TWO INSECTS AFFECTING WHEAT AND BAELEY CROPS. 329 



Austin, the dipterist at the Natural History Museum, who searched out 

 the true name, viz. Clinodiplosis equestris of Wagner, whose figure 

 of the injured stalk agreed in every point with my photograph. 



I(i appears that Wagner obtained his first specimens in 1865 from 

 Fulga, Cassel, Germany, but it has not been much heard of since 

 that date. 



Being anxious to learn as much as possible of this extraordinary 

 pest, I determined to visit the infected district at Tenby. On June 12 

 Mr. and Miss Mainland visited the field and observed a vast number 

 of midge-like flies swarming in the ridge (the field having been plouglied 

 and potatos planted). 



Fig. 119. — Ear and part of Barley Stalk injured by the grubs (in 

 situ) of the "Tenby Wheat Pest," Clinodiplosis equestris, 

 Wagner. (Natural size.) 



A high wind was blowing, making the capture of specimens a very 

 difficult matter; however, a male and two females were caught and 

 sent on to me. I recognized the similarity of colour on the abdomen 

 of the female, but could not say positively that these flies had emerged 

 from the red pupse, though I thought they had. Nothing more was 

 seen of this great multitude of flies. 



On July 9 I went down to Tenby, where by the kindness and with 

 the guidance of Mr. Mainland, as well as the courtesy of the occupier 

 of the field, I obtained a good supply of the larvae by simply using my 

 fingers to dig them up, cheir bright red colour making them very 

 conspicuous objects in the sunshine. 



I also swept up a number of the females from out of the rank grass 

 and herbage growing around the field and hedges. 



