256 THE ENTOMOLOGIST. 



lending itself very readily to the accumulation of/ facts concern- 

 ing the less studied insect orders. The records listed here are 

 those of the Aleurodidce, and whilst mainly the resjults of r^y 

 own work, they embody the notes on the same group made by 

 Mr. Baguall. Working as we do to suit one another it is 

 impossible in many cases to dissociate our capture^. 



Advantage is taken of this opportunity to indicate the correct 

 generic position of ' several of the species, which, up^ to the 

 present, have all been lumped under Aleurodes. 



Aleurochiton aceris, Geoffroj'. Found very abundantly by me 

 on Acer pseudoplatamis in the Swallowship Woods near Hexham, 

 Northumberland. The only previous northern record was my 

 own from Acer campestris at Gunnergate, N. Yorks. 



Aleurodes quercus, Signoret. The only previous occurrence 

 of this species in Britain with which I am acquainted is that of 

 the specimen I captured at Corbridge, Northumberland, in 1918. 

 This year I obtained it quite commonly from Quercus near 

 Birtley, Durham. 



Aleurodes spircece, Douglas. Seen by Mr. Bagnall in Surrey, 

 but detected by me for the first time in the northern counties at 

 Waldridge, Co. Durham. I took both imagines and ova from 

 Ulmaria pentapetala {Spinea ulmaria). 



Tetralicia erica, Harrison. Still, as far as I am concerned, 

 curiously localised in its old station, near Chester Moor, Co. 

 Durham, although a new colony has just been noted across the 

 burn. Recently taken and recorded by G. B. Walsh from 

 Skipwith Common in S. Yorks. 



Tetralicia vaccinii, Konow. New to the British fauna. An 

 imago boxed by myself and pupa cases noted by A. D. Peacock 

 on Vaccinium myrtillus at Chopwell form the sole Durham 

 records, whilst the occurrence of larvae on Vacciiiium oxycoccus 

 at Prestwick Carr to Mr. Bagnall provides the complementary 

 Northumberland locality. 



Asicrochiton avellance, Signoret. First noted by Mr. Bagnall 

 at Ovingham, Northumberland, and almost simultaneously by 

 myself. Subsequently we both found it ubiquitous on hazel in 

 the Derwent Valley, Co. Durham, whilst I detected it on the 

 same shrub at Bishopton, S. Durham. Larvae were common on 

 Corylus avellana at Chopwell on August 24th, 1920. New to the 

 north. 



Asterochiton carpini, Koch. I encountered this snowy fly 

 both in the perfect and in the egg state on Carpinus hetida at 

 Chopwell, Co. Durham ; likewise new to the north. 



Asterochiton Bagnalli, sp. n. Quite common ovipositing on 

 beech, at Ovingham. Very like A. avellana, but a little larger 

 and duller in colour. I reserve fuller descriptions until early 

 stages, other than ova, are available. 



Asterochiton, sp. Also resembles A. avellancs, but not more 



