Reports to various Correspondents. 23 



Glyciphagus domesticus on Tortoises. 



The household mite Glyciphagus domesticus was sent by the Ilev. 

 J. Harvey Bloom, of Whitchurch Eectory, taken from domesticated 

 tortoises. This species is found in all manner of places, and may he 

 found on living creatures, but it is not their habitat. They are not 

 parasitic at all, and it is doubtful if they would do the tortoises any 

 harm, although they may cause some imtation if present in large 

 numbers. 



SUB-GEOUP B. ANIMALS WHICH CAUSE INJURY OR 

 DISEASE TO MAN'S VEGETABLE PLANTATIONS. 



Section I. 



Animals Injurious to Agriculture. 



ANIMALS INJURIOUS TO CEREAL CROPS. 

 The Gout Fly of Barley. 



{Chlurops twittojiifs, Meig.) 



Some specimens of this pest were sent by Professor John Percival, 

 Director of Reading College Agricultural Department, from Arthog, 

 Dolgelly, N. Wales, who stated that " every one plant in ten is 

 affected, and does not seem to be likely to send up ears." 



The pest proved to be the common Gout Fly, Gldorops tmiiiopus. 

 Certain differences in the place of pupation made it difficult to say at 

 first, hence the doubt as to species in the following report sent : — 



" The barley you send is attacked by one of the Gout Flies 

 {(Jliloropidse). 



" It is probably the Ribbon-Footed Corn Fly {Chlorops tseniopuH), 

 but, as a rule, that species pupates in the groove made by the larva, 

 and not as in the specimens you send between the sheathing leaf and 

 the damaged ear. It is a common pest all over the country, 

 especially on poor soil ; on chalk lands it is, as a rule, most 

 prominent. I think there is more than one species that does the 

 damage. 



" None of the plants as badly attacked as the ones you send will 



