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ACALEPH^E. 



ACALEPHJE 



1. Aurelia aurita. Small marginal tentacles ; 8 sense tentacles ; 4 sub-genital pits and 4 groups 

 of gastral filaments in the radii of four of the sense tentacles; 4 oral arms in the radii of the other 

 four sense tentacles; the pseudo-velum; 16 radiating canals, those in the radii (radial) of the 8 sense 

 tentacles branch, the others (adradial) do not; circular canal. 



2. Examine a sense tentacle first in situ, and then in watch glass with low power to see protective 

 folds of umbrella; otoliths. 



