194 
BRITISH GALLS 
Coleop- 
tera 
5 J 
9 9 
9 ) 
Fungi 
Myce- 
tozoa 
each ; sometimes the interior is reduced by the larvae to a 
single large cavity. 
Ceuthorrhynchus contractus Marsh 437 
Connold, Plant Galls, fig. 241. Houard, No. 2505. 
This beetle also attacks the stems of Thlaspi fterfoliatum 
Linn, in Central Europe. 
Rounded swelling on the upper part of the root. 
Ceuthorrhynchus pleurostigma Marsh 438 
Houard, No. 2504. Also attacks Thlaspi fterfoliatum 
in Germany. 
Cakile maritima Scop. 64. Purple Sea-Rocket. 
Pea-like swelling in the lower part of the stem, below 
the cotyledons, resulting from hypertrophy of the bark 
containing the larval cavity. 
Ceuthorrhynchus pleurostigma Marsh 439 
Houard, No. 2543. 
Raphanus Raphanistrum Linn. hi. Wild Radish. 
Tumours on root. See No. 426. 
Ceuthorrhynchus assimilis Pay. 440 
Connold, Plant Galls, p. 202. 
Fleshy, unilocular pea-like galls on the roots, usually 
near the stem, sometimes larger and plurilocular, each 
cavity containing a white larva. M. E. 
Ceuthorrhynchus pleurostigma Marsh 441 
Houard, No. 2629. 
On the midrib of the leaf, or the petiole, an elongated 
fusiform swelling with a large axial cavity. Imago, 
June, I. 
Ceuthorrhynchus quadridens Panzer 442 
Houard, No. 2631. 
Swollen white patches on stem, leaves, etc. See 
No. 394. 
Cystopus candidus Lev. 443 
Massee, Textbook of Plant Diseases, p. 59. 
Tumours on the roots. See No. 381. 
Plasmodiophora brassica Wor. 444 
Massee, Textbook of Plant Diseases, p. 334. 
