Plate XVI. 



Larval stages of Iclilhijura iiicliixa and nlbosif/na. 



Tig. 1. Ichthiiura inclusa, Stage I; la, side view. 



Fig. 2. Jchlhyitru iiictasa, Stage 11; 2o, side view of tliird abdominal segment. 



Fig. 3. Ichthyura alhosiyma. Stage Illf ; 3a, tliird abdominal segment, dorsal view; Sh, the same, side view. 

 Tig. 4. /. ulbusigma, Stage IV. 

 Fig. 5. I. albosigma, Stage V (and last) ; 5o, side view. 



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