LETTER XXXII. 



To the same. 



SELBORNE, October 2tyh, 1770. 

 EAR SIR, After an ineffectual search in 

 Linnaeus, Brisson, &c., I begin to suspect 

 that I discern my brother's hirundo hyberna 

 in Scopoli's new-discovered hirundo rupestris, 

 p. 167. His description of " Supra murina, 

 subtus albida ; rectrices macula ovali alba in 

 latere inferno ; pedes nudi, nigri; rostrum 

 nigrum ; remiges obscuriores quam p/nmcv dor sales; rectrices 

 remigibus concolores ; caudd emarginata, nee forcipatd ; " agrees 

 very well with the bird in question : but when he comes to 

 advance that it is " statura hirundinis urbicce" and that " de- 

 finitio hirundinis riparian Linncei huic quoque conven'itt," 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 birds themselves, 



