310 THE ENTOMOLOGIST. 



Disenfen, in the Province of Odalen. This bog has been worked 

 by several British entomologists, and its fauna recorded. I 

 could not find accommodation at Sseterstoen, where my pre- 

 decessors had stayed, but I discovered a fair inn at Aarnes, the 

 next station to Sseterstoen on the Christiania side, and a con- 

 venient train night and morning to convey me to my hunting- 

 ground. 



Being favoured with good sun on June 4th and oth, I found 

 plenty of butterflies. (Eneis jutta was in great numbers and 

 fine condition ; the males one found at rest on the pine-trunks 

 just on the edge of the bog, flying wildly therefrom when 

 approached; females, less in number, were mostly disturbed 

 from the ground. An hour or two amongst this species sufficed 

 to obtain all I required. In the two days I managed to acquire 

 half a score fine examples of Hesperia centaurece ; they frequented 

 the edge of the bog, in clearings amongst the last trees. The 

 other speciality of Disensen, Erebia embla, I nearly missed, for 

 I had expected to find it either out in the open, or amongst the 

 last trees ; but about an hour before the sun went in on June 

 5th I happened to cut across a thick belt of pine wood some fifty 

 yards from the open, and here I found this fine species plentiful. 

 As many examples as I required, some twenty in number, were 

 quickly obtained ; they included four var. succulenta and one var. 

 unicolor. Of the other species seen, the most interesting was 

 Chrysophanus amphidamas, of which I netted several worn ex- 

 amples on the railway bank between Saeterstoen and Disenaen, 

 a few hundred yards from the former railway station. This is 

 interesting, because Herr Sparre Schneider writes me that this 

 species has never been taken in South Norway by Norwegians, 

 only by Englishmen, and as the only account of its capture there 

 by an Englishman that I can find is that of the one example 

 recorded in 'Entomologist,' xxxi. p. 215, by Mr. E. S. Standen, 

 the confirmation is satisfactory and conclusive. Amongst other 

 butterflies seen were Euchloe cardamines, Coenonympha pamphilus, 

 Hesperia malv(B, Pieris napi, Leptosia sinapis, Pararge hiera, 

 Celastrina argiolus, Glaucopsyche cyllarus, and Bumicia phlceas, 

 all fairly plentiful on the railway bank. Females of Brenthis 

 freija were busily ovipositing out in the open bog, yards away 

 from anything but mosses and lichen. An interesting and an 

 unusual sight to me was the number of Hemaris tityus {bomby- 

 liformis) that were flying over flowers of a species of Vicia, eight 

 or ten examples being in sight at once. 



I fear that the fine bog of Disensen will soon be a thing of the 

 past. It has at present an area of several hundred acres, and is 

 crossed in the middle by the railway. On the north side the 

 swamp is still in its pristine condition, but the southern half has 

 deep dykes cut in it, and the surface at the time of my visit was 

 being turned rapidly into arable .land, and I apprehend, from 



