A\D THF, ALPS OF CENTRAL ETIROPE. 75 



incomparably larger and finer; S of the former often not more 

 tlian HSmm., ? s of the latter sometimes as much as 50mm. 

 (b.) confluence of silver spots un.s. h.w. 

 ab. Yaldensis, Kxp. : in wh. the bli\. spots un.s. f.w. are also 

 confluent. 

 [Obs. — I have never seen this ab. nor met with anyone who has, it must, I 

 think, be v. scarce.] 



Genus, Brenthis, Hh. 



Dist. Char. un.s. h.w. either prp. or silvery patches or both. [In 

 the case of II crate, wh. has neither, the gen. arrangement of 

 un.s. h.w. is such as to connect it unmistakably with others of 

 the genus, such as Selene and Ino.] 



B. Euphrosyne, L. : 42mm. Fd. pit. Viola canina, V. 



.si/lvatica, Frcuiarici, kc. 



? gen. rather larger, and deeper or. than ^ . 



Dist. Char. Drick-red spots and suffusion un.s. h.w. 



Loc. (ien. distributed and often c. in the lower valleys and 

 slopes, and by no means rare at 5000ft., e.ij., Berisal, and mounting 

 occasionally up to 7000ft ; gen. larger and brighter at lower eleva- 

 tions [e-ii., V. line at Lucens, v. 21, 1900, Fis.), and smaller and 

 darker at greater altitudes; v.-vi., and viii. at lower, vii.-viii. at 

 higher elevations ; fairly large and well-coloured at Ferpecle, viii. 

 m. /99 {'f'litt). My earliest date is Veytaux, iv. 5/99. 



Directions of Yar. (a.) exaggeration of blk. spots and suffusion 



at base of ws. 

 (b.) tendency to diminution of margl. row of 



silver spots un.s. h.w., culminating in : 

 ab. Obsoleta, Tntt : in wh. there are none. 



B. Selene, SrIiijI'. (Euphrosyne, Jin/str. ; Euphrasia, 



Lenin); 37mm. Fd. pit. Viola canina. 

 ? gen. rather larger and slightly more or. than <? . 

 Dist. Char. un.s. h.w. chestnut-brn. spots and suffusion. 



Loc. V. local and gen. scarce in Switz., v.-vi. and viii. Where 

 it occurs in the mtns., up to nearly 0000ft., I feel no doubt there is 

 only one brood, vii.-viii. Basle {Knecht) ; the Beehburg (JL-S.) ; 

 Biiren and Soleure (Meissner) ; Berne ; Burgdorf ; Lattrigen, 

 Meiringen, and the Oberhaslithal as far as Guttannen, and above, c. 

 in the last two Iocs. (M.-l).); Gadmenthal, nr. the Steine Glacier 

 {Fretj) ; Rosenlaiii, rather worn, vii. 15/90 (Pritleaiu:) ; nr. Lausanne 

 (Laharpe) ; on the Curfirsten, and above Amden {Td.^r filer) ; Weesen 

 Marsh, vii. 5/01 {Fis.) ; Zurich, nr. the Trichterhaus l\lill, v. scarce 

 (Snell) ; Weissenburg,c. {Il'i.); at the Grangettes, batween Villeueuve 

 and Bouveret, v. 19, fairly c, J s only ; vi. 7 99, v. ab., J s also ; 

 banks of the Rhone at Bouveret, vi. 1900 and 01; Revereula/,, 



