Plate XVI. 
Larval stages of Ichthyura incliisa and alhosigria. 
Fig. 1. Ichthyura inclusaf Stage I; la, side view. 
Fig. 2. Ichthyura inclusay Stage II j 2a, side view of third abdominal segment. 
Fig. 3. Ichthyura alhosigma, Stage Illlj 3a, third abdominal segment, dorsal view; 3b, the same, side view. 
Fig. 4. I. albosigma, Stage IV. 
Fig. 5. I. albosigma, Stage V (and last) ; 5a, side view. 
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