Sullivan. — The Winter Flounder 135 



culty referred to above is undoubtedly one of feeding. 

 In the fishes up to three weeks the only food found in the 



gut is made up of diatoms. A little later the smaller 

 Crustacea are found, and in the fishes that have completed 

 metamorphosis Isopoda were invariably present. That in 

 some cases at least the older fry eat the young is made 

 plain by the fact that those in stage 3 were seen eating 

 the younger fry. 



RATE OF GROWTH 



Measure me kts for Lot 1 



The length and greatest depth are given in millimeters. Both Lot 1 

 and Lot 2 were fixed in Zenker's fluid and preserved in alcohol. The 

 measurements are for preserved specimens: 



May 4. May 11 May 18 May 25 June 5 



4.3x0.50 4.7x1.25 5.4x1.46 5.0x1.66 5.0x1.75 



5.0 x 0.63 5.0 x 1.25 5.5 x 1.25 5.0 x 1.90 5.5 x 1.90 



5.0x0.75 5.2x1.00 5.5x1.60 5.3x2.00 5.5x2.10 



5.2x0.80 5.2x1.66 5.6x1.33 5.4x1.70 6.1x2.00 



5.3x0.75 5.5x0.80 5.8x1.50 5.7x1.75 6.1x2.10 



5.5x0.75 5.5x1.70 5.8x1.66 5.7x1.85 6.2x2.10 



5.5x0.83 5.6x1.66 5.9x1.48 5.8x1.66 6.2x2.10 



5.6x0.88 5.7x1.75 6.0x1.25 6.0x2.00 6.4x2.10 



6.0x1.10 5.8x1.41 6.0x1.33 6.4x2.12 6.5x2.33 



6.1x1.20 6.3x2.53 6.0x2.10 6.5x2.20 7.0x2.40 



Measurements for Lot 2 



May 3 May 4 May 5 May 6 May 7 



4.3x0.60 4.3x0.63 4.5x0.63 4.8x0.50 4.3x0.66 



4.3x0.60 4.4x0.64 4.7x0.60 4.8x0.60 4.5x0.50 



4.4x0.60 4.6x0.65 4.7x0.60 4.9x0.66 4.5x0.63 



4.4x0.66 4.7x0.63 4.9x0.62 5.0x0.60 4.8x0.60 



4.5x0.54 4.8x0.57 4.9x0.62 5.0x0.63 5.0x0.64 



4.5x0.63 4.9x0.60 5.0x0.60 5.0x0.66 5.0x0.69 



4.5x0.64 4.9x0.63 5.0x0.60 5.0x0.68 5.2x0.70 



4.8x0.60 5.0x0.63 5.0x0.66 5.0x0.74 5.2x0.75 



4.8x0.60 5.0x0.68 5.1x0.68 5.2x0.68 5.3x0.75 



4.9x0.66 5.2x0.66 5.7x0.75 5.3x0.68 5.6x0.90 



May 8 May 9 May 10 May 11 May 12 



4.5x0.63 4.8x0.66 4.5x0.60 4.6x0.80 4.5x0.69 



5.0x0.69 4.9x0.60 5.0x0.72 4.7x0.68 4.9x0.75 



5.0x0.78 5.1x0.70 5.0x0.75 4.9x0.84 4.9x0.80 



5.1x0.66 5.3x0.75 5.0x0.78 5.0x0.75 5.0x0.87 



5.3x0.76 5.3x0.90 5.1x0.70 5.0x0.81 5.0x1.00 



5.5 x 0.85 5.5 x 0.72 5.2 x 0.87 5.0 x 0.85 5.0 x 1.10 

 5.5x0.85 5.5x0.90 5.4x0.97 5.0x0.86 5.1x1.10 

 5.5x0.90 5.8x1.00 5.4x1.10 5.0x0.90 5.2x1.00 



5.6 x 1.00 5.9 x 1.00 5.1 x 0.90 5.1 x 0.90 5.2 x 1.30 

 6.0x1.10 6.0x1.20 5.1x0.92 5.1x0.92 5.6x1.20 



