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and irregular, and though there is little serious climbing to be 

 done there is a good deal of up and down hill when any con- 

 siderable distances have to be covered. Spain in July suggests 

 great heat, leading to complete collapse if not sunstroke. We 

 experienced nothing of this sort. Certainly it was hot, 

 oppressively hot occasionally, as when we faced a white 

 dusty road at two or three o'clock in the afternoon, but not 

 so oppressive, even then, as in many a Swiss valley, and on 

 not a few July days in England. The elevation of over 3000 

 feet no doubt afforded some relief, but unquestionably the 

 alleviation arose chiefly from the great dryness of the air. It 

 really was hot, and cutaneous transpiration was most abundant, 

 as evidenced by an almost insatiable thirst ; yet we felt fairly 

 comfortable, and experienced little or no obvious perspiration 

 even at mid-day, when Satyrus prieuri did not care to fly and 

 sought shelter at once in the shadow of some shrub or bush. 

 Almost invariable fine weather is a great point in favour of 

 a holiday in Castile, and that this was no accident favourable 

 to us, but the rule, is clear from the native methods of harvest- 

 ing and thrashing their corn, which presume a rainless period 

 throughout July and August at least. I do not think we 

 added many new butterflies to Mrs. NicholFs list. Zephyrus 

 quercus was taken at Tragacete, but this is in Castile, not in 

 Aragon. Augiades sylvanus was taken both at Albarracin and 

 Tragacete. Adopsea actseon was met with at Cuenca (Castile). 

 Adopsea linea seemed to be more abundant than A. lineola at 

 all stations. We found Lycaena hylas and its variety nivescens 

 on the same ground. The common form of L. corydon seemed to 

 be corydonius or near that variety; this was especially abundant 

 at Tragacete, and occurred at all other places. The very large 

 pale form hispana was the commonest at Albarracin, where 

 the corydonius form was rare, and at Cuenca, and was not seen 

 at Tragacete. Looking at these and other dimorphic forms 

 occurring here, one could not help questioning whether admetus 

 might not be a dimorphic form of damon. The former was often 

 abundant, the latter always rather scarce. The females however 

 have constant differences, and the general tone of colour and 

 arrangement of spots on the undersides seem abundantly 

 sufficient to satisfy one that they are definite species though 



