240 THE ENTOMOLOGIST. 
I only discovered this gall a few weeks since; and have not, 
as yet, reared the gall-maker: it, no doubt, escapes late in 
autumn or in early spring. 
[The insects produced were Isosoma hyalipennis of Walker 
and Bracon tenuicornis of Wesmael.] 
No. 3. From boat-shaped galls, on the leaves of Prunus 
spinosus: in one of these I detected the dead larva of a 
Cecidomyia(?) ; the live ones had, no doubt, gone to earth to 
undergo their final change. 
[Callimome macropterus of Walker was reared by Mr. 
Moncreaff from boat-shaped galls, on Prunus spinosus, pro- 
bably made by a Cecidomyia. | 
I have also reared out of the galls on Plantago maritima, 
Baris laticollis; from galls of Plantago lanceolata, Mecinus 
pyraster; from root-galls (?) of Sisymbrium officinale, Baris 
(?): there are hymenopterous parasites on all these to 
come out. 
I send you specimens of the imbricated galls of the couch- 
grass, and galls of Plantago maritima. I shall be obliged if 
you will authenticate the species of grass for me, for | think 
that, if l am correct in the species (Triticum repens), it will 
eventually turn out that the galls exhibited at the meeting of 
the Entomological Society (from Ammophila arundinacea, 
collected by Mr. J. Traill, at Aberdeen) are made by the 
same species of gall-fly; and I do not think it is bkely it 
would choose different grasses. 
[The grass is Triticum repens.—Z. N.] 
Life-history of Mixodia Hawkerana.— The north-west 
corner of Hayling Island is a low-lying sandy flat, relieved 
at its western extremity by a few rather elevated sand-hills ; 
and here, besides many other plants of great interest to the 
botanist, grows the sea-spurge (Euphorbia paralias) in great 
profusion. A space of about a mile in length and of varying 
breadth is thickly and most luxuriantly covered with it, 
although it grows in the bare sand. It is shunned by all 
animals, for the intense acrid juices render it totally unfit for 
food; and as its flowers produce no honey it is equally 
deserted by the Hymenoptera. I have for several years 
carefully searched among these plants for the larva of 
