384 



nosmn on the following-named trees : Apricot, prune, peach, cherry, 

 English laurel {Prunus lauro-cerasus), pear, apple, English waluut, birch 

 [Betula sp.), and ash {Fraxinus sp.); and Professor Kiley writes me 

 that it has also been found on grape vines at Berkeley, in this State- 

 Some of the trees which I examined were very thickly infested with 

 these scales, and as no insect is known to attack them, they may yet 

 develop into a very serious pest. A single experiment that I made last 

 season, however, would seem to indicate that on dormant deciduous 

 trees these scales, all of which at this season of the year are in the larva 

 stage, could be readily destroyed by means of a wash or spray composed 

 of the following ingredients: Eesiu, 30 pounds; caustic soda (about 70 

 per cent, strong), 9 pounds; fish' oil, 4^ pints, and water sufficient to 

 make 100 gallons. On the 12th of May I sprayed some of this solution 

 on a few branches of a prune tree which were thickly infested with 

 these scales, and this proved fatal to all of them, besides destroying the 

 greater number of their eggs. This wash, however, could only be used 

 while the trees are dormant, and should never be used when the young 

 buds are bursting forth or at any time when the trees are in leaf. 



NOTES ON THE HABITS AND EARLIER STAGES OF CRYPTOPHASA 

 UNIPUNCTATA, DON., IN AUSTRALIA. 



By Henry Edwards, Xew York City. 



One of the most Siiugular instances of the change of habits in a species 

 of Lepidoptera that has come under my notice is to be found in that 



Fig. 30. — Oryptophasa unipunctata : a, larva ; b, lateral view of enlarged segments ; c, pupa ; d, anal 

 segment or cremaster; e, adult — all natural size except b and d, which are enlarged (original). 



of the insect referred to in the present article. As far back as 1858 I 

 was fully acquainted with the species, and raised a considerable num- 



