130 CECIDOMYZID^E. 



The following Cetidomyia have also been noticed or described, 

 but I cannot with certainty refer them to any group or sub- 

 genus : 



C. pennicornis, Linn. On AristolocJiia Clematitis. 



C. longicornis, Linn. On Cnicus palustris. 



C. Verbasci, Fall. ; Leon Duf. ; Macq. On Verbascum Thapsus. 



C. cerealis, Suter ; Kollar. On Arena sativa. 



C. Pose, Pal. de Beauv. ; Bosc. On Poa trivialis. 



C. Bromi, Hammersch. On Bromus tectorum. 



C. nigra, Meig.; Hammersch. On Pyrus communis. 



C. Pini-maritimse ; Leon Duf. On Pinus maritima. 



C. Populi, Leon Duf. On Populus. 



C. Ericse, Leon Duf. On Erica Scoparia. 



C. fuscicollis, Meig. ; Bouche. On Artemisia campestris. 



C. Pyri, Bouche. On Pyrus communis. 



C. Hyperici, Crft On Hypericum perforatum and ^". humifttsum. 



C. scutellata, Jf^. ; -Sot'e. On PJiragmitis communis. 



C. saligna, ^aro^, Scot. Gard. iii. 47 (1854). Eosettes of the 

 leaves of 8. aurita and S. cinerea. 



C. (Uabdophaga) viminalis, Westw. In the pith of the willow. 



C. Tilise, Schr. On the lime-tree. 



In June the galls of Cecidomyia Tilice ? are not uncommon on 

 the young shoots growing from the stumps of lime-trees, by the 

 banks of the Wye, near Chepstow. They are round or oblong, 

 green on one side, bright red on the other ; some of them contain 

 more than twenty separate cells, each inhabited by one larva. 

 The latter is about one line of length, of a bright yellow colour, 

 and has the faculty of leaping like the larva of Piopkila. It is 

 full grown in the third week of June. 



C. Populia? Sckr. In galls on Populus tremula. 



C.? Sonchi, Bremi. On Sonchus oleraceus. 



C.? Leontodontis, Bremi. On Leontodon Taraxacum. 



C. sanguinea, Bremi. In galls on the root-leaves of Hieracium mu- 



rorum. % 



C. strobilina, Bremi. In excrescences on the leaves of Salix purpu- 



rea. 

 C. capitigena, Bremi. In knobs on the barren shoots of Euphorbia 



Cyparissias. 

 C. strumosa, Bremi. In swellings on the leaves of the shoots of 



Galeobdolon luteum. 



C. Stachydis, Bremi. In galls on Stachys sylvalica. 

 C. Onobrychidis, Bremi. On Onobrychis sativa. 

 C. Hosoe, Bremi. On Rosa canina. 



C. llanunculi, Bremi. On the leaves of Ranunculus bulbosus and Tri- 

 folium pratense. 



