104 [May, 



the erect, perpendicular bristles are blackish, in the apical fifth light brass- 

 yellow : in the imdenudecl wing the veiiia are only recognizable by the 

 longitudinal series of bristles along them, but they themselves are quite 

 indistinct. Length : body (of dried insectl ca. 2^ mm.; front wing, 1| mm.; 

 antenna, ca. 3 mm. ; hind tibia, 2 mm. 



ITab. Crowborough, Sussex : in a house, October 1st, 1921, four 

 specimens {F. J. 11. Jenhinson). 



Two cofypcs in the author's collection : also one example in the 

 British Museum and one in Cambridge University Museum. 



[Dr. Jenkinson states that he only saw the four exam])les which were 

 cajjtured : one was found among some clothes which had lain overnight 

 in a bedroom, another was on a table in another room, and he cannot 

 recall exactly in what part of the house the remaining two were taken. 

 The house had been occupied only just twelve months. The occurrence 

 of various species of Psocids, both fully-winged and flightless, inside 

 houses, has been frequenth' observed. It is mentioned, for instance, by 

 E. E. Green in his supplementary^ note to Dr. Enderlein's important 

 paper on the scaly-winged Copeognatha of Ceylon, Spolta Zeylanica, 

 iv. 1906, p. 123. Sometimes certain species are present in very great 

 numbers, forming veritable swarms on the ceilings and walls of rooms : 

 the occurrence of such a swarm (comjjosedof two winged British species) 

 in a quite new house at Cambridge is recorded in Ent. Mo. Mag. 1916, 

 p. 20. — Hugh Scott]. 



A NEW FUNGUS-FEEDING GALL-MIDGE. 

 BY F. W. EDWAKDS, F.E.S. 



The remarkable insect to be described below was first obtained in 

 the larval state in Yerdly Wood, North Sussex (a few miles south of 

 Haslemere), in the summer of 1921 by Mr. J. liamsbottom of the 

 Botanical Department of the British Museum, who was collecting 

 with Mr. E. E. Green at the time. Mr. Green at the first glance took 

 them for Coccidae, but soon discovered them to be CecidomyUdae and 

 passed them on to me. Subsequently I myself found some dead pupae 

 in a wood at Datchworth, Herts. Probably therefore the sj)ecies, though 

 hitherto overlooked, is widely distributed in suitable localities. 



The habitat of the larva is in a bark-encrusting fungus which 

 Mr. Kamsbottom has determined as a species of Hypochnus, probably 

 S. fuscus. Small, more or less circular, blister-like swellings are formed 

 on the surface of the fungus ; the swellings are about 2 mm. in diameter 



