FURTHER NOTES ON BRITISH PLANT GALLS. 83 



galls on one leaf. When young they are reddish in colour but turn 

 green later on. Oligotrophns Beaumurianus, F. Low. W. Glos., 

 June (L. B. Hall), (ii) Eriophyes tilice var. exilis, Nal. W. Glos. 

 (L. B. Hall). 



T. vulgaris, Hayne. — (i) Margins of leaves rolled tightly down- 

 wards forming a hairy cavity. Eriophyes, sp. W. Glos. (ii) E. 

 tilice, var. liosoma, Nal., recorded previously from Derbyshire, was 

 found in 1916 in West Glos. 



T. cordata, Mill. — (i) The common nail gall of E. tilicB, Pagnst., 

 was plentiful in both W. Glos. and Mon. Nearly all the galls were 

 l)right red or crimson in colour when observed on this species of 

 lime, while those on the common lime, T. vulgaris, Hayne, in the 

 same district were yellow or yellowish-green, (ii) E. tilice, var, 

 liosoma, Nal. W. Glos. and Mon. (iii) E. tilics, var. exilis, Nal. 

 W. Glos. (iv) E. tiliarius. Con. W. Glos. and Mon. (v) E. 

 tetratrichus, Nal. Eolling the margins of the leaves up. W. Glos. 

 and Mon. (vi) Contarinia tiliarum, Kieff. W. Glos. and Mon. 

 (vii) Perrisia tiliamvolvens, Kiibs. Mon. (viii) OUgotroplius Beau- 

 murianus, F. Low. Plentiful in August in the mature condition 

 in Mon., and also found in three places in W. Glos. (ix) Leaf 

 margins rolled tightly downwards, and the centre of the leaf in 

 places puckered into pits with the concavity on the under side 

 filled with short hairs. Eriophyes, sp. Possibly the same as 

 E. tetratrichus, Nal., above. W. Glos. and Mon. 



Euonyimis eiiropceus, Linn. — ^(i) Leaf margins rolled tightly by 

 Eriophyes convolvens, Nal. This species of mite which was recorded 

 in 1915 from Surrey was found in 1916 in four localities in Mon., 

 and is evidently well-established there, (ii) Aphis euonymi, Fabr. 

 W. Glos. 



Acer cavipestrc, Linn. — (i) Erioplii/es macrochelus, Nal., var. 

 erinea, Trotter. W. Glos. (ii) Terminal leaves aborted, rolled and 

 covered with short hairs. Eriophyes, sp. Mon. (iii) Leaves folded 

 like a fan. In the folds live orange-coloured larvae of Perrisicc 

 acercrispans, var. r^ibella, Kieff. Mon. (iv) Atrichosema aceris, 

 Kieff. Was found to be well-established in both W. Glos. and Mon. 



Medicago lupulina, Linn. Leaves folded into a loose pod con- 

 taining midge larvse. Perrisia, sp. W. Glos. 



Lotus corniculatus, Linn. — P. loticola, Eiibs. W. Glos., Mon., 

 and Herefd. 



Vicia sylvatica, Linn. — Leaflets not swollen, but folded face to 

 face, and enclosing a white midge larva. Cecidomyia, sp. Mon. 



Lathyrus pratensis, Linn. — Leaves slightly swollen with the^ 

 margins rolled upwards to meet each other forming a hollow pod, 

 slightly yellow in colour, containing midge pupa3, pale yellow 

 inclined to pink at the hinder end. Perrisia, sp. W. Glos. 



SpircECC ulmaria, Linn. — Slight concavities on the under side of 

 the leaves each containing a pale green larva of P. pustulajis, Eiibs.. 

 Previously recorded from Derbyshire, now noted from W. Glos. 

 and Mon. 



Bubus fruticosus, Linn. — DiastropJius rubi, Hartig., recorded 

 irom Bucks (J. Eoss) and Berks (E. B. Bishop) both localities being 

 at the foot of chalk hills. Two localities in Berks, one on greensand 



