82 



Conservation Departmeivt 



Table 5. — Station Record of Young Fishes Taken by Shearwater, and 

 Navette — {Concluded) 



Family Coregonidae ! 



Lcucichthys artedi Le Sueur — Lake herring; tullibee ; clseo \ 



Record of Capture. — No young herring were taken by the j 

 survey during the past summer. By the time that our collecting 

 trips started tlie herring had grown to a stage where tliey wei'c 



a})le to successfully escape the trawls used. Consequently it was \ 



iHMU'ssary to rely uj^on i-ather scanty hatchery material for a study | 



of this species. Ai'r.-in'jj'cments liave })een made to obtain a very \ 

 ('0)ii|)le1e series of eggs and young next ye;ir. so 1ha1 the following 



shoil jiccoiiiM of a tVw sl.-igcs will ser\-e only as |)i-eliiirniai-y data , 

 toward a eoiiiplele (IcNclopniciit al liislory lo he niach' baler. 



Description. — /'>'//</. Diaiuelei- ot* hatcliery specimens examined ] 



varying fi-om 12.0 mm. to 2..") mm., mostly 2.25 mm. The earliest i 



stage obtained measuring 2.25 mm., diameter of yolk 1.8 mm., with j 



a colorless early embryo reaching halfway around the yolk. Very ; 



