162 THE entomologist's record. 



2. ECLEPENS. 



"Yverdon, July 9th, 1907. 

 "I saw no Apatma iris or Limenitis populi at Eclepens to-day, and 

 shall not return for them until next week. I got the four usual 

 Theclas, and over the tunnel, I believe, two Lycaena euphemus (a queer 

 place for them), and four of the pearly Parnamus a polio someone spoke 

 about last year. Their spots and colours are really very fine." 



3. Notes on the Season 1907. 



"Clarens, December -ith, 1907. 



"As to butterflies, there is really very little to write about this 

 year. I never had so bad a season, and fear that its effects will not be 

 quickly remedied. This, however, will be quite interesting to note in 

 1908. For instance, Erebia aethiojis, generally so common at Charpigny 

 in autumn, was scarcely there at all, and there were not many 

 E/iinephile tit/ioniis. Except a few fairly dark 'Swallow-tails,' I found 

 nothing to catch. I told you, I think, of the Liiuenitis populi caught 

 there on June 20th and 24th. It is grievous to say all that line of 

 firs on which they used to sit are now down, and quite half the firs in 

 my wood are gone too — cut down on account of the Bostrych.* By a 

 new order we have to burn the bark of all such trees as well as their 

 branches. 



"I have been making out a detailed list of the Apaturids, with 

 the number of their dark aberrations, which I took at Eclepens in 

 the last three years. I quite thought there was an interesting point 

 about it, in the decrease of dark abs., culminating in none this season. 

 However, in counting the eight transitional abs. taken in 1906, as I 

 am doing, in the total of fifteen, there is not much in it ; although it 

 IS curious that I should not certainly have seen one dark ab. this year, 

 for although I netted only 28 in all quite 70 must have been observed. 

 Var, clytie was not rare, although I only took one. The proportion of 

 Apotura iris to Apattira ilia I have rather to guess at, and of their abs. 

 too. Also, I have a third ab. of dytie, which is not given below in 

 the following list : — 



1905. Six days at Eclepens and Chavornay (one hour on July 7th, 



getting eight), June 29th-July 8th. 

 Iris. ab. ilia. ab. ch/tic. ab. Types, abs. lirce. populi. 

 65 10 51 8 21 1 or 2. 156 19 1 1 



1906. Six days at Eclepens. June 3rd-July 10th. 



42 8 38 6 9 1 103 15 8 7 



1907. Three days at Eclepens. July 9th-12th. 

 4 9 1 14 



Upper and lower roads. From Yverdon to Yvonand, two 

 days. July 10th-13th. 

 12 2 14 



16 11 1 28 



You see I count clytie as a type. I only caught one 2 Apaturid — 

 Apatura ilia. It is only fair to say the five days on which I caught 

 these Apaturids this year were very cool, with north wind, although 



* Disease amongst firs, caused by a parasite underneath the bark. — L.M.F. 



