CATALOGUE OF BRITISH PLANT-GALLS 183 
CAROPHYLLACEAE 
Silene latifolia, Rendle and Britten (inflata Sm.). 
104. Bladder Campion. 
Homo )- Summit of the plant curiously distorted and bunched, 
tera Aphis greenish with black head ; mealy, cornicles very 
small, black. July and August. The aphides often 
crowd within the capsules. 
Hyalopterus melanocephalus Buckton 343 
Buckton, ii., 116. Houard, No. 2264. 
Silene acaulis Linn. 21. Cushion Pink. 
Diptera On the stem. Terminal internodes remaining closed ; 
leaves bunched very large and very thick, usually dis¬ 
coloured ; almost white towards the base, green at the 
apex. Larvae gregarious, rosy-red. M. E. 
Perrisia alpina F. Low 344 
Houard, No. 2274. 
Lychnis alba Miller. 103. White Campion. 
,, Flower buds swollen, not opening. Larvae gregarious, 
white or yellowish. M. E., ii. 
Contarinia Steini Karsch 345 
Houard, No. 2291. According to Collin (Ent. Mo. 
Mag., 1904, p. 96), this is apparently the insect of which 
the larvae and the galls caused thereby were described 
by Binnie in Proc. Glasgow N. H. Soc., 1876, p. 184 ; and 
the gall described by Barrett in Ent. Mo. Mag., 
1872, vol. viii., p. 205, would appear to be caused by 
the larvae of a different species, possibly Perrisia lych- 
nidis Heyd. 
Cerastium vulgatum Linn, (trivia/e Link). 112. 
Narrow-leaved Mouse-ear. 
># The two terminal leaves joined along their margins 
and slightly thickened, forming a cavity for the reddish 
larvae. Occasionally the buds are attacked and become 
swollen. M. G. Imago appears in August or in the 
following spring. 
Perrisia lotharingiae Kieffer 346 
Connold, Plant Galls, p. 95. Swanton, Knowledge, 347 
June, 1910. Houard, Nos. 2331, 2334. 
A mass of hairy reddish leaves at the extremity of a 
shoot with an oval cavity between them containing 
several orange-coloured larvae. M. G. 
Perrisia cerastii Binnie 348 
Syn. Cecidomyia cerastii Binnie. 
Connold, Plant Galls, p. 244. Houard, No. 2338. 
