EXPLANATION OF PLATE LL 



Fic. 1. — Anisota senatorlii, heail and lour trunk !?firnifnts^, .stage III; a, tliinl tlmraciv dorsil tulicn-li-. 



Fig. 2. — Anisota stif/mn, second thoraeie horn. stat;e II, with tliinl dorsal thoracic tubercle; larva 7(1 nun. in length; 



also the same, stage III, with two view.s of third thoracic dorsal tuliercle; an<l V, an aberrant, 



shorter, stouter horn. 

 Fig. 2a. — Anisota stirjma, c, right thoracic horn, deformed, short, liut of the same thickness as its mate; c, tubercle 



(It (snpraspiracular), .stage IV? a, third dor.sal; h, abnormal second dor.sal tubercle of a larva 12 mm. 



long. 

 Fig. 26. — Anisota slit/ma, end of body, stage III. 

 Fig. 2c. — Anisota stigma, end of body, stage IV. 

 Fig. 3. — Anisota senatoria, head and five trunk segments, stage I. 

 Fig. 3a. — Anisota senatoria, head and four trunk segments, stage II. 



Fig. 36. — Anisota senatoria, prothoracic and second dorsal horn of stage III, and second thoracic horn of stage V. 

 Fig. 3c. — Anisota senatoria, liead and four trunk segments, stage IV. 



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