Bui. 273, U. S. Dept. of Agriculture. 



Plate I. 



Fig. 1.— First-Stage Larva Showing Two Kinds of Hairs. (From Burgess.) 



Fig. 2.—<i, Tubercle from First-Stage Larva Showing Hairs; I, Vesicular 

 Hairs; <; Acuminate Hairs. All Much Enlarged. 'Original.) 



GIPSY-MOTH CATERPILLAR SHOWING VESICULAR AND ACUMINATE HAIRS. 



