1907.] 35 



It shows A (upright lines) the supposed distribution of H. 

 hyerana at Hyeres ; B (wide cross lines) the source of the " La Plage " 

 specimens ; C (close cross lines) the habitat of the " Les Maurettes" 

 race. Except that I know that the insect occurs some miles further 

 to the east, the facts represented by B and C are all that I can posi- 

 tively assert, but the blank portions of the map as uninhabitable by 

 H. hyerana, except perchance by a stepping stone here and there, may 

 be accepted as fairly trustworthy. 



{To be continued). 



NOTES ON TUE LEPIDOPTERA OF AROSA AND THE SPLUGEN 

 AND SAN BERNARDINO PASSES. 



BY A. H JONES, F.E.S. 



From what 1 can gather, Arosa, lying at au elevation of 5900 

 feet, has been little worked entomologically ; from the evidence of 

 a resident friend of mine that a butterlly net is seen on rare occasions, 

 it may therefore be of interest to place on record the species of 

 Lepidoptera I noticed during my sta}'^ between July 7th and 26th last. 

 One great attraction to this district is the pine woods, intersected 

 by various paths which lead up to the tree limit in one direction, and 

 down to the river Plessur in another, giving an endless variety of 

 localities to explore. The country somewhat reminds one of the 

 Upper Engadine, from which, as the "crow flies," it is distant about 

 •10 miles in a north-westerly direction. Arosa is reached from Coire 

 by diligence and being a climb of 4000 ft. is a very tedious business 

 and it is better to walk by the old road taking the diligence as far as 

 Tschiertscheu, but to this route I will refer later. 



Although the country is so truly beautiful, the mountains in the 

 immediate vicinity are disappointing as the highest does not reach 

 10,000 feet ; there are no glaciers and in the summer practically 

 little snow, only here and there small patches on the mountain sides. 

 Such was the appearance of Arosa when I reached it on July 8th, 

 but in a few days how all was changed ! Clouds for several days had 

 been sweeping up and down the valley, the temperature fell on July 

 12th, and for two days the snow fell intermittently, covering the moun- 

 tains, trees, and meadows, presenting the appearance of the depth of 

 winter ; although the snow lay six inches deep in the meadows, 

 it had all disappeared in two days under the influence of the warm 



