CATALOGUE OF BRITISH PLANT-GALLS 147 



Hymen- 

 optera 



Lepidop- 

 tera 



Diptera 



Hymen- 

 optera 



Saliz viminalis Linn. 88. Common Osier. 

 Margin of the leaf turned towards the lower surface and 

 slightly rolled. 



PONTANIA SCOTASPIS Foerster 118 

 Houard, No. 753. 



Fusiform swelling on the stem, 8 to 20 mm. long, with 

 a large cavity in the woody tissue containing a caterpillar 

 with brown head and black eyes. M. G. II. 



Cryptocampus ATER Jiirine 119 



Inchbald, 1864, p. 47. Houard, No. 741. 



Leaf margin rolled loosely inwards. See No. 87. 



Pontania leucosticta Hartig 1 20 

 Cameron, ii., p. 189. Houard, No. 752. 



Fusiform swellings on the older branches. See No. 115. 



Grapholitha Servilleana Dup. 121 

 Houard, No. 744. 



Stem more or less swollen. See No. 94. 



Rhabdophaga saliciperda Duf. 122 

 MacDougall, Journ. Bd. Agric, Oct., 1905^ Houard, 

 No. 745. 



Leaf margin rolled inwards. See No. 93. 



Perrisia marginemtorquens Winn. 123 

 Connold, Veg. Galls, pi. 81 ; Plant Galls, fig. 234. 

 Houard, No. 749. 



Fusiform swellings on one-year twigs. See No. 95. 



Rhabdophaga salicis Sch. 124 

 MacDougall Journ. Bd. Agric, Oct., 1905. Houard, 

 No. 747. 



Saliz caprea Linn. 106. Goat Willow. 



An ovoid or spherical swelling, about 5 mm. in dianieter, 

 on the under surface of the leaf; green, yellow, or whitish, 

 sometimes tinted red, covered with white hairs. Its 

 presence is shown on the upper surface by a rounded 

 yellowish-brown spot bordered with red, or sometimes 

 entirely red. Solitary or gregarious. Larva solitary. 



(Plate IL 4.) „ „ . 



Pontania pedunculi Hartig 125 



Syn. ace. to Houard, Nematus curticomis Cameron, 

 N. bellus Zaddach, N. baccarum Cameron. 



Cameron, ii„ pp. 198, 201 ; i., pi. 5, fig. 9. Connold, 

 Veg. Galls, pi. no; Plant Galls, fig. 273. Houard, 

 No. 815. 



Bean-like swelling on the leaf. See No. 90. Cameron 

 observes that on S. capraea these galls are " somewhat 



