;8 LÉPIDOPTÉROLOGIE COMPARÉE 



D'ailleurs Plantaginis est extrêmement variable en Grande-Bretagne 

 et les renseignements suivants donnés par Charles Barrett sont très 

 intéressants : « Mr. Sydney Webb has an extraordinary séries of 

 varieties, some with the ground colour of both fore and hind wings 

 clear white; one with the fore wings yellow and the hind white; 

 another with the stripes of the fore wings absent from one portion, 

 confluent in another; and one in which almost the entire fore wings 

 are creamy white without markings ; also spécimens in which almost 

 the entire hind wings are black, or the central portion devoid of 

 markings, or with only marginal spots. A spécimen in Mr. S. Ste- 

 vens's collection is entirely black except some pale lines in the fore 

 wings and a few dots in the hind; and a female has the fore wings 

 orange, and the hind lurid red; while Mr. Capper has a spécimen 

 of the same sex having fore and hind wings alike creamy white, 

 and Mr. J. Harrison several with a broad yellow stripe along the 

 Costa from base to apex. Some spécimens reared by Mr. R. Adkin 

 from Sussex larvae hâve the pale stripes of the fore wings obscured 

 with smoky black ; and a female, from Marlborough, in Mr. A. Ro- 

 binson's collection has the outer half of the fore wings mainly occu- 

 pied by a broad band of cream colour, with the markings reduced 

 to a few small spots. There is moreover a permanently récurrent 

 variety known as var. Hospita, in which the cream colour or yellow 

 in the maies is completely replaced by whitish, the hind wings espe- 

 cially being clear white. Several spécimens of this form are said 

 to hâve been taken in the Church Stretton district, Salop, but it is 

 known as a permanent form only on the higher portions of hills 

 and mountains in Scotland. The females found with it do not take 

 by any means the same direction of variation, but hâve the black 

 markings of the hind wings much extended and intensified, and 

 the orange portions often tinged with dull red. D"" Mason has two 

 maies of this var. Hospita in which the hind wings hâve no trace 

 of the usual central black markings, and Mr. S. Stevens one in 

 which they are reduced to a few marginal spots ». 



En France, dans les forêts des plaines de Picardie et dans les 

 basses montagnes des Pyrénées et des Alpes, la Nemeophila Plan- 



