Plate XXXI. 
Larval stages of Heterocampa guitivitta. 
Fig. 1. H. guttivittay Stage I; la, side viewj W, protlioracic antlers j lb, lb', antlers on first abdominal segment; 
Ic, Ic', antlers on second to seventh abdominal segments; Id, antlers on eighth abdominal segment. 
Fig. 2. Stage II; 2a, side view. 
Fig. 3. H. guttivitta, end of Stage II, 3a, side view. 
Fig. 4, 4a. Ji. guttivHia, Stage III. 
Fig. 5, 5rt. if, guUivitta, Stage IV. 
Fig. 6, Ga. if. guttiviltaj end of Stage IV. 
Fig. 7, 7a. H. guitivitta, Stage V. Bridgham del. 
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