OF SF.LEORNE. 147 



LETTER XXXII. 



TO THE SAME, 



DEAR SIR ; Selborne, Oct. 29, 1770. 



After an ineffectual search in Liniiceus, 

 Brisson, &c. I begin to suspect that I discern 

 my brother's hirundo hyherna in Scopoli's 

 new-discovered hirundo rupestris, p. 167. 

 His description of ** Supra murinay subtus 

 *' albida ; rectrices tnaculd ovali albd in latere 

 *' interno) pedes nudiy nigri; rostrum7iigrum, 

 " remiges obscuriores qiiam jylumcB dorsales ; 

 ** rectrices remigibus concolores ; caudci 

 " emarginatd nee forcipata ; agrees very 

 well with the bird in question ; but when 

 he comes to advance that it is *' statura 

 hirundinis urbicce" and that *' ** dejinitio 

 hirundinis riparice Linncei huic quoque con- 

 ** venit*^ he in some measure invalidates all 

 he has said ; at least he shows at once that 

 he compares them to these species merely 

 from memory : for I have compared the 



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