( xxiv ) 



very closely allied. L. dolus, however, which Mr. A. H. Jones 

 met with abundantly this summer, and to whom I am indebted 

 for some examples, seems to occupy precisely the relation to 

 damon that nivescens does to hylas and that the vars. hispana 

 and albicans do to cor y don. The male appendages of the 

 three, damon, dolus, and admttus appear to be identical. I 

 may mention that Erebia zapateri first appeared on August 

 4th, even later than the date given by Mrs. Nicholl, July 29th. 

 Canon Zapater's earliest date being July 21st, this no doubt in 

 a very exceptionally early season. We did not meet with 

 Melanargia ines, but took a very worn specimen of syllius at 

 Ouenca. This species is not mentioned by Mrs. Nicholl. 

 Except M. ines, I believe we took all the species mentioned by 

 Mrs. Nicholl for which we were not too late. The dimorphism 

 of S. pj'ieuri is another instance of this phenomenon, which is 

 thus rather frequent amongst the butterflies of the district. 

 We found the alternative form of the female very frequent, 

 perhaps about one in four of the females seen. Like the 

 Lycdenidae, the two forms are without intermediate varieties, and 

 the nearest approach to such a form is a specimen I exhibit. 

 But we observed nothing to account for or to explain the use of 

 the colouring of uhagoni. It resembles very much the female 

 of semele, which is abundant on the same ground. But the 

 habits of flight of the two are very different, and we never in 

 fact mistook one for the other. The brown colour, which is no 

 doubt the original colour in the Satyridx, in this case is more 

 probably a reversion, but as to this I have no data for an opinion. 

 The Heterocera were not specially collected, but presented 

 many points of interest, such as the fine Orgyia splendida, with 

 its remarkable habits in pairing, the curious Endagria ulula, 

 Euchelia jacobxx, whose larval markings differed constantly 

 from those we are* familiar with, the irritating larva of 

 Albarracina horbi on Ephedra and many others. There is 

 however always an attraction about a large and showy species 

 if it only be somewhat rare, and so I may mention Graellsia 

 isabellse. This species appears to inhabit not only the whole 

 of the region we were in, but extends westwards beyond 

 Madrid. We met with it first at Tragacete, where Mr. 

 Champion got two larvae by beating, and afterwards more 



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