76 THE CANADIAN ENTOMOLOGIST. 



again. With many of our eastern species (virgo, phalerata, etc.j the 

 pairing generally takes less than an hour. 



A sound fertilized female lives about seven days, disposing of about a 

 thousand eggs at inteivals, in loosely connected clusters or clumps of 

 more than a hundred eggs each, rarely in patches ; some liberated them- 

 selves of their whole stock of eggs in two large clumps ; others again, as 

 is often the case with virgo a.nd phaleraia, resting on the under side of a 

 leaf and bending the abdomen downward, drop the eggs singly, occasion- 

 ally changing the place ; the eggs are dispersed considerably on account 

 of their springiness. 



The eggs oi pr,oxima are in appearance like those of almost all of our 

 eastern species; rather bright, pale yellowish, more conical than rounded 

 (blunt cones) and measure at base about 0.7 mm. Magnified they show 

 essentially a like reticulation; the same is the case with the eggs of y4r^//a 

 incorrupta, and as Mr. Gibson (Can. Ent., Vol. XXXII., p. 321) describes 

 the eggs of Arctia americana, Harris, also as pale yellowish and semi- 

 ovoid, it is interesting to compare the eggs oi Arctia caja, L., from Europe, 

 which are decidedly rounded and apple green; while those oi Ardia caja, 

 from beyond the Ural Mts., are described as pearly white (Berliner Ent. 

 Zeitschr., Vol. XLIX., Aug., p. 36). 



The mature larva forms a voluminous resting place, with little spinning, 

 between moss or rubbish on the ground, changing after several days to a 

 dark brown or pale pinkish-brown pupa, which soon becomes covered 

 with bluish bloom ; pupte remaining without this bloom will not develop. 

 The pupal rest extends from fifteen to twenty days; the females appearing 

 first, mostly in the morning. 



The wide range of proxima still seems to be limited to certain 

 altitudes. In more southern regions the habitat of the moth may be 

 extended to far higher elevations than, for instance, at Phoenix, Ariz., but 

 it seems to avoid continuous severe cold. 



All the females obtained from Dr. Kunze and taken at Phoenix at an 

 elevation of about iioo ft. were Arctia proxima, Guerin, and with every 

 generation derived from these there were always nearly one third aut/io/ea, 

 Bdv., as well as all intermediate forms to the one with marginal row and 

 discal dots of hind wings. At Prescott, Ariz., with an elevation of about 

 5400 it., proxima seems to be replaced by Arctia incorrupta. Hy. Edw. 



