CATALOGUE OF BRITISH PLANT-GALLS 245 
Diptera 
Capitulum swollen. 
Dipteron sp. 832a 
A. Miiller, 1870^, p. 5; Fitch, 1879, P- 259. Houard, 
No. 5751. 
Artemisia Absinthium Linn. 74. Common Worm¬ 
wood. 
,, Twig swollen. 
OXYNA TESSELLATA H. Low 833 
Syn. Tephritis tessellata H. Low. 
Houard, No. 5765. 
Artemisia vulgaris Linn. no. Mugwort. 
,, Very small, ovoid pustules on all parts of the upper 
surface of the leaf. M. G. and M. E. Imago, escaping 
by an aperture on the superior surface. 
Rhopalomyia foliorum H. Low 834 
Syn. Cecidomia foliorum H. Low. 
Fitch, 1881, p. 22. Connold, Plant Galls, p. 132. 
Houard, No. 5824. 
Homop- Leaves deformed, thickened and folded downwards ; 
tera the terminal ones are bunched; bright red or golden- 
yellow. Aphis greyish-black with reddish eyes. 835 
Cryptosiphum artemisiae Pass. 836 
Connold, Plant Galls, pp. 132, 133. Houard, No. 5819, 
5825. 
Tussilago Farfara Linn. 112. Colt’s-foot. 
Fungi Slightly thickened, yellow spots on the leaves, often 
surrounded by a violet margin. Spores orange-yellow. 
June and July. 
Aecidial state of Puccinia poarum Nielsen 837 
Syn. Aecidiu?n compositarum Mart., var. Tussilaginis 
Persoon. 
Plowright, p. 168. 
Senecio vulgaris Linn. 112. Common Groundsel. 
Diptera Flower receptacle swollen, forming an ovoid gall con¬ 
taining numerous larvae. M. G. 
Urophora macrura H. L 5 w 838 
Connold, Plant Galls, p. 245. 
Senecio Jacobaea Linn. 112. Common Ragwort. 
Lepidop- Stem swollen. M. G. Imago, spring, I. 
tera Phalonia atricapitana Steph. 839 
Syn. Conchylis atricapitana Steph. 
Houard, No. 5868. 
