MULLIDAE OF THE "WESTERN NORTH ATLANTIC 



413 



or, iit some size over npproxiniately fil mm. (the 

 largest dip netted), it may be lost. 



The first indication of metamorphosis is loss of 

 the overall dark pigmentation and formation of 

 three black blotches along the lateral line. This 

 is followed by an elevation of both the back and 

 head (also see P. mnrulatu'<. Sexual Dimor- 

 phism). The abrupt increase in body depth is 

 indicated on the graph (fig. 12). 



In the inset in figure 12, the dip-netted speci- 



mens (long and slender, and silvery, or dark 

 brown) are indicated separately from the trans- 

 forming and transformed specimens cauglit either 

 by bottom trawl or witli the aid of rotenone. The 

 transforming 4.'5.0-mni., di])-netted specimen men- 

 tioned above is omitted. Between 40 and 60 mm., 

 the specimens that were still pelagic showed a 

 downward inflection of the depth slope, whereas 

 an upward inflection is demonstrated for the meta- 

 morphosing forms. 



Figure 6. — Upper. 



.59.0-mm. nietauiorphose<l PseiKfupeiieiis inaculatus (CAS R'M 9477). Lower. 58.9 iiiui. pelagic 

 Pscudiipeneus maculatus. Dip netted by Gi// personnel. (BLBG) 



Figure 7. — Pseudvpeneux marulatux, 18..^ mm. Dip nette<l b.v CriU personnel. ( BLBG) 



643096 O— 62- 



