24 BUTTERFLIES OF THE RIVIERA 



some authors placed, with the present species, in the 

 genus Zephyrus, Dalm. 



T. Spini. 



TIMES OF APPEARANCE. May and June. 



HABITAT. Saint-Martin-Vesubie, on the Route de 

 Venanson ; also in the valley of the Madone. 



It has been taken near the summit of the Balme de 

 la Frema, at an altitude of about 7500 feet. Common. 



LARVA. On Prunus spinosa (Sloe) ; Crataegus 

 oxyacantha (Hawthorn). I have always found it on 

 Rhamnus eatharticus (Common Buckthorn), though it 

 is not stated in the works as living on this plant. 

 Milliere also gives wild rose (rosier sauvage). Found 

 in June. 



The caterpillars may be obtained by beating the 

 plants on which they live. 



Of the eighty-one larvae I collected, in the summer 

 of 1891 (from June 14 th to 24 th ), nearly every one 

 succeeded, 



PUPA. Much resembles that of Spini. 



It is brown. The first chrysalis of those I collected, 

 was formed June 25 th ; the last one was finished on 

 July 23 l>d . 



VARIETIES. v. Lynceus. 



Upper surface with large yellow spots. 



Another form, which is rather an accidental aber- 

 ration than a fully established variety, has the white 

 bands of the under side, especially on the h.-w., 

 considerably enlarged. 



I have here to mention, what is apparently a curious 

 hybrid of T. Spini and llicis, specimens of which I 



