144 THE CANADIAN ENTOMOLOGIST. 



larva except in its first home. The excrement is soft, wet and green when 

 the insect has been feeding upon succulent tissues ; dry, granular and 

 coloured when the anthers have been eaten. 



After the petals have withered and the pod is developed, the larvae 

 may be found boring into the latter and feeding openly by day. It is, 

 however, much more difficult to find them at this time, possibly because 

 their number is depleted. 



Three moults are undergone before pupation, the caterpillar finally 

 attaining a length of 12-16 mm. The length of larval life varies consid- 

 erably, but all the insects bred were in chrysalis before the second of 



July. 



Pupation. — When fully grown the larva grows restless and refuses to 

 eat. For two or three days it will circle its prison time and again, 

 noticeably decreasing in size in the meantime. When it was noticed tliat 

 one desired to pupate it was transferred to a shallow glass-covered box 

 filled with sand, over which dry leaves and twigs had been liberally 

 sprinkled. One of the most interesting facts determined concerning this 

 species is that the larva constructs a rude cocoon of leaves or other debris, 

 fastened together with a considerable amount of silk. These "cocoons" 

 are less finished than those of many Hesperid?e, and remind one of 

 similar shelters constructed by Everes comyntas. Fig. 5 in the plate 

 shows one made of three leaves, and scarcely covering the chrysalis ; 

 fig. 5a, one of a single leaf and much silk; fig. 5b, one of parts of two 

 leaves and little silk; fig. 5c, the largest and firmest of all. This is 

 composed of six leaves or parts of leaves and a withered Vaccinium 

 flower, fastened by silk in five different places. This has been opened 

 and folded back along the line A-B. 



The chrysalis. — Figs. 11, 13, 15, 10 1, 107, 109, iio and 112 show 

 variation in the size and outline of the chrysalids. These are drawn 

 natural size by tracing the shadow cast under a point of brilliant light, 

 and are not symmetrical, because the chrysalis not being flat on the 

 ventral surface tips a little to one side or the other ; 13, no and 112 did 

 not yield imagoes ; 11 and 15 gave males ; 101, 107 and 109 gave females. 



Parasite. — A dipterous larva came out of No. jig on February 9th, 



1906, and hardened into a short cylindrical pupal case, rounded at both 



ends. On February 28th the fly emerged, and is evidently a Tachinid. 



I have referred it to the genus Exorista, but am not able to identify it 



further. 



(To be continued.) 



