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Cidaria russata and immanata. — I send you tho following note, in the hope 

 that some account of the investigation of the earliei* stages of these species, on 

 which, during the past twelve months, I have bestowed as much pains as untoward 

 circumstances would permit, may not prove altogether unacceptable. 



To begin with russata. On August 11th, 1863, I captured a ? moth ; she at 

 once laid some eggs, from which the larvaa were hatched simultaneously on 23rd of 

 same month ; I fed them on sallow and strawberry, and they attained the length of 

 half-an-inch before hybernation : about ] 5tli February, 1864, they began to feed 

 again, and had all of them attained their full growth, and were spun up between 

 10th and 23rd April. During the latter month I also captured 4 or 5 larvae, and 

 they too were spun up by the 26th. The moths (about 15 in all) from both bred 

 and captured larvo9 emerged between May 5th and 18th. Meanwhile, on May 10th, 

 I received from Mr. Batty, of Sheffield, one full-fed larva, which he had found on 

 whortleberry ; this spun up at once, and the moth appeared May 27th. A few days 

 later, during the first week of June, I obtained 4 or 5 batches of eggs from captured 

 $ S; the larvEe from the first of these were hatched on June 11th, and the rest in 

 due order ; they fed up fast on sallow and strawberry ; the first began to spin on 

 July 15th ; the first moth appeared on August 5th, and the rest continued to emerge 

 till the first week in September ; I did not set out all of them, but there must have 

 been several dozens. 



Now for the dates of imnuinata. I captured a ? moth of the var. viarmorata, 

 August 12th, 1863 ; she at once laid eggs ; also in tho latter part of August, and 

 the first week of Septembei-, I received from Mr. Hodgkinson (who was then in 

 Westmoreland), and from Mr. Batty, of Shefiield, several batches of eggs laid by 

 $ s of the dark type (they kindly enclosed the moths for my inspection) ; some of 

 these eggs I kept for a time indoors, and some outdoors, but not a single larva 

 broke shell until March 5th, 1864, when the larvae of my marmorata began to make 

 their appearance at the rate of one or two a day. The eggs from Westmoreland 

 and Sheffield, having been deposited in chip boxes, could not so well be kept damp, 

 and had nearly all dried up ; most fortunately, however, in the first week of April, 

 a few larvae wjere hatched from them. The marmorata larvae fed away freely on 

 wild strawberry, and occasionally on sallow, and began some of them to spin up on 

 27th May (the day on which I bred my latest specimen of the spring moths of" 

 •russata), and by 11th June, all were in pupae ; the moths, to the number of nearly 

 50, emerged between June 13th and July 4th : the type immanata larvae fed up 

 more slowly, going into pupse from June 10th to about the same day in July, and 

 tho moths appearing from June 28th to quite the latter end of July, numbering 

 about a dozen in all. 



The above dates call for no special remark, except that (as is the case at times 

 when insects are reared in confinement) some of them are a little earlier than those 

 rightly assigned for these species ; but I may make one or two remarks about the 

 perfect insects : and first as to constancy of form and markings. It will have been 

 seen that both broods of rus.-iata were investigated, as well as both varieties of 

 immanata, these last too coming from parts of the country very distant from each 

 other ; yet in no instauce could there be any doubt but that the moths bred fully 

 possessed the distinctive chai-acters of their respective parents ; there was no con- 

 fusiun of species. ISlcxt ai to variation ol ct)lour. Whibt, as Mr. Doubleday has 



