ERRATA. 



At p. 18, line 11, in " Nuthatchers" deleter. 



At p. 26, 6th line from the bottom, for " These processes do," read This process does. 



At p. 85, in 4th line of note, for . substitute , 



At p. 93, 3d line from the top, read The skeleton in PI. I, is reduced to one fourth ; the other 



objects are generally represented of half the natural size. 

 At p. 129, line 2, for " always," read generally. 

 At p. 130, line 16, for " Phasianinae," read Gallinae. 

 At p. 296, line 20, delete " other." 



At p. 305, for " Crucirostra " read Loxia, and for " Loxia " read Coccothraustes. 

 At p. 310, for •• more proportionally," read proportionally more. 

 At p. 332, line 4, for " Grosbeaks" read Linnets. 

 At p. 402, Une 7, delete " in a field." 

 At p. 439. Fig. 77, the foot of the Snowflake, is misplaced. 



