312 BKITISH BUTTERFLIES. 



it also occurred occasionally elsewhere (Keynes). In Bavaria it is fouud 

 in the forest-glades of the lowlands (Schmidt), is particularly common 

 around Munich (Kranz), and in meadows at Kempten (v. Kolb); in 

 the mountains, it occurred on an extensive sandbank laid down by the 

 river near Oberstdorf, and overgrown with willow and other bushes, 

 with Lycaena avion, Agriades bellargus, Polgoinmatus icarus, Cupido 

 minimus, Plebeius argus (aegon), P. avgyvognomon, etc. ; it also occurred 

 in the Oythal with Cupido minimus, the latter ,in profusion (Dadd). 

 In Switzerland we have already noted many of its characteristic 

 habitats, but, around Geneva, it is common in wood-clearings, where it 

 flies with Glaucopsyche cyllarus and Cupido sebrus (Blachier); whilst it 

 is distributed almost everywhere by the roadsides and footpaths of the 

 mountains up to 2300m., right into the alpine region (Favre); it 

 occurred in May, 1907, in the Lavey Woods, amidst a profusion of 

 flowers and some interesting insects — Glaucopysche cyllarus, Celastrina 

 qvgiolus, Brenthis euphrosyne, Leptidia sinapis, etc. ; it was common also 

 on the banks of a little stream between St. Triphon and Bex, where 

 Cupido sebrus, C. minimus, and Polyommatus icarus were common, 

 Plebeius argyrognomon being more sparingly represented, and Glaucopjsyche 

 cyllarus going over; it was found also near Sion, where the meadow T s 

 were a glorious sight, although the railway banks were the most 

 prolific hunting-ground, and where " blues" of various kinds, including 

 C. semiargus, were most abundant ; in another butterfly corner, near 

 Sonciez, also "blues" were swarming — Agriades bellargus, Polyom- 

 matus hylas, P. icarus, etc., occurring with C. semiargus (Tetley); 

 midway between Vissoye and Zinal, near the chapel of St. Laurent, it 

 was seen in swarms in August, 1898, with Plebeius argus (aegon), 

 Polyommatus eros, P. hylas, Aricia eumedon, etc. (Rowland-Brown); 

 whilst, on the southern side of the Alps, it haunted the roadsides at 

 Orta, and was found in the Val Anzasca, with other species of blues. 

 In the north of Switzerland, it appears to be widely distributed as a 

 constant inhabitant of the bogs above the Lake of Zurich ; at the end of 

 July, 1908, it occurred freely, though worn, as we have already noted, 

 in the bogs above Staefa, and near Einsiedeln, when we were hunting 

 Coenonympha tiplwn, in its chosen haunts in this neighbourhood. The 

 species also occurred at the end of July, 1906, on the slopes above 

 Goschenen, where a little stream, trickling down the mountain-side, 

 made here and there a flat marshy spot, that this species shared with 

 Coenonympha davwiniana and Brenthis pales ; also on a low swampy 

 piece of ground covered with flowers, and swarming with butterflies, 

 C. semiargus was quite abundant, with numbers of Brenthis amathusia, 

 Beodes virgaureae, Chrysophanus Iiippotlwe, Lycaena avion, etc., in the 

 Goschenen-Thal. It also occurred on the slopes at the entrance to 

 the Val Tremola, high above the pine forests of Airolo, on the way up 

 the St. Gothard Pass, on the exposed slopes where the only "blue" 

 besides C. semiargus was Aricia astrarche, but where plenty of Argynnis 

 aglaia dashed up and down the slopes, and Erebia tyndarns and K. 

 euryale were abundant, as well as on a small marshy spot still higher 

 up the Pass, where Brenthis jxilcs, Chrysophanus Iiippotlwe, Hesperia 

 alveus, and Polyommatus hylas alone kept C. semiargus company ; on the 

 flowery slopes leading down to the alder carr, near the bridge between 

 Airolo and Piotta, it flew with Lycaena avion, and swarms of Agriades 

 coridon, Aricia astrarche, Plebeius argus (aegon), Polyommatus hylas, /'. 



