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next segment of the body, and a similar shield on the last segment, 

 and the six true legs are black, and the mouth parts brown. The 

 larvae mature early in July and transform to pupae within the 



nest. If the nest be opened at this time, there 

 will be found in its interior large black masses 

 of the excrement of the larvae, and within these 

 are the cocoons containing the pupae. The in- 

 sects remain only a short time in the pupa state, 

 the moths emerging during July. When the 

 pupae are about to change to moths they work 

 their way out of the nest clinging to it only by 

 the hooks at the anal end of the body. And 

 here they transform, leaving the empty pupa 

 skins projecting from the nest as shown in the 

 figure. The moths vary in size, the wing ex- 

 panse of those we have bred 

 ranging from four-fifths of an 

 inch to nearly one and one-fifth 

 inches. The wings are bright 

 ochre yellow ; the front pair Fig. S.—Cacoen'a 

 marked with irregular brown- cerasivorana, 

 ish spots and numerous, trans- male - 

 verse bands of a pale leaden blue. These mark- 

 ings vary greatly in different specimens. There 

 are usually two brown spots, 

 more or less divided with 

 lead color, on the fore (cost- 

 al ) edge of the wing, and 

 three or more similar spots Fig. 9.— Cacoeciacer- 

 Fig. 7.— Nest of Ca- on the disc of the wings ; asivorana, female, 

 coecia cerasivorana. - n addition to these there are a number of 

 brown dots on the costal edge and on the disc. (Fig. 8 and 9.) 



We did not observe the eggs, neither have we been able to find 

 any published account of them. They are probably laid in a 

 cluster on a twig near the end of a branch. The gregarious habits 

 of the larvae indicate that the eggs are not scattered ; and as the 

 moths appear so early in the season it is probable that the species 

 winters in the egg state ; in which case the eggs cannot be laid on 

 the leaves, as then they would fall to the ground and the larvae 

 would not appear in colonies at the tips of the branches. 



