O [June, 



(" gerolle" in German), whicii fill up a great deal of the heads of the 

 valley ; E. Gorge was with it, but not so numerous, and -E". Jappona 

 very abundant on the pastures around. On the same "gerolle" I found 

 sitting on the stones the rare Geometer Gnoplios Zellerarla, and was 

 lucky enough to get two pairs of Pieris CaJUdice at the same time. 

 At the remarkable springs which form the source of the Albula, 

 JParnnssius Delius was abundant, and here its larva was discovered by 

 Professor Zeller feeding on Saxifraga aizoides. 



Close to the head of the pass, among the bare boulders, surrounded 

 by unmelted snow, were flying specimens of our Lyccena minima {Alsus) 

 as fresh and lively as on the most sheltered bank at home ; and Lyccena 

 Orhiiiihis, Eros, Optilete and Pheretcs were found in greater or less 

 abundance. In the evening, I walked down the valley about 8 miles to 

 Bergiin, a large thriving village at about 4500 ft. elevation, and found 

 a most comfortable old-fashioned inn, kept by the ex-mayor of the 

 commune, Herr Cloetta. From what I hear this house is much to be 

 preferred, at any rate for bachelors, to the new hotel, and I certainly 

 found a warmer welcome and a more moderate bill than anywhere else 

 I stayed in Switzerland. 



The environs of Bergiin are very rich in Lepidopfera, several 

 hundred species being enumerated in Professor Zeller's paper in the 

 Stett. ent. Zeit. for 1877. I was only able to stay one whole day 

 here, and this I spent in a walk up the Tuorsthal, where I added several 

 good species to my list. Parnassins Apollo and Delius flew here in 

 company ; Argynnis Amathnsia, Dictynna, and Euplirosyne were not un- 

 common, though the season of A. T/iore, which is found here in June, was 

 now over ; several Lyccence, as Hylas, Eumedon, Corydon, QSnon, were 

 common ; A. crntcegi, Colicts Hyale, Polyommafus J)orilis,\?iY. snhalpina, 

 Erehia Sfygne, Euryale, and Goante, Syricthus alvens, and others, made 

 up a good day's work. 



So finished a most agreeable and successful week, in which I took 

 over 70 species of Blwpahcera, and 20 or 30 of Heterocera. 



I believe that in some parts of Southern Tyrol, or the Italian 

 side of the Alps, this number might be considerably exceeded, but there 

 are so many unexplored valleys in all parts of the Eastern Alps that 

 no entomologist need be at a loss where to go. 



Preston House, Cirencester : 

 April, 1879. 



P.S. — Since writing this I have seen Mr. Forbes' account (vol. 

 XV, p. 275) of his experience farther west at the same time. He seems 

 to have found the valleys of Arolla and Anniviers even richer than the 

 Albula and the Engadine. The most remarkable species mentioned by 



