HEWETT : SPILOSOMA LUBRICIPEDA AND ITS VARIETIES. 357 
Excursion a Vile d’Heligoland refers to some English authority for 
his statement, but he gives no reference to this in the original.’ 
Mr. Cordeaux adds, ‘the variety is undoubtedly an immigrant 
to Heligoland, so there is every probability of its occasional 
Occurrence on the east coast.’ The following is a translation 
of the Baron’s reply to my enquiries for definite information 
on the occurrence of the variety radiafa on the east coast of 
England :— 
‘Liege, 7th October, 1894. My dear Sir,—I write you from the 
country, although I always give my address at Litge, but I shall be 
in town in eight or ten days, and will then look over my collection, 
and write you a few notes if I find anything that will be useful for 
you with regard to the variety radiata of Arctia lubricipeda, but I am 
not sure that I possess any other positive information of my own 
observation except that which I have given in my Excursion to the 
Isle of Heligoland in 1882. There I saw at Herr Gitke’s, the 
ornithologist, numerous examples which had been reared from eggs ; 
there were amongst them several varieties intermediate between 
radiata and the type. As to Holland, I am convinced that the 
observation of the country is positive, but I don’t remember who 
was the Dutch entomologist who told me—it could be ascertained. 
As to the east coast of England, I don’t remember where I obtained 
the information. In Belgium and Holland there has been found for 
some months melanic examples of Amphidasis betularia, but of 
a black less intense than in Scotland.’ 
In a further letter dated Nov. roth, 1894, the Baron says :— 
‘Unfortunately I have nothing to add to that which I have written 
you with regard to the variety radiata (zatima) of Arctia lubricipeda. 
I find on looking through my collection that I possess only two 
examples, which came from Heligoland. In excursions to this 
island I have seen a box containing numerous examples taken by 
Herr Gatke, and I quoted the information given by Dr. Staudinger, 
who said that this variety has been observed in England and in 
Holland. It does not occur in Belgium.’ The remainder of the 
Baron’s letter contains interesting remarks on the variation of 
A. fuliginosa in Belgium and Spain, and of Amphidasis betularia 
near Brussels. 
Messrs. Porritt and Tugwell have reared two broods (or at any 
rate a partial second brood) of var. vadiafa in one season, and this 
fact is thought by some entomologists evidence sufficient to warrant 
their refusing to believe in the genuineness of vadia/a as a British 
form. Personally I do not attach much importance to var. radiata 
being occasionally double brooded, as it seems to me to be merely 
Dec, 
—_—— 
1894. 
