28 



dealbana. At Glogau, on the 11th of May, 1851, on a young aspen, I caught a male 

 which thus early was somewhat injured, going to prove that the time of flight could 

 not extend far into the second half of the month, that consequently the indication of 

 'June' has not much probability, and, as all the allied species appear only once a 

 year, there is no reason to think there is a second brood of this. In the year 1852 I 

 procured, from two Coleopterists of this place, branches of aspen, in which were Sa- 

 peida larvae. On examination of the knots on the branches I noticed, in a defective 

 part, an empty pupa-case projecting from the wood, and it immediately occurred to 

 me that it might very likely belong to coroUana. I therefore next examined other 

 injured branches, and when I saw some larva-excrement hanging out of one I became 

 certain that the larva of coroUana lived in the wood of aspens. Only one of these 

 branches furnished me with a moth, a male, which came out in the morning of the 

 11th of May. The branch was, underneath a twig, somewhat knotty and decayed. 

 I had cut into it, in April, just down to the cavity wherein the pupa lay, in a web of 

 powdered wood, wiih the head upwards, very lively, and still quite yellow. I fiistened 

 the pieces of the branch together again, and looked at it from time to time, and thus 

 observed how the pupa became coloured. As it had lain with its head within the wood, 

 I feared that, as in consequence of my cutting into the wood it had fallen out, I had 

 replaced it in an unfavorable position, but this fortunately did not appear to have 

 been the case. I saw, on the lith of May, the i)upa had worked itself out through 

 a decayed part hitherto unobserved by me, from which it was almost entirely 

 suspended; it became thus all but exposed; still it could make use of the spines 

 of the abdomen, by means of which it had doubtless burst through the place 

 of its exit, which had been prepared beforehand by the larva. At first I could 

 not find the moth, and on shaking the box it did not fly ofl". At last I saw it 

 sitting on a small bit of the wood, with its wings in a convex, roof-shaped position. 

 In consequence of my having disturbed it, in my endeavours to put it into a small 

 glass, it became very lively in the sunshine. A second fine example of coroUana, 

 which came out with the Saperda, I afterwards received from Herr Capt. Quedenfeld, 

 one of the above-mentioned Coleopterists. 



" It appears to me, from the foregoing details, that this moth is not so scarce as 

 hitherto supposed, and that it may be obtained by breeding. For this purpose both old 

 and young lower branches of aspens should be examined in the winter and spring, at- 

 tention being directed to those having the knots of Saperda larva, as both these 

 insects appear to stand in a certain sort of relation to each other. If the branches be 

 put into water there will be no difficulty in the breeding; indeed the moth will be ob- 

 tained earlier by the warmth of a room than it could be taken at large." 



On Entomological difficulties. 



Mr. Stainton read a paper entitled " On the difliculties experienced by En- 

 tomologists, as exemplified by recent experience with the Larvae of the Genus 



Elachista." 



Introduction of Domhyx Cynthia into Malta and Italy. 



The Secretary, adverting to the mention of the subject at the March and June 

 meetings of this Society, read, from the 'Journal of the Society of Arts,' July 14th, 

 an account, transmitted by Col. Sir Wm. lleid, Governor of Malta, to the Duke of 



