36 [February, 



sun : butterflies were then disporting themselves as usual and Arosa 

 was again as I found it on my arrival. 



The locality does not appear to be so rich in species as the Upper 

 Engadine. Erehias were not plentiful and I saw but one specimen 

 of Parnassius, probably delius. Pieris napi, var. hryonice, was ex- 

 tremely numerous in one spot near the river Plessur where its 

 food-plant, Biscutella Icevigata, grew in great abundance ; another 

 butterfly, Li/ccena oninima, was to be seen in hundreds together, 

 resting on the muddy roads. I have seen L. argus and corydon in 

 countless numbers in the Alps under similar conditions but never 

 minima. 



On July 18th, a cloudless day, I walked over the Furkahohe Pass 

 (8020 ft.) to Davos Platz, which is 1000 ft. lower than Arosa. At 

 the top of the Pass a dark form of Erebia glacialis was not uncom- 

 mon flying over the screes and some of the specimens were distinctly 

 V. pluto. The following day I returned by way of the Strela Pass 

 (7800 ft.) and Laugwies, but did not meet with anything of particular 

 interest. 



I returned to Coire by the old road already referred to. Oa 

 reaching Tschiertschen Erehias suddenly became very abundant and 

 that local species oeme was in great numbers, but I dared not linger, as 

 storm-clouds were gathering in every direction and I reached the 

 inn only just in time for shelter. 



On July 28th J left Coire for Spliigen, by way of Thusis. 

 Having the day before me I collected along the Via Mala. Butter- 

 flies, such as Argynnis paphia and other species met with at a low 

 elevation, were extremely numerous. At Spliigen I stopped at the 

 Bodenhaus and Post, a most comfortable hotel for a prolonged 

 stay. Just beyond the village the road bifurcates — to the left over 

 the Spliigen Pass, and to the right over the San Bernardino Pass — -1 

 made excursions to the top of both passes, but did not meet with any 

 particular species. The best collecting ground, during my short stay, 

 I found to be on the Spliigen Pass, just beyond the first tunnel. 

 Here Erehia eripliyle was fairly common, and Parnassus delius in 

 considerable numbers. I also took a specimen of Plusia hractea 

 flying in the sunshine. I left Spliigen on August 4th. 



The following is a list of the Lepidoptera met with ; I am 

 indebted to Mr. Louis B. Prout for kindly naming the more obscure 

 species. 



On one or two nights at Arosa the electric light proved very 



