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 raariliraa, 

 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 maritime. I shall be obliged it 

 you will authenticate the species of grass for me, for 1 think 

 that, if I 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 likely it 

 would choose different grasses. 



[The grass is Triticum repens. — E. A^.] 



Life-liislory of Mixodia Hawkerana. — The north-west 

 corner of Hayling Island is a low-l}ing 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 llymenoptera. 1 have for several years 

 carefully searched among these plants for the larva of 



