DIURNI OF THE UPPER ENGADINE. 307 



will establish itself in this country. I had a letter from the late 

 Mr. Charles Darwin, in which he wrote that he shared my 

 enthusiasm on the subject. 



Chirbury, Beckenham, November, 1885. 



DIURNI OF THE UPPER ENGADINE. 

 By William E. Nicholson. 



During the summers of 1884 and 1885 I had the pleasure of 

 spending the month of July and a few days of June in the 

 Upper Engadine, in company with my father, when we 

 diligently collected the butterflies of the neighbourhood. A 

 list of what we captured may be acceptable to some of the 

 readers of the ' Entomologist,' now that more interest is shown 

 in continental Entomology. 



We made St. Moritz our head -quarters for the greater 

 portion of our first visit, and Pontresina for the whole of our 

 second visit. Pontresina is by far the best centre for entomological 

 excursions, as it is also for mountain excursions, as from thence 

 most of the best localities can be easily worked ; notably the 

 Bevers Valley, the Koseg and Morteratsch Valleys, and the 

 Heuthal. The only good localities easier to work from St. Moritz 

 were Alp Laret and the Fax Valley. The month to choose for 

 collecting in the Engadine is July, as very few species occur in 

 June, and at the end of July all the fields have been mown, and 

 most species are getting worn. I am indebted to the kindness of 

 Dr. Lang for the names of several of the species mentioned in 

 the following list : — 



Papilio machaon, rather common near St. Moritz in 1884, but 

 scarce in 1885. 



Parnassius apollo, abundant near St. Moritz, but not so 

 common near Pontresina. P. delius, common in the neighbour- 

 hood of Pontresina, especially in the Roseg Valley ; it was also 

 abundant in the Fex Valley. 



Aporia cratcegi, abundant early in July, but soon over. 



Pieris hrassicce, P. rapce, and P. napi, common nearly every- 

 where, but not abundant. P. napi was the commonest ; and the 

 aberration, hryonice, was not rare, but difficult to obtain in good 



