PLATE VII. 



SAMIA CECROPIA. 



Larval stages. 



Fig. 1. — Third stage. Joutel del. Two color varieties. Some larvae in this stage are yellow, some bright orange 



with all sorts of intermediates, but most are green. 

 Fig. 2. — Fourth stage. Joutel del. "No variation among 200 larvae." 

 Fig. 3. — Fifth (last) stage. Joutel del. "Most larvae have the yellow tubercles with two black spines; sometimes 



three spines are present ( fig. 3o) and occasionally one spine; the three forms often on same larva, and none 



entirely 1-spined or 3-spined." 

 Fig. 4. — Fourth stage; yellowish-green form. Bridgham del. "The amount of black spot on the pillar of the tubercle 



is variable." A, face; B. tubercle of eleventh segment; C, tubercle of second and third segment; 



D, tubercle of dorsum; E, tubercle of side row; F, tubercle of twelfth segment. 

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