1880.] 257 



euphenoides. The Mediterranean fauna would, therefore, seem to ex- 

 tend up the valley of the Durance quite into the Alpine district, 

 From Briancon we drove by Mont Genevre, a pass of about 6000 ft., 

 over the frontier to Oulx, a small village (at an elevation of 3500 ft.) 

 on the Mont Cenis railway, between Bardoneche and Susa, and 

 after a day there, proceeded to Turin. Spending the Sunday there, 

 we, after a good baking, were glad to get away early next morning, 

 and travel by rail to Arona, and then up the lake by steamer to 

 Baveno. Baveno being hot and crowded, we left next day, and drove 

 up the Val Anzasca to Ponte Grande, a charming village about 2500 

 ft. above the sea, with a lovely view of Monte Eosa. Finding good 

 quarters here, we stayed several days (from July 1 — 5). The Val 

 Anzasca is a good example of an Italian alpine valley, and proved like- 

 wise very productive in insects, though the weather was not as fine as 

 it might have been. "We only had one really fine day, July 3rd, and on 

 that Mr. Salvin and I working down the valley towards Vogogua, saw 

 or caught fifty-two species of butterflies, not a bad day's work for one 

 morning between 8 and 2 p.m. In this valley below Ponte Grande 

 alpine and southern species were curiously interblended, as evidenced 

 in such forms as Neptis and Libytliea occurring with Parnassius and 

 other mountain insects. From Ponte Grande we went further up the 

 valley to Macugnaga, and after spending a day there, over the Monte 

 Moro pass (about 9000 ft.), and down the Saas Thai to Saas, and 

 eventually Visp. After this, except for an hour or two near Bienne, 

 on our way home, we had no occasion to use our nets. 



The total number of species of Mhopalocera seen or caught by us 

 during the trip was 103, and, had the weather been finer, this number 

 would, doubtless, have been increased. We altogether missed numbers 

 of common Alpine species, as owing to the unusual amount of snow 

 that had fallen during the winter, the season was extremely backward, 

 so that had we started a fortnight later, our "bag " would, no doubt, 

 have been correspondingly increased. A list of some of the more un- 

 common species we obtained is appended. 



Papilio Fodalirius : Chambery, Col du Lautaret, Briancon, &c. 



Parnassius Apollo : Yal Anzasca, Col du Lautaret, &c. P. 

 Mnemosyne : Val Anzasca, above Ponte, Macugnaga. 



Pieris napi, var. bryonice : several near Macugnaga. 



Anthocliaris Bella, var. simplonia : rather common towards, and on, 

 the top of the Col du Lautaret. A. euphenoides : this truiy Mediter- 

 ranean species occurred, but not commonly, at Briancon ; one specimen 

 was seen at an elevation of about 5000 ft., on the road towards Mont 

 Genevre. All seen were males. 



