47 6 



MY GARDEN. 



be inserted between them. They are of a peculiar light grass-green, 

 and there are very few years in which they do not infest my trees. 



Our peas are occasionally, but not often, attacked by the Pea 

 Aphis (Siphonopkora pisi, fig. 1051). In. some years, in other localities, 

 I have seen it in large quantities, and one year a vast colony alighted 

 in all the open courts of the Bank of England. It is a large handsome 

 species, with long legs, long antennae, and long joints to the legs. 



FIG. 1050. Plum Aphis, magnified. 



FIG. 1052. American Blight, 

 magnified. 



FIG. 1051. Pea Aphis, magnified. 



One of the more remarkable aphides, which attacks two or three 

 out of my large collection of apple-trees, is the American Blight 

 (Schizoneura lanuginosa, fig. 1052). It lives upon the stems of the 

 apple-trees, and \vhen crushed stains linen like the cochineal : I 

 remember it ever since I was a child, because I incurred the wrath of 



my nurse by staining my pinafores with its 

 blood. It was supposed to have been im- 

 ported from America, but Harris considers 

 that it was introduced to America on fruit- 

 trees from Europe. It is reputed to live on 

 the roots as well as on the stems, but I have 

 not myself verified this. It is very injurious 



FIG. 1053. Currant-leaf with Aphides, to the treCS. 



I cannot undertake to describe all the aphides which frequent my 

 garden. Some years, as in 1871, the currant-trees round London 

 were severely injured by the Currant Aphis, which lives on the under 

 side of the leaves and causes them to pucker (fig. 1053). Many 



