BRITISH GALLS 
190 
Homop- 
tera 
Coleop- 
tera 
Diptera 
99 
Coleop- 
tera 
Diptera (j 
Coleop- 
tera 
Leaf margin rolled upwards. 
Houard, No. 2739. 
See No. 410. 
Aphis brassicae Linn. 399 
Sisymbrium officinale Scop. 111. Hedge Mustard. 
Seed-pod swollen. 
Ceuthorrhynchus assimilis Payk. 400 
Connold, Plant Galls, p. 245. Ormerod, p. 156. 
Unilocular ovoid swelling, 7 to 8 mm. long, 4 mm. in 
diameter, on the petiole or the midrib, dull green, axial, 
sometimes lateral. M. E. 
Ceuthorrhynchus chalybaeus Germar 401 
Houard, No. 2522. 
Fleshy excrescences each about the size of a pea, at the 
base of the stem. 
Ceuthorrhynchus pleurostigma Marsh 402 
Houard, No. 2519. 
Inflorescence deformed; the flower-stalks swollen, 
forming a fleshy or spongy mass, from which the crowded 
seed-pods arise in a peculiar spicate manner. Larvae 
gregarious, white. M. E. 
CONTARINIA RUDERALIS Kieffer 403 
Houard, No. 2516. 
Inflorescence deformed. See Nos. 382, 383. 
Dasyneura sisymbrii Schrank 404 
Connold, Veg. Galls, pi. 29; Plant Galls, fig. 160. 
Houard, No. 2517. 
Sisybrium Sophia Linn. 64. Flix-weed. 
Root swollen at its apex. See No. 402. 
Ceuthorrhynchus pleurostigma Marsh 405 
Houard, No. 2539. 
Inflorescence deformed. June to November. See 
Nos. 382, 383. 
Dasyneura sisymbrii Sch. 406 
Houard, No. 2538. 
Erysimum cheiranthoides Linn. 38. Treacle Mus¬ 
tard. 
Root swollen at the junction with stem. See No. 402. 
Ceuthorrhynchus pleurostigma Marsh 407 
Houard, No. 2716. 
