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ing. The usual form in Central Spain of this species is 

 with the almost white male, known as var. hisjxina, in the 

 Albarracin Sierra, however, it has been known for some time ; 

 a second form occurs with males of a deep violet-blue colour, 

 and which have been called var. coi'ydonius of Herrich- 

 Schaffer, described from specimens from Asia Minor. 



"Dr. Chapman on his A-isit to Albarracin in 1901 found both 

 these forms, but could not ascertain any evidence of inter- 

 breeding, or any intermediate specimens, and he states in ' The 

 Entomologists' Record,' Vol. XIV, p. 119, that ' it was difficult 

 to say why they are not entitled to specific rank.' Whilst I 

 was staying at Albarracin I was fortunate in obtaining 

 through the kindness of Miss Fountaine, who was also 

 collecting there, a copy of Zapater and Korbs' ' Catalog de 

 los Lepidopteros de la Provincia de Teruel,' Albarracin being 

 of course in this Province. 



"These authors have the following observations on the vari- 

 ous forms of the species occurring in the district. Corydo^i 

 generally distributed; var. albicans, rare; var. corydonms, 

 not rare, locally ; var. hisjmna, not abundant. My observ- 

 ations lead me to agree with Dr. Chapman that the form 

 hisjxina and the violet-blue form are geological varieties, or 

 at any rate that they occur on different formations, Mspana 

 being confined to limestone, whilst I only observed the violet- 

 blue forms on metamorphic strata in the neighbourhood of 

 the village of Noguera, some fifteen miles from Albarracin, 

 with the exception of a single somewhat worn specimen, 

 captured flying wildly in the Guadalavier Gorge, some two 

 miles below Albarracin. 



"The hills immediately in the vicinity of the town are 

 limestone, and here, except for the before-mentioned violet- 

 blue example, the corydon netted, probably some two hundred 

 in number, were var. hispana, with one or two per cent, of the 

 type form. 



"There is a path leading up the hills to the south of the 

 town, towards a farm known as Losillo ; here the I'ock forma- 

 tion is a deep red sandstone, but there is here also in places 

 an outcrop of limestone. 



"The corydon were still var. hisjxina with type specimens. 



