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PROCEEDINGS OF SCIENTIFIC SOCIETIES. 427 
thoroughly saturated with vinegar, mustard, &c.; these larve afterwards 
pupated on the cork, and from these pup the enclosed flies were bred.” 
Mr. Fitch remarked that when this fly was exhibited at a previous meeting 
he thought a very ungeuial habitat was assigned to it (Proc. Ent. Soc. Lond. 
1877, p. xv; August, 1877), but one of which this exhibition was quite 
confirmatory. 
Mr. Fitch also exhibited the following galls :— 
(1) Galls of Cecidomyia foliorum, H. Loew, a species new to Britain, 
found near Grays, Essex, on 14th May last. These were small reddish 
galls on the leaves of Artemisia vulgaris. 
(2) Galls of Cecidomyia? n.s., which were greatly enlarged flowers of 
Galium Mollugo, found at Dorking on 16th July last. Dr. Franz Low 
found similar galls in Upper Austria, tenanted both by a Cecidomyia and a 
Diplosis larva, neither of which were identified, as the gall gnats were not 
bred (¢f. Verh. z.-b. Ges. Wien. xxvii. p. 35). 
(3) Galls of Cecidomyia? n.s. (thalictri, H. Loew), on the flowers and 
seeds of Thalictrum minus (fleruosum, Bab. Man.), found in some numbers 
a day or two ago by Dr. Power in Perthshire. Dr. Boswell had remarked 
that these galls were not uncommon on the Thalictrum, when growing 
inland, but curiously he could never find them on plants by the sea-side. 
The imago is unknown, but for a notice of the gall see Loew’s Dipt. Beit. 
pt. iv. p. 30. 
(4) A large woody gall on whitethorn picked that morning at Maldon, 
which Mr. Fitch considered to be quite new. It bore some resemblance to 
the woody sallow gall of Cecidomyia salicis, Schrank, specimens of which 
were exhibited for comparison. 
Mr. Fitch likewise exhibited the extraordinary monstrous pupa of 
Bombyx mori referred to in this month’s ‘ Entomologist’ (Entom. xiv. 198), 
and read some remarks from Mr. E. Kay-Robinson, who had reared the 
specimen. Messrs. Stainton, Eaton, Waterhouse, and others made some 
remarks on the exhibit, but no satisfactory explanation of the apparent 
monstrosity was forthcoming. Also some stems of Equisetum limosum, in 
which the larve of Dolerus palustris, Klg., were feeding; this being of 
peculiar interest from the facts that no other insect was known to feed on 
Equisetum, and the economy of but one species of Dolerus (D. hematodes, 
Schk.) was previously known, although there are about sixty European 
species, many of which are amongst our commonest sawflies. 
Mr. T. R. Billups exhibited the following six species of Ichneumonidae, 
new to Britain, which he had taken this year:—Pezomachus geochares, 
Forst., captured at Deal on April 18th; Pezomachus sxylochophilus, 
Forst., captured at Rainham, Essex, on July 11th; Limneria litoralis, 
Holmgr., captured at Woking, Surrey, on August lst; Monoblastus 
Jemoralis, Holmgr., captured at Peckham on May 27th; Lissonota linearis, 
