107 



3. Die arion-Kaupeu können jedoch nicht von den 

 Ameisen gefüttert werden, sondern nur von 

 dem vegetabilischen Abfall (?) etc. im Neste 

 leben. 



4. Warum ist es so schwierig, die arion-Raupeu 

 zu finden ? Die Falter sind im nördlichen Corn- 

 wallis so zahlreich, dass man annehmen muss, 

 auch die Raupen seien häufig. Nach Frohawks 

 Darstellung soll es aber nicht der Fall sein. 

 Besitzt die ariou-Raupe etwa eine besondere 

 Fähigkeit, sich zu verbergen? 



3. X. 1906. 



Notes on Silk-producing Bombyces. 



North American Species. 



Telea polyphemus. — The moths of tbis species 

 emerged in 1903, from the 23rd of May to the 25th 

 of June; in 1904 they emerged from the 18th of 

 May, more than a moutb earlier, in consequence of 

 the uuusually warm weather we have had tbis seasou. 

 However iu 1903, three pairings of j)0?2/^/«e»nts were 

 obtaiued, and the rearing of the worms was very suc- 

 cessful in the open air on small oak trees in my garden; 

 in 1904 on the contrary, no pairings could be obtained. 

 This species, as it has been previously stated, pairing 

 with the greatest difficulty iu captivity. The cocoons 

 received this year were for the most part very small, 

 and the result, owing to tbese two causes, was a 

 total failure. A fact came to my notice, which, I 

 think, deserves to be recorded; a cocoon of the 

 rearing of 1903, which had beeu overlooked and left 

 all the Winter, spring and summer, in the garden, 

 produced a male moth, which emerged on the 4th 

 August, forty-six days alter the emergence of the 

 last American poujphemus, in the same year 1904, 

 warm as the season had been. This fact tends to 

 show that if the cocoons were left in the open air, 

 it would be impossible to rear the species so late 

 in the seäson, and, therefore, that it could not be 

 acelimatised in England, even under the most favou- 

 rable conditions. 



Actias luna. — With a very large quantity of 

 cocoons, only one pairing was obtained, which was 

 on the early morning of the 1 4th of June. Most of 

 the eggs from that Single pairing were bad, and the 

 larvK which hatched on the Ist July died withia a 

 few days. The cocoons which had been sent to me 

 were very small, and had the appearance of being 

 he product of worms carelessly bred and perhaps 



kept Short of good fresh foliage. The moths emerged 

 from the 27th of April to the 13th of June. On the 

 Ist of August I received twenty-three fiue luna co- 

 coons, of the second brood, from Brooklyn ; thirteen 

 moths had emerged during the voyage, and two of 

 the cocoons had died. From the eight remaining 

 cocoons, excepting one, all the moths were large and 

 fine, and three pairings were obtained, one male 

 haviug pairod twice, a very diiferent result from the 

 one I had with the first cocoons sent. The moths 

 began to emerge on the Ist of August, the same 

 day the box of cocoons had arrived, and they con- 

 tinued to emerge up to the 6th of the same month. 

 The first pairing took place on the 3rd, the second 

 on the 5th, and the third on the 7th August. The 

 first larvic hatched on the 13th and 14th of August, 

 they commenced spinning their cocoons from the 

 28th of September and continued tili the 18th of 

 October, when they all were in cocoons. The larvse 

 bred in captivity in the house, thrived remarkably 

 well on walnut leaves, and there was no case of 

 fatality. The cocoons obtained are very fine, and 

 much larger than the first I had received from 

 America. to he continued. 



Briefkasten der Redaktion. 



Herrn W. N. iu Z. Es sind natürlich keine 

 Prospekte mehr da. 



Herrn F. W. iu P. Nachricht unterwegs; war- 

 ten Sie noch mehrere Tage. 



Herrn A. G. in B. Es ist nicht nötig, sich 

 Setzlinge von P. maritima kommen zu lassen: die 

 Raupen fressen auch P. sylvestris, sogar iu Spanien 

 selbst. 



-A.rxz;oigroxx- 



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 Max Bartel, Oranienburg b. Berlin, Waldstr. 54. 



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