NOTES ON NEW AND RARE BRITISH LEPIDOPTERA. 131 



the wind-borne track of an unimpregnated '^ calling" female, 

 any one who has witnessed the congregating of the males 

 of Endromis, Satuimia, JBonihyx, Orgtjia, and others in 

 equal or less degree, can have no shade of doubt— so that 

 thus " breeding in," as it is called, may to a great extent be 

 obviated, and a vigorous breed kept up, though not to the 

 exclusion of occasional variation within certain limits, but 

 certainly without any general tendency to stable variation 

 such as may be observed in isolated colonies of species which 

 do not enjoy the invigorating privilege of wide-spread al- 

 liances. These latter might, and probably would, in course 

 of time degenerate (?) into whatever races within their scope 

 of variation were best adapted to the exigencies of their 

 surroundings. 



NoNAGRiA EXTREMA, Hiibner, versus Tapinostola 

 BoNDii, mihi. 



On the first of January, 1866, my good friend Mr. 

 Doubleday acquainted me with the fact that Dr. Staudinger 

 had written to him expressing bis conviction that T. Bonclii 

 was the true extrema of Hiibner. I had much rather that 

 any one else than I had taken up the pen in defence of the 

 insect which at present bears the respected name of mv 

 friend Frederick Bond; for, interesting as it would un- 

 doubtedly be should Bonclii eventually prove to be the lost 

 extrema of Hiibner, I confess that, for my friend's sake, it 

 would cause me much pain to see the name oi Bonclii sunk 

 into oblivion ; and I therefore, though reluctantly, place the 

 following evidence before the readers of the '* Annual." 



On the 9th of February, Mr. Doubleday wrote to me 

 as follows — " / do not think I ever sent Dr. Herrich- 

 *' Schciffer Bondii, but I sent two or three specimens of 

 ** concolor to him, and I think he said that he had never 



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