213 
M. granarium, Aby. On grasses 
millefolii, Fabr. On Achillea millefolium, common. 
jaceae, Lines. On Centaurea nigra, Carduus s 
lactucae, Schr. On Ribes. 
pelargonii, Aalt. On JJalva sp: Geranium robertianum. 
pisi, Kalt. On Lathyrus, Lotus. 
rosae, Linn. On roses, always to be found. 
. rosae, var. meng Buckt. Usually to be found along with 
the previous spec 
M. (Am plioFophota) rubi, Kalt. On Rubus spp. but scarce. 
M. rubiellum, Theo. This was the common Aphid on Rubus 
spp. in 1915. 
M. solanifolii, Ashm. This was found in numbers on potatoes 
being grown in the Gardens in 1919. It has a wide range of host 
plants and will probably be found on other plants when looked for. 
M. pan Linn. On Achillea millefolium, Centaurea, Chry- 
santhem 
M. Macrosiphoniella) sanborni, Gili. Found in one of the 
houses in 1915. It evidently does not survive out of doors in this 
country. 
M. urticae, Linn. On Urtica dioica. 
Drepanosiphum, Koch. 
D. platanoides, Schr. On Acer spp. common throughout the 
alatataataiat 
summer. 
Rhopalosiphum, Koch. 
R. berberidis, cent On Berberis spp. very common in 1915 
but not seen at all in 1919. 
R. persicae, Sule. Occurs on a very wide range of plan 
R. ligustri, Kalt. Apterous females found in “1919 on Tes. 
trum sp., but evidently very rare. 
Melanoxantherium. 
M. salicis, L. On twig of Salix Smithiana. H. St. J. Donis- 
thorpe. 
Siphocoryne, ? ; 
S. (Brevicoryne). breksione; Linn. On Brassica sp. growing 
ae 
ee cage capreae, Fabr. On willows, Heracleum, An- 
géliva, Aego 
Phorodon, Piss 
Sapmy ae Schr. On Prunus sp. 
Myzus, Pas 
M. cerasi, F abr. On Prunus cerasus, forming black clusters 
and a glutinous mass. 
. tibis, Linn. On Ribes spp- 
M. tetrarhodus, Walk. On roses, but, as far as our observa- 
tions go, very rare. 
’ is, Linn. 
A. (Myzaphis) abietina, Walk. On Spruce. J. W. Mun 
A. riba Walk. On Asters and Clee ansithanneal out 
of doo 
A. “edentila, Buckt. On Crataegus monogyna, rare. 
A. epilobii, Kalt. On Epilobtum sp., rare. hee “i 
A. hederae, Kalt. On Ivy and Holly, occasionally in numbers. 
