Plate XXII. 



Larral slagi-s of Sijmmtrialu alhifrons. 



Fig. 1. Symmerisla alhifrons, Stage I; 1«, side view. 



Fig. 2. St/mmerista albifrons, Stage II; 2a, side view. 



Fig. 3. Symmensta albifrons, Stage III; 3ffl, side view. 



Fig. 4. Symmerista albifrons, Stage V (and last); 4a, side view. 



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