246 BRITISH GALLS 



Diptera Capitulum slightly swollen, with a little cone covering 

 the larva. 



PHORBIA SENECIELLA Meade 840 

 Houard, No. 5863. 



„ Involucres greatly swollen, usually tinted red at the 



base. Larvae gregarious, yellowish-white, living amongst 

 the florets. M. E. 



Stictodiplosis jacobaea H. Low 841 

 Syn. Diplosis jacobaea H. L5w. 

 Houard, No. 5865. 



,, _ Capitulum greatly swollen, sometimes thrice the normal 



size ; ovoid, fleshy, remaining green. The orange-coloured 

 larvae occupy a cavity below the receptacle. 



Cecibomyia sp. 842 

 Trail, 1878. Houard, No. 5864. 



Fungi Elongated fusiform swellings on the petioles and mid- 



ribs, bearing the black sori with dark brown spores. 

 August to November. 



PUCCINIA GLOMERATA GreviUe 843 

 Connold, Plant Galls, fig. 253. 

 Plowright, Pi 209. 



Senecio aquaticuB Hill. in. Marsh Ragwort. 

 Lepidop- Stem swollen. 

 tera Platyptilia isodactyla Zell. 844 



Houard, No. 5861. 



Diptera Capitulum swollen. See No. 842. 

 Trail, 1878. Houard, No. 5858. 



Senecio Sarracenicus Linn. 

 Lepidop- Stem swollen. 



tera PLATYPTILIA ISODACTYLA Zell. 846 



Houard, No. 5851. 



Arctium majus Linn. 44. Common Burdock. 

 Diptera Seed capsules swollen and deformed. Larvae solitary 

 or gregarious. June to August M. G. 



Trypeta bardanae Schrank 847 

 Syn. Tephriiis bardanae Sch. 



Connold, Veg. Galls, pi. 124; Plant Galls, fig. 80. 

 Houard, No. 5891. 



Cnicus lanceolatus Will. 112. Spear Thistle. 

 „ Floral receptacle hypertrophied, gall hard, plurilocular. 



Trypeta jaceae Rob. Desr. 848 

 Houard, No. 5910. 



Cecidomvia sp. 84s 



