Plate XV. 



Larval stages of Ichthiiura apiculis and var. astoria:. 



Fig. 1. Ichthijura apicalis (van), last stage; 1«, third abdominal segment, side view. 



Fig. 2. Ichthyttra apicaJis, var. astoria, Stage I : '2a, side view; 2ft, natural size; 2c, third abdominal segment, side view; 



2(?, end of body, dorsal view. 

 Fig. 3. The same. Stag© II; 3a, side view; 36, larva natural size; 3o. second thoracic segment; 3rf, second abdominal; 



3c, third abdominal segment; 3/, end of body with anal leg. J. Bridgham del. 



322 



