FOOD OF POST-LARVAL FISH. 449 
Peridiniales and diatoms occasionally occur, generally contained in diffuse 
masses, which may be from the alimentary canal of the Crustacea eaten. 
They apparently form an unimportant part of the diet. Tntinnopsis 
ventricosa 1s the only Infusorian, Peridinaum sp. and Prorocentrum micans 
the only Peridinians and Paralia sulcata, Navicula sp. and Pleurosigma 
Fic. 6.—Post-larval Arnoglossus laterna, 12 mm. long. 
sp. occur among the diatoms, especially chains of Paralia sulcata. Small 
bodies, possibly spores, also occur. Ea 
Apparently the smallest and the largest specimens feed on the same 
kind of food, as no difference was found. Also in May and June the 
months when the hauls were taken, no difference is found. Although 
so few specimens of Solea vulgaris and S. lascaris were examined, the 
evidence seems to point to their taking the same kind of food as S. varie- 
gata. 
NEW SERIES. VOL. xI. NO. 4. May, 1918. 
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