30 



THE ENTOMOLOGIST S RECORD, 



mont, but further on the species acquires such a different look that it- 

 is surprising no one should have as yet described it. The race of 

 Central Italy resembles more the Spanish alfacarensis, Ribbe, but may 

 be distinguished from it, more or less, by the same characters as dis- 

 tinguish the Spanish A. ara</onensis from its Tuscan race. Comparing. 

 Tuscan series with series from Central Europe the following differences 

 are clearly seen : in etrtisca the size is slightly larger, the wings are 

 more rounded ; in the male the black streaks at the marginal end of 

 the neuration are less distinct or absent ; the black submarginal dots 

 are less frequent and less conspicuous when present ; the underside 

 colouring is constantly totally different in the two sexes, whereas in 

 the northern race it is so similar in both sexes that even such a minute 

 analyser as Tutt described their variations as one ; seasonal dimor- 

 phism is constant and striking, whereas further north it is so incon- 

 spicuous that Tutt is quite sceptical as to whether it exists at all. Our 

 first generation differs less from the nimo typical race, our second 

 generation is the most characteristic of etrusca. In my original paper 

 I have accurately compared these three forms and made out their- 

 differential characters, which it would be too long to transcribe here, 



I wish to draw attention to the fact .that even in the large group 

 of Central European races taken as a whole, several will probably 

 emerge on comparison of sufficiently large series ; for instance, the 

 Alpine race, as illustrated by a series collected in the Valais by 

 Wullschlegel, and now in my collection, is far from identical with 

 races of the plain ; the submarginal series of black dots of the male- 

 is much more conspicuous ; the underside is very dark and in some- 

 individuals contrasts with a wide marginal white zone, somewhat as in- 

 hylas ; the white rings round the black dots are very wide and the 

 latter tend to obliteration ; females with reduced or no blue scaling 

 are quite frequent ; race inalpina, mihi, 



A sharp contrast exists between these Alpine characters and those 

 displayed by theds in the higher regions of the Apennines as compared tO' 

 etrusca, showing quite a different mode of variation ; the same con- 

 trast I have shown to exist in coridon from the Alps and coridon race 

 sibyllina, Vrty., from the mountain tops of the southern part of Cen- 

 tral Italy. Here in both species the size is very small, the underside 

 is extremely pallid (entirel}^ pure white in culminating male indi- 

 viduals), the black dots very minute, the premarginal lunules of a 

 pale yellow colour in the male and pale orange in the female (race 

 APENNiNiGENA, mihi). Typical series from the Sibilline mountains in" 

 the Piceno at 1200 mm., collected by Querci. 



Turning our attention again to the Central European group of 

 races, it may be noticed that the English one differs markedly from 

 Eottemberg's race of the Warte in an exactly opposite direction from 

 the Italian one, the race of Northern France (Eure) coming near to it;, 

 the females are more blue ; the lunules have a lesser extent and are 

 less vivid ; the underside of the male is darker and less frequentl}' 

 tinged with fulvous ; the black dots are smaller and set in a more 

 regular median series. This I gather from a series collected by the 

 late Conquest in June, 1906, and August, 1905, at Cuxton (Kent) ; 

 I suggest the name britannorum, mihi. Another very striking and 

 interesting race was collected by the same entomologist in May, 1875, 

 at Ventnor, in the Isle of Wight, and subsequently purchased by me ; 



