NOTES ON SOME OF THE GENUS EUPITHECIA. 121 



July. The larva of E. tamorisciata^ Frey, Guenee, p. 332, 

 seems somewhat to resemble this species. 



Occurrence o/'Eup. arceuthata, Frey, in 

 Great Britain. 

 Durinn; the three years that I have been resident in 

 Buckinixhamshire I have taken the larva of this insect on 

 wild juniper on our chalk hills. When I first found it, I 

 took it to be the larva of Enp. HelveticatUy Bdv. ; but when 

 the moths appeared thefollowincr spring, they were so different 

 in size, colour and general appearance, that I could not 

 believe them to be that species. Having an opportunity 

 during the past season of sending some Eupithecice to 

 Professor Zeiler of Meseritz, I enclosed a specimen or two 

 of my Buckinghamsliire insect with the rest. M. Zeiler at 

 once informed me that it was Eup. arceuthata, Frey, an 

 insect which he was in the habit of breeding freely in his 

 neighbourhood. He also kindly sent me some fine bred 

 Continental specimens, which precisely tallied with my own. 

 M. Zeiler, however, added, that he considered this species 

 and Helceticata to be identical, the latter being a northern 

 variety of the former. He admitted, however, that he was 

 not acquainted with the oeconomy of HeheticatUy and had 

 had no means of comparing the respective larvae. Messrs. 

 Doubleday and Bond were inclined to hold the same opinion, 

 but they also had not seen and compared the larvae. I 

 determined, therefore, if possible, to try and set the matter at 

 rest. I succeeded in May last in getting impregnated eggs 

 from my Buckinghamshire-bred Arceuihala. These I dis- 

 tributed among various friends : Mr. Hellins, Mr. Greene 

 and myself succeeded in rearing a few. Through the kind- 

 ness of Mr. Wilson, of Edinburgh, I procured some living 

 larvae of Eup. Heheticata from the Pentland Hills. T 



