vlll 
and he thought it probable they represented the ordinary condition of the 
species on either side of that mountain-pass. 
Mr. Albert Miller communicated the following notes on a Cecidomyia, 
causing galls upon Campanula rotundifolia :— 
“Mr. James W. H. Traill, of Old Aberdeen, has sent to me several 
specimens of Campanula rotundifolia, Linné, gathered by him in August 
last on exposed braes, two or three miles to the north of that city, 
which specimens are infested by the larve of a Cecidomyia. They occur 
both in the seed-vessels and in green, small, globular, monothalamous 
axillary galls, developed from buds. On some shoots almost every bud is 
appropriated by the gall, and one specimen presents a terminal cluster of 
them. Mr. Traill has suggested to me that the galls are, probably, 
abortive flower-buds, and I am inclined to concur in his opinion, owing to 
the presence of the larvee in the seed capsules as well. One of the latter 
disclosed an immense number of unripe seeds, each one tenanted by the 
very young oval larva, the smallest quite white; older ones 1 millim. in 
length, flattened, the centre of the body longitudinally purple-red, the 
remaining parts almost transparent. At this stage the larvee looked very 
pretty in the seeds, of which they had consumed the contents, presenting 
the appearance of living rubies, cased in flat capsules of transparent horn. 
Adult Jarve—taken singly from the galls, and in number from the seed 
capsules—were 3 millim. in length, 14-jointed, elongated, reddish, with 
darker intestine; their first segment very slender, beak-like. In the full 
grown state they were lively ; but in the earlier stages they appeared rather 
sluggish. I regret that mildew killed the whole brood; but I hope, with 
Mr. Traill’s kind assistance, to rear the perfect insect this season. In the 
meantime I propose for it the name of C. Campanule, as its peculiar mode 
of life warrants my considering it a new species, distinct from all those 
whose economy is known to me.” 
Papers read, dc. 
Dr. Sharp communicated “ Notes on some British species of Oxypoda.” 
After remarking upon the extreme state of confusion that existed respecting 
the species of this genus, Dr. Sharp proceeded to critical notes upon most of 
the previously recorded British species, and described four as probably new 
to science, viz. O. petita, hitherto confused with O. cunicularia, Hr., 
generally distributed in England and Scotland; O. edinensis, from near 
Edinburgh; O. verecunda, from near London and in the fens; and 
O. tarda, from salt-marshes near Dumfries. 
Mr. Lowne (who was present as a visitor) read, “ Observations on 
immature sexuality and alternate generation in insects.” The author 
thought that species originated occasionally from the maturity of the sexual 
organs before the acquirement of the adult characters. He had been 
