral becomes reduced in larger juveniles. A 

 cleithral spine develops dorsal to the pectoral fin 

 base immediately posterior to the opercular mar- 

 gin on juveniles >30 mm. 



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