108 THE BUTTERFLIES OF SWITZERLAND 



Pesio, at and above Chiusa, viii. 14. &c. /92 (Xorris) ; Botzen, vii. 

 18, 1900 {n.-Hnt.). 



Directions of Yar. (a.) increase of size : 



Yar. Allionia, l''abr. (Fauna, Hb.: Fauna var., E^p. : var. Martiani, 

 H.-S.) ; 51mm., and witii base un.s. gr. instead of brn. 



Log. In Switz. only from Martigny to Brig (or a mile or two on 

 each side) ; v. ab. at Follaterre and the Tour de la Batiaz, r.(/., viii. 

 21, ix. 1/99 ; viii. 27, 1900 ; also Sierre, viii. 18/99 ; Brig, ix. 7/98 

 (Tf7i.), &c. ; also at Lugano {H(j.). 



Susa, viii. m. /97 ; Aosta, viii. m. /94 {Tiitt) ; in the lower parts 

 of the Alpes Maritimes (I'oirdl). 



(b.) absence of pupils in the eye-spots ; in 

 both on f.w. up.s., and in the lower 

 one on un.s. S , and in the latter on 

 both sides in $ ; also in the small one 

 at anal ang. h.w. on both sides, <? 

 and ? ; v. usually. 



(c.) up.s. h.w. wh. spots (1-4), forming ante- 

 margl. row above eye-spot at anal 

 ang. (as in Fidia). 



(d.) traces of same wh. spots un.s. 



(e.) amount of mottling un.s. h.w. ; some- 

 times almost unicolorous in 'i (as in 

 Fatna). 



(f.) amount of angulation in dk. cl. line, 

 sometimes approaching Fidia. 



(g.) amount of yell, band in J , f. and h.w. 

 up.s. and f.w. un.s. 

 [Obs.^This insect in the Ehone Valley varies so much in detail, and 

 approaches so closely to Fidia and Fatua, that I feel some doubt whether all 

 are not local races of the same sp.] 



*S. Fidia, L. ; 56mm. 



2 larger than 3^ , and with more conspicuous markings. 



Dist. Char. up.s. f.w. with 2 eye-spots, and 2 wh. spots between 

 them ; un.s. h.w. with dk. cl. line jutting in the middle into 

 the It. band in a long sharp ang. 



Log. Digne, vii. m. /98, not c. and difficult to obtain (B.-Brn.) ; 

 Levens ; St. Martin Vesubie (I'owell) ; Spondinig, viii. 18, 1900 

 {E.-Brn.) 



Direotions of Var. (a.) diminution in size, culminating in : 



ah. MontiGOla, Thicrrij-Miei/ ; wh. is also darker. 



*S. Actaea, Esp.; 48mm. 



5 with a 2nd eye-spot up.s. f.w. and traces of a band. 



