82 



FISHERY BULLETIN OF THE FISH AND WILDLIFE SERVICE 



hauls yielded a much larger percentage of young forms from the surface layers than 

 did day hauls. Possibly the same condition might have occurred if night collections 

 had been made in Chesapeake Bay (table 2). 



Table 1.- — Seasonal distribution of young fishes in the plankton, Chesapeake Bay, 1929-80. Nearly all 

 fishes were taken in larval or early postlarval stages 



Table 2. — The surface and subsurface distribution of planktonic fishes in Chesapeake Bay, expressed 

 as the percentage of hauls in which the various species occurred 



[108 surface and 140 subsurface hauls were made from May to October, 1929, and 111 surface and 168 subsurface hauls from April to 

 December, 1930, omitting June. No fishes were obtained in 24 surface hauls and 47 subsurface hauls made in January and 

 March. 1931] 



Species 



Achirus fasciatus 



Anchoviella mitchilli 



Ancyclopsetta sp 



Astroscopus gultatus 



Bairdiella chrysura 



Brevoortia tyrannus 



Centroprutes slriatus 



Conger conger 



Cynoscion regalis 



Etropus sp 



Oobicsox strumosus 



Gobiosoma sp 



Hippocampus hudsonius- 



Hypsoblemius bentz 



Lophius piscatorius 



Percent of 

 hauls, 1929 



Sur- 

 face 



Sub- 

 sur- 

 face 



4(1 



Percent of 

 hauls, 1930 



Sur- 

 face 



Sub- 

 sur- 

 face 



Species 



Lophopsetta maculata 



Menidia menidia 



Menticirrhus americanus. 

 Alicrogobius thalassinus. . 



Micropogon undulatus 



Paralichthys sp 



Peprilus alepidotus 



Pomatomus saltatrix 



Poronotus triacanthus 



Prionotus sp 



Pissola marginata 



Symphurus plagiusa 



Syngnalhus floridae _. 



Syricte* fuscus _ . . 



Sphoeroides maculatvs 



Tautoga onitis. 



Percent of 

 hauls, 1929 



Sur- 

 face 



Sub- 

 sur- 

 face 



Percent of 

 hauls, 1930 



Sur- 



Sub- 

 sur- 

 face 



22 

 4 

 B 

 2 



12 



2 

 1 

 10 

 4 

 2 



1 



11 

 8 



