NEW AND RARE BRITISH CECIDOMYDIiE. 



207 



grasses, the seeds of various plants, or the cones of coniferous trees, 

 etc. A few have been proved to be psedogenetic. 



Unless otherwise stated the species are additions to the British 

 fauna. 



Janetiella sp. 



On thyme ; gall like that of J. ihymi, but produced distally in the 

 form of a beak, the outside weakly pilose, but the lip inside, distinctly 

 pilose. 



Durham, Stanhope and Penshaw Hill, J.W.H.H. 



Macrolabis marteli, Kieff. 



On Blip eric urn hirsutum. 



Durham, Middleton-one-Eow, J.W.H.H. Previously known from 

 France on R. perforatum. 



Arnoldia sp. Houard, 1212. 



On Qiierciis pubescens. 



Durham, West Cornforth, J.W.H.H. 



Perrisia aiicupariae, Kieff. = Houard, 2907. 

 Flowers of Mountain Ash {Surbits aucuparia). 

 Durham, Gibside, R.S.B. 

 Northumberland, Ovingham, R.S.B. 

 Scotland, North Berwick, R.S.B. 



Perrisia acercrispans, Kieff. 

 On Sycamore. 

 Durham, in a dene near Fencehouses, on one tree only, R.S.B. 



Perrisia loti, Kieff. = Houard, 3622. 



Leaflet of Lotus corniculatiis folded in the form of a pod. 

 Durham, Gibside, apparently rare, but I have recollections of having 

 seen the gall before, R.S.B. 



Perrisia sp. 



The following is a fuller description of the species found on Pimpi- 

 nella saxifraga, Penshaw Hill : — Leaflets folded, more or less thickened, 

 more noticeable in the younger ones, which are also discolored, rang- 

 ing from yellow to red. Larva white to creamish-white, gregarious. 

 R.S.B. 



Perrisia rhododendri, Kieff. 



On Rhododendron ferriif/inetim in a moraine garden at Linthorpe, 

 near Middlesbrough. 



Perrisia sp. Houard, 3776. 



On Lathyrns pratensis. 



Leaflets strongly hypertrophied, thickened and coriaceous, folded 

 in the form of a pod. Larva white. 

 Durham, Fatfield, R.S.B. 



Asphondylia ononidis, F. Loew. 



On Ononis repens. 



Northumberland (Vice-county 68), Warkworth, R.S.B. 



Durham, on the coast between Horden and Hart, R.S.B. 



