36 THE BUTTERFLIES OF SWITZERLAND . 



ab. $ Icarus, Butt. ; ? col. of typical c? , but with ante-margl. 

 row of or. spots. 



ab. ? Semiclara, Tittt; ? with col. of ab. Clara at bases only. 



ab. ? Angulata, Tntt : 5 like ah. Pallida, hut with angulated 

 row of pale bl. spots just inside or. spots f.w. up.s. 



(b.) presence in type ? , and ab. Cicrulca 2 

 ' of wedge-shaped mark and cl. spot up.s. h.w. 

 (c.) tendency to loss of spots un.s. 

 ab. Iphis, Meit/eji : with one basal spot only un.s. f.w. 

 ab. Icarinus, So-iha : wdthout any basal spot un.s. f.w. 

 ab. Semi-persica, 'fUtt : spots on h.w\ more or less obsolete. 

 ab. Persica, llirnrrt .• with all exc. the disc, spots obsolete, 

 f. and h.w. 



(d.) tendency of spots un.s. to unite or 

 lengthen into streaks. 



ab. Arcua, l'\ir. ,- in wh. the lowest basal spot, f.w., is united with 

 the lowest of the cl. row into a long bow-shaped streak. 



ab. Striata, Ttitt .- in wh. the spots are more or less united (or 

 prolonged) into streaks. 

 [Obs. — These various abs. not having been sufficiently noticed, it is 

 impossible to say whether all of them occur in Switz. or the central Alpine 

 region. The ab. Ccerulea, F((i-hs, magnificent examples of wh. are in the 

 collection of Col. Agassiz at Lausanne, is so strikingly different from the c. 

 form of the ? with bl. at the base and slightly shaded over the centre of the 

 ws., that I have ventured to name the latter ab. Ccertdettcois ; this form may 

 be found wherever the brn. type ? appears. Ab. Arena is to be found in the 

 Khone Valley, and is c. in the neighbourhood of Aigle and St. Triphon. Ab. 

 Icarhms may be taken in tlie same Iocs, amongst others, and in vi. /98 was by 

 far the commonest form at Veytaux ; I have also a splendid ab. Striatti from 

 the same place. -Tudging from the analogy of other " blues," it would seem 

 probable tliat in the S. of the region should also occur : 



ab. Celina, <>ht/,. .■ ^ with margl. row of blk. spots up.s. h.w.j 

 P. Eros, Ochs. (Tithonus, Hh.) ; 29mm. Fd. pit. 



(and 1.) unknown. 

 S It. greenish-bl., $ blackish brn. with pale bl. at base. 

 Dist. Char. col. (between Corydon and Dai)ii>n) in connection with 

 size ; (un.s. v. like Alexis). 



Loc. Principally in the Bernese, Valaisian, and Grisons Alps 

 from about 4000ft. to 7000ft., vii.-viii. Pont de Nant (Vaiid), vii. 

 18, 27 (/'/.) ; Glacier de Trient ; Pierre-a-voir ; Diablerets ; Cretes 

 de Thyon ; Evolena ; Inden ; Loeche-les-bains ; Daubensee; Gorner 

 Glacier, &c. (Far.) ; Simplon Village, vii. e. /DO {Tntt) ; Siniplon 

 Pass, nr. 1st gallery, viii. 6/98 ; nr. 5th Refuge, viii. 12,08, ab., 

 $ rather later ; vii. 12/01, ^ and $ ; Steinenthal, vii. e. /99, v. 

 ab. (TJ7(.) ; Haas, vii. .7-16 /98 ; Zermatt, vi. 28/99 (/>/.«?.) ; viii. 

 9/01 {!Sloper) ; Ritfelalp, vii. /Ol (Linn.) ; upper end of Lauter- 

 brunnen valley, viii. 1, 1900 (117*.); Little Scheideck {I"is.) ; 



