THE CANADIAN ENTOMOLOGIST. l!S5 



able to induce her to walk on to them every thirty seconds. Six times she 

 returned to the gauze immediately ; at the seventh trial she oviposited 

 (2.12) on I', corymbosum (calyx). The same course was followed again, 

 and resulted in seven returns to the gauze, and an egg (2.16) on vacilUms 

 (corolla) ; then seven returns and another egg on vacillans (calyx). The 

 butterfly then refused twenty successive invitations to oviposit, and upon 

 being left undisturbed took up a position on the netting, concealing the 

 primary wings as far as possible between the secondaries, which also hid 

 the abdomen. This appeared to signify that the performance was ended, 

 and, as my duties called me away, I made note of the location of each of 

 the five eggs, and brought my observation to a close. 



The growing plant oviposited upon between 11.40 a.m. and 

 1.40 p.m. was searched (as was also the box and netting), with the result 

 that seven eggs, besides the one first noticed, were found as follows : 

 terminal leaf-bud of longer stem, 4 (2 at base of inner leaf, on lower 

 surface ; 2 close together at apex of outer leaf, on upper surface); terminal 

 flower-bud of shorter stem, 2 (at base of cluster, on scales) ; next lower 

 flower-bud, same stem, t (same position). 



Two days later another confined female laid an unfertilized egg on 

 the calyx of a vacillans flower, and this may be assumed to be the location 

 usually selected when the buds are sufficiently open, otherwise the eggs 

 are placed on the scales of flower-buds, and possibly also on those of 

 leaf-buds. 



Number of Eggs. — Edwards obtained fifteen eggs; my female yielded 

 thirteen, and the butterfly dissected in 1905 contained fourteen. 



Tlie Egg. — In my discussion of /iicisalia irus I stated* that the 

 " only inihlished account of the early stages of that species, except Sciuiiler's 

 description and figures of the egg" (and, I neglected io add, his description 

 of the larva at birth, the figure of its head, and the coloured illustration of 

 the chrysalis), was to be found in the work of Boisduval and Leconte. 

 As I have pointed out, Scudder borrowed Edwards's descriptions of the 

 other larval instars and of the pupa of Henrici. and applied them to irus 

 under the impression that they were one and the same species. He did 

 not quote Edwards's description of the egg, but gave his own, based 

 undoubtedly ujion personal examination, I There would be nothing 



*C.\NADi.\N ENTOMor.oc.isT, \'ol. XXXVIII, \o. 6 (June, 1906), p. 181. 



I Dr. Soiulder says that lie lias "in two instances known eggs to be laid by 

 females ^ />//.?> shut up in cliip boxes." Presumably one or more of these 

 I'uiiiislied the jjasis ol' the description aiu! figures. 



