388 Mr. H. J. Elwes on the 



deluges of rain. The vegetation is here much more 

 luxuriant, the forests larger and finer, and the climate 

 of the higher valleys damper and less sunny than at 

 Vernet. Directly one crosses the watershed between the 

 Mediterranean and the Bay of Biscay, as you do in 

 travelling by rail from Toulouse to Luchon, the change 

 from the arid vineyards, wheat-fields, and olive-gardens 

 of Koussillon to the green pastures, beech-woods, and 

 maize-fields of Beam is very marked. I have there- 

 fore marked all the species I noted which occur in 

 the Eastern and Central Pyrenees, or both of them, 

 with an E. or C, to show the distribution as far as 

 I know it. 



From Luchon we went on to St. Sauveur and Gavarnie, 

 which latter I found a very charming place, both for 

 scenery and collecting, and concluded our trip by 

 ascending the Pic du Midi de Bigorre, where I was 

 astonished by taking Lyccena bcetica, Erebia Lappona, 

 Lyccena orbitulus, and Rhodocera rhamni, all within a 

 few yards of each other, at about 8000 feet elevation. 



The return journey was made via Bayonne and 

 Biarritz, where I stayed part of two days, and found 

 common, in the marshes near the town, several species, 

 such as Satyrus phcedra, Coenonympha cedipus, Lyccena 

 alcon, and Cyclopides morpheas, which I had never 

 previously taken either in Germany, Switzerland, or the 

 Pyrenees. 



In the enclosed list I have given my authority for all 

 species not taken by myself, and have marked with a ? 

 a few which seem to have been included by others on 

 doubtful authority. An exploration of the Spanish side 

 of the mountains will doubtless add several species to 

 this list. The elevations at which the various species 

 occur are, of course, only approximate, but are in 

 some cases interesting, as showing how high up some 

 of the southern species occur ; Anthocharis euphenoides, 

 for instance, which is a vernal species on the Mediter- 

 ranean coast, goes up to 6000 or 7000 feet in July, 

 whilst Ii. rhamni, a vernal and autumnal species with 

 us, was fresh out in July at 7000 — 8000 feet in the 

 Central Pyrenees. 



