102 
Variation in Aurelia Aurita 
Perradial 1.1.1. 
Interradial 1.1.1. 
Three specimens with three genital sacs and three oral arms. 
Seven. Tentaculocysts. {Forty-seven specimens.) 
Perradial 0.1.1.1. 
Interradial 1.1.1.1. 
Thirty specimens with one perradial tentaculocyst absent. 
Perradial 1.1.1.1. 
Interradial 0.1.1.1. 
Fourteen specimens with one interradial tentaculocyst absent. 
When a perradial or an interradial tentaculocyst is absent the branched radial 
canal is usuall}' absent and in its place is a simple unbranched canal. 
Perradial 1.1.1. 1.2.1. 
Interradial 1.2.1. 1.1.1. 
Three specimens with three genital sacs and three oral arms. 
Nine Tentaculocysts. (Seventy-five specimens.) 
Perradial 2.1.1.1. 
Interradial 1.1.1.1. 
Sixty-three specimens have the extra tentaculocyst perradially situated. 
In the place of a single branched perradial canal there are two perradial 
branched canals usually occupying about the same space as a normal single 
branched canal. 
In two specimens the increase of tentaculocysts is due to twinning. 
There is one normal branched canal with two tentaculocysts very close together, 
just separated by a few mai-ginal tentacles. 
Perradial 2.0.2.1. 
Interradial 1.1.1.1. 
One specimen with two extra opposite perradial tentaculocysts and one 
perradial tentaculocyst and bi'anched canal absent. 
Perradial 2.1.1.1. 2.1.1.1. 
Interradial 2.1.1.0. 2.1.0.1. 
Three specimens with an extra perradial tentaculocyst, and an extra interradial 
in one quadrant, but one absent in the adjacent or opposite quadi'ant. 
Perradial 1.1.1.1. 
Interradial 2.1.1.1. 
Five specimens have an extra interradial tentaculocyst. 
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