( xliv ) 



British Museum material (containing Zeller's and Fray's 

 insects) and this helps me less even than the specimens I 

 am exhibiting, to unite, even in the most superficial and 

 artificial manner, (7. arcania and C. sati/rion. 



"Although, as may be gathered from this, I consider C. 

 sati/rion specifically distinct from C. arcania, I am not at all 

 certain that it is distinct from another European species. I 

 have not seen it suggested before, but I believe that C. satyrion 

 is a high Alpine form of C. iphh. The reason for this 

 opinion is based on the remarkable variation exhibited by a 

 series of insects, some two hundred in number, which exhibit 

 both on the upper and undersides, and in both series, the 

 most complete gradation betw^een typical satijrion and ■iphis ; 

 in fact, extending somewhat beyond typical iphis, as exem- 

 plified in lowland districts, in the matter of suppression of 

 ocellated spots on the underside, the range extending from 

 specimens with no ocellated spots and scarcely a trace of the 

 white band on the underside of the hindwings, to the strongly 

 banded and fully ocellated examples which resemble 

 typical sati/rion. 



"It may be well to see how the material exhibited would 

 divide on the principle by which the species (?) are at present 

 separated, viz. , by calling those satyrion with a white band on 

 the underside of the hindwings, and calling those iphis 

 without this baud. By this method Nos. J, 2, and 10, 11 in 

 Eow 1 (males) would be satyrion, the remainder iphis. Nos. 

 1, 3 of Row 2 (females) would be satyrion, and the remainder 

 iphis. Nos. 5, 6, 7, 8, 9 of Row 3 (males, undersides) would 

 be satyrion, the remainder iphis. Of the female undersides 

 (Row 4), Nos. 4, 6, 7, 8, 9 would be satyrion, the remainder 

 iphis. I think you will all agree with me that such a sub- 

 division of these specimens, which were all taken flying 

 together on one grassy slope at Le Lautaret at an elevation 

 of about 8,000 feet, would be somewhat absurd. When I 

 further add that, under this arrangement, of two specimens 

 taken in copula, the male would go to satyrion and the female 

 to iphis, I think you will agree that I have very good ground 

 in supposing satyrion to be an Alpine form of C. iphis and 

 not of C. arcania. 



