THE CANADIAN ENTOMOLOGIST. 11 



ship between lucia and negleda in my paper first referred to, Ent., vii., 82, 

 and Mr. Scudder made the matter more probable by his relation of the 

 history of these two forms or species, Ent., viii., 64, considering it possible 

 that lucia was a boreal and colline form of violacea, but appearing a little 

 earlier in the season. I have undoubted lucia in company with violacea 

 from Anticosti ; in same way, both forms from Maine ; also from New 

 York, and lucia grades into violacea unquestionably. From Colorado I 

 have lucia, violacea and negleda. In the account given in But. N. A. oi negleda, 

 I find a statement which was not explainable at that time, but which the 

 observations of this year make clear, namely, that "in June, 1866, at 

 Coalburgh, negleda appeared in large numbers, while I scarcely saw a dozen 

 pseudargiolus, usually so abundant. In the following years (1 867-1 868) 

 negleda has again been rare in this district." Plainly enough, owing to 

 insufficient food for the larva; sprung from eggs of violacea, caused by an 

 unpropitious spring, the butterflies were reduced in size, and while I could 

 find few pseuda/gio/us, every where negleda had taken its place. Being one 

 and the same species, that is exactly what would occasionally take place, 

 and it is to abundant food on the other hand and unusually favorable lar- 

 val conditions that here and there to the northward a few typical pseudar- 

 giolus appear when all the others flying are negleda. Now after writing 

 these last lines, it occurred to me to look-up my journals for 1866. I find 

 therein that the season was late, the first examples of violacea being seen 

 April 1st, whereas in other years I had found them from 10th to 15th 

 March. On 4th April the mercury reached 90 and violacea is recorded 

 as abundant. Immediately after which followed cold and wet (always 

 disastrous to butterflies after extreme heat, which has caused them to 

 emerge from chrysalis prematurely), and this bad weather lasted through 

 April and most of May. Up to 10th June all butterflies are mentioned 

 as being very scarce (because the early brood had been more or less 

 destroyed by the cold). On 16th June, and again 28th June, I record 

 that not a pseudargiolus had so far been seen that year, but that all which 

 had appeared were negleda. How. two years after, I came to state that a 

 dozen pseudargiolus had been seen in 1866 I cannot now remember, but 

 probably I then concluded that the larger and paler examples of what I 

 first called negleda were properly small pseudargiolus. 



DESCRIPTION OF THE PREPARATORY STAGES OF L. PSEUDARGIOLUS. 



EGG — Diameter, .02 inch ; round, flat at base, flattened at top, the 



