1895.] GREAT OX GADFLY 135 



pleasure in its survey. I noticed the set of the wings, and 

 perhaps I can get a figure. 



When the flies are more plentiful, so that it would not 

 give you too much trouble to secure some, I certainly 

 should like two or three very much, but please do not let 

 me intrude too much on your good nature and time. I 

 will write again presently to say how I am getting on with 



Fly, with wings expanded ; also viewed sideways. 

 Larva and pupa, after De Geer. 



FIG. 19. GREAT OX GADFLY, TABANUS BOVINUS, LINN. 



the leaflet, but I did not like to delay thanking you heartily 

 longer than I could. 



May 10, 1895. 



I am very greatly obliged to you for all the information 

 in your letter, and also for the four live and hearty flies. 

 These have been very valuable to me, and I cannot help 

 thinking I have discovered a point not previously observed 



