VARIETIES. 313 



harm by the body of the mother. We hope our correspondent 

 Rusticus will include a history of this singular creature among 

 his valuable " Observations on Blight." — Ed.] 



30. Larva of Cr(£SHS seiitentrionalis. — I have more than 

 once found this larva in abundance on the hazel, in the begin- 

 ning of July and the end of August. It is gregarious, and 

 remains most of the day at rest, on the margins of the leaves, 

 in the attitude represented in the drawing by my friend 

 Newman. Last July I observed some young hazels nearly 

 stripped of their leaves by these larvee, but apparently most of 

 them had changed to the pupa state, as scarcely any were to 

 be found on the few remaining leaves. Although the larva is 

 abundant at times with us, yet I have rarely found the imago. 

 The plate so well exhibits the form of this larva, that any 

 description of it would be superfluous. (See pi. 1. fig. 5.) 



Edward Doubleday. 



31. Metamorphosis of Aleyrodes. — Since Reaumur, no 

 entomologist seems to have met, in the larva or pupa state, with 

 Aleyrodes Proletella ; and the opinion that its metamorphosis 

 resembles that of the Lep'tdoptera has been so general, that 

 it is with much hesitation I venture a doubt of its correctness. 

 Having recently reai-ed it from the pupa which I found on 

 cabbage-leaves, I am disposed to think that it more resembles 

 the coarctate pupa of some Diptera ; but as I had not the 

 opportunity of paying sufficient attention at the time, I 

 merely throw out this hint in the hope that some more able 

 entomologist may take the pains to examine the larva and pupa 

 of this remarkable insect, which 1 have no doubt will be found 

 in abundance throughout the summer, under the leaves of the 

 rough-leafed vai'iety of the common cabbage. 



Edward Doubleday. 

 Epping, December, 1832. 



32. Larva of Lyda sylvatka, %c. — When my friend 

 Davis was at Blackheath, last summer, he found a nest of the 

 larvae of Lyda sylvaiica feeding in a web, on the leaves of 

 a pear-tree ; he kindly gave me specimens, one of which I 

 have drawn : it is remarkable in being entirely without the 

 abdominal legs (see pi. 1. fig. 4), Another yellow larva, with 



NO. III. VOL. I. s s 



