ADDITIONS ‘0 THE LIST OF BRITISH PLANT GALLS. 7 
and i-inch in diameter on stem. Hollow. Terminal leaves not 
affected. Caused by .-:.? 8b. 
Stachys palustris, Linn.—(i) Perrisia, sp. Buds galled by white 
larve. Dy. (ii) Perrisia stachydis, Bremi. Sy. 
Ulmus glabra, Huds.—Tetraneura ulmi, De Geer. St. 
Salix triandra, Linn.—(i) Pontania proxima, Lepel. Dy. 
(ii) Cryptocampus salicett, Fall. Dy. (iii) Oligotrophus capree, 
Winn. Dy. (iv) Perrisia marginem-torquens, Winn. Dy., St. 
(v) Rhabdophaga heterobia, H. Low. Dy., St. (vi) FR. rosaria, 
H. Low. Dy., St. Two other kinds of midge larve cause bud 
galls. Dy. 
S. fragilis, Linn.—(i) ? Cryptocampus testacerpes, Zadd. St., Sy. 
Sawfly larva, dove-grey in colour, forming gall on petiole or mid- 
rib of leaf. It is figured in Connold’s ‘ Plant Galls of Great Britain,’ 
fig. 314, without a name. (ii) Sawfly gall on petiole or midrib of 
leaf. Larva pale green with black head. Dy. (il) Rhabdophaga 
heterobia, H. Low. Dy. (iv) BR. rosarva, H. Low. Dy. (v) Hriophyes 
Marginal rolls. Dy. (vi) Hriophyes. Dr. Houard’s fig. 147. 
Sy., “Mx., E. This gall was described in the ‘Journal of Botany’ 
early last year by Mr. Miller Christy. Since then it seems to have 
spread very much along the towpath between Hammersmith and 
Kew, and has also appeared on the north-west side of London. 
S. alba, Li (i) Petiole gall, same species as no. (ii) on S. 
fragilis. Dy. (ii) Rhabdophaga nervorum, Kieff. Dy. (iii) Twig 
galls with midge larve, resembling Dr. Houard’s description of R. 
karschi, Kieff. Dy. 
_ 8S. purpurea, Linn.—(i) Cryptocampus salicett, Fall. Dy. (ii) 
Fthabdophaga heterobia, H. Low. Dy. 
S. veminalis, Linn.—Pontania proxima, Lepel. Dy. 
S. caprea, Linn.—(i) Rhabdophaga albipennis, Winn. Dy. (ii) 
fi. heterobia, H. Low. St. (iii) &. nervorum, Kieff. Y., Sy. 
S. caprea x cinerea. —(i) Pontania Bridgman, Cam. Dy. (ii) 
Cryptocampus salicett, Fall. Dy. 
S. aurita, Linn.—(i) Pontana proxima, Lepel. St. (ii) Olago- 
trophus capre@, Winn. St. (iii) Female catkins persisting, aborted, 
galled by midge larve. Dy. 
S. aurtta x cinera.—(i) Pontania proxima, Lepel. Dy. (ii) Same 
as no. (ili) on S. awrita. Dy. 
S. cinerea, Linn.—(i) Pontania Bridgmani, Cam. Dy., St. (ii) P. 
peduncult, Hartig. Y., Dy., Sy. (iii) P. salécts, Christy. St. (iv) 
Cryptocampus ater, Jurine. Dy. (v) C. salicett, Fall. Dy., St. 
(vi) C. venustus, Zadd. Dy. (vii) Oligotrophus capree, Winn. Dy., 
St. (vill) Lhabdophaga albipennis, Winn. Dy. (ix) &. nervorum, 
Kieff. Dy. (x) BR. saliciperda, Dufour. Dy., St. (xi) Hriophyes 
tetanothrix, Nal. Dy. There are three other kinds of galls on the 
twigs, and one on the petiole occupied by midge larve which I have 
not been able to identify. Dy., St. 
S. repens, Linn.—(i) Pontania salicis, Christy. Y.2. (ii) Rhab- 
dophaga rosariella, Kieff. Sy. (iii) R. salicis, Schrank. Y., Sy. 
S. alba, S. cinerea, S. fragilis, and S. purpurea leaves are all 
ey by sawfly larvee, but the species of insect has not been deter- 
mine 
