58 THE REPORT OF THE No. 19 



The eggs were deposited on the underside of a leaf, and were described as follows : 



Diam. i mm., finely pitted, of a pale delicate green, the batch covered with white down from 

 the abdomen of the 9 but those laid after the moth reached me had very little of the down 

 about them. 



Riley described the eggs as being of a bright golden-yellow colour, having, on account of 

 the pitted surface, the appearance under a magnifying lens of a beautiful golden thimble, but 

 this is erroneous, as I have had and examined many clusters of these eggs, and all were of a 

 pale, delicate green. Occasionally a few yellow eggs will be found in an egg cluster, but these 

 appear to be bad onts, as I have never known them to hatch. The parent of this first brood, 

 which I called No. 1, was a little rubbed, but so far as I could see was immaculate. It is shown 

 on the plate as fig . 1. (See frontispiece plate). 



The larvfe hatched on llth-13th August, giving an egg period of about 12 days in the 

 latitude of Montreal. 



These larvaj were carried by me to Rockland and Portland, Me , and back to Montreal, 

 through the White Mountains, and were thus never out of the Textor region. They were fed 

 on American Elm. For comparison, I also secured a part of a batch of Textor larvjB from a nest 

 on a birch tree in Mount Royal Park, but having been entrusted to a friend while I was at the 

 seaside they were, on account of their commonness, somewhat neglected, and only about half a 

 dozen survived. When the larvae of both forms were mature, I immediately saw that they 

 diflfered strikingly from each other. The larvae of Cunea vary considerably among themselvc .s, 

 but only within the limits of what may be called the Cnnea form, never to my knowledge, and 

 I have bred not far short of a thousand of them in various broods, varying in the direction of 

 Textor. 



I he distinction between these larvte may be broadly stated as follows : 



Cunea has the lateral broad band, light in color, not much spi'inkled, and the warts on it 

 yellowish, the upper row occasionally tinged with orange, and the hairs chiefly blackish gray. 

 Textor has the lateral band heavily sprinkled with black dots, giving it a bluith appearance, the 

 warts upon it orange-red, and the hairs chiefly foxy red brown. 



These larvie thus differ much more than the larvae of many allied species whose distinctness 

 is never called in question. Probably owing to the latitude in which they were raised this tirst 

 brood matured slowly, and as the season advanced it was diflicult to secure any green elm 

 leaves, and to keep them fresh for any length of time. Some of this brood seemed to be affected 

 by some intestinal trouble, the pellets of frass remaining held to the anus by a reddish tilameiit. 

 One was observed to have no less than four such pellets in a chain attached to the anus. When 

 elm was no longer to be had I changed the food to apple, and was able to secure this in a gi-een 

 state even after the tirst frosts. 



Those larvie which spun up among the leaves were placed in a box with a zinc pan in the 

 bottom, covered with a layer of crushed quartzite kept moist, the box being covered by a 

 pane of glass, but those which spun up attached to the floor and sides of the breeding cage were 

 not disturbed. 



The specimens kept in the damp box began emerging on 18th March, 1900, and continued 

 to do so up till the 12th April, when I left on an Easter trip to New York, Philadelphia, and 

 Washington. Up to that date none had emerged in the breeding cage, and I feared that they 

 must have become dried up, but on my return home on the 21st, I found that a number had 

 emerged, and they continued emerging up to the 16th May, being thus just one month 

 later than tho.se kept in a moist atmosphere. 



-\' out seventy five specimens in all were reared, though some were crippled or otherwise 

 damage . nd not worth preserving, and of these only four females were absolutely immaculate, 

 that is, al it 5 per cent, of the whole brood, or about 10 per cent, of the females. Many of 

 the latter sex were quite heavily marked, more so than the average male of ordinary broods, 



