. A history of the birds of Europe, not observed in the British Isles . re will be found some valuable remarks fromMr. Newton and Mr. Wheelwright about the Parushorealis, De Selys, and its presumed distinctness fromour Marsh Tit, P. palastris. It has been suggestedto me that I should take the opportunity of giving afigure of it in this part of my work. As I havesome fine specimens, sent me by Mr. Wheelwright, Ihave much pleasure in doing so. At first sight it would be difficult for anyone whohad not seen much of the northern race, to find anyreal distinction between the two birds; but Mr. Whee
. A history of the birds of Europe, not observed in the British Isles . re will be found some valuable remarks fromMr. Newton and Mr. Wheelwright about the Parushorealis, De Selys, and its presumed distinctness fromour Marsh Tit, P. palastris. It has been suggestedto me that I should take the opportunity of giving afigure of it in this part of my work. As I havesome fine specimens, sent me by Mr. Wheelwright, Ihave much pleasure in doing so. At first sight it would be difficult for anyone whohad not seen much of the northern race, to find anyreal distinction between the two birds; but Mr. Wheel-wright has given several points in which they constantlydiffer; and it will be found by the following letter,from the celebrated ornithologist, Lilljcborg, that theseare not only constant, but, as he expresses it, are asmarked as ths differences between several other birdsof acknowledged specific distinction. Extract of letter from Lilljeborg to Professor Ham-macren, of Carlstad:—Although P. horealis comes verynear to P. palusfris, still I reckon them as distinct. N r, H T NORTHERN TIT. 215 species, because I think I have always fouml a constantdifference between them, both in structure and the exception of tlie immature dress, I havealways found a difference in the appearance of theblack colour on the head, the white on the cheeks,the grey brown on the back, as well as the broadwhite edges on the wing feathers. Since I have ob-served this, I can, at a tolerably long distance,distinguish P. horcalis by the white colour of thecheeks, which extends far back; and other naturalistswho have been with me on excursions have done thesame. The black colour on the head of P. borealis Ihave always found different in the nearly total absenceof metallic gloss, whereas P. palustris has always thisdistinct. In the summer plumage I have found inpalustris the grey brown colour on the back darkerthan in borealis in the same dress, and I have alwaysfound the former wants the white
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