CAPTURE OF ATTACIvING TLY. xH 



one field where there was a thick open grove of oaks with a shed 

 beneath it, within and around which the herd sheltered themselves 

 and picked the hay which might be strewn about. — Ed. 



The following note refers to the above point, and likewise to 

 housinij at night, which may prove important relatively t) some of the 

 (EstridcB being exceedingly lively in the bright moonlight: — "I seldom 

 get any warbles in my own young cattle, and I think from this cause, 

 — that tJu'i/ have sheds to rim under during the summer, and are housed at 

 night, and have a good feed of cake," &c. — E. R. Berry Torr, West- 

 leigh House, Bideford. 



It would be useful if we could have more notes on the above heads, 

 for if water and tree protection are to be depended on as preventive of 

 attack something might often be done to give this to the cattle simply 

 by leaving gates open. It is not a question of making ponds, or 

 building sheds, or going into expenses, but in many cases of letting 

 the cattle have the benefit of what exists. 



The following communication gives an example of an animal who, 

 by special circumstances was feeding on tether where most of the herd 

 were house-fed in hot weather, broke his tether and came straight home 

 for protection on attack. Tlie Warble Fly itself is seldom captured, 

 but I was fortunate enough in the summer of 1887 to have two speci- 

 mens sent to me by Mr. W. S. Eichards, of Rathturret, Warrenpoint, 

 Co. Down, Ireland. The first was forwarded 

 on the 30th of June, with the observation : — 

 "It seems that when the cattle hear it in the 

 air they are off. It does not seem to do more 

 than rest on the cattle for less than a second. 

 My cows are docile ; I can stand near them 

 and watch. Bees ot ditlerent kmds they took no pig. 5^ p. 1 (repeated 



notice of, but knew the hum of this insect." On 1° ^ave trouble in re- 



iGrGncG) 

 the 17th of August Mr. Richards sent me the 



second very beautiful specimen, which was quite soft and uninjured 

 when I received it. From the downy appearance the insect looked 

 exceedingly like a good-sized bee (only with one instead of two pairs 

 of wings), and the black band across the body between the wings, with 

 a yellowish band before it, also the blackish band across the abdomen, 

 and orange colour at the tip showed well (see figure, p. 1). Mr. 

 Richards wrote accompanying, after alluding to my previous letter on 

 Ox Warble Fly. " We have been since trying to catch some more, 

 and, though we had several chases, only were able to get one this 



morning This one fiew at the legs and flanks of a young 



Guernsey bull ; he broke tether and came home, the fly still at him ; 

 we got them both All my cattle are on tethers, and house- 

 fed by day ia hot weather, excepting six before mentioned" (referred 



