1S7.0.] 



87 



April Dill. — Wind west, and very stormy ; dull juctrniiig ; wont to 

 Hampstead Heath ; was on tlie ground at ten o'clock ; the rain soon 

 came on ; I noticed numbers of MeVoe on the march ; at eleven o'clock 

 the sun shone out, and very soon I saw a bee, but it was carried away 

 by the strong wind ; soon after I caught one, examined it, and found 

 it was stylopized ; a second and a third taken wei'e also stylopized. 

 I took' two or three more, and then the rain came down again, which 

 put a stop to my work ; it continued to rain till half-past eleven, when 

 the sun again shone out ; when the bees again appeared. I caught 

 numbers up to half -past twelve, when I left the heath, having taken 

 thirty-six specimens of Andrena atriceps. Ten were stylopized, as 

 follows : — 



1 ? Andrena containing 2 $ Stylops 



4 $ „ „ 1 ? „ each. 



2 c? „ „ 2 ? 

 1 (?, „ » 3 ? 



■" O V )' -'■ O 



April 6th. — A\'ind S.W. ; warn^ morning 

 at half-past nine : the first bee I caught had a female Stylops. The 

 sun shone from ten to half-past eleven, during which time Andrena 

 atriceps was very active ; I took a considerable number with my net. 

 At half-past eleven the sun went in, when I took the bees resting on 

 the ground ; at a little before half-past eleven I saw something flying 

 in a very peculiar manner over a broom-bush ; I captured it with my 

 net ; it proved to be a male of Stylops. I think I should now know a 

 Stylops on the wing the moment I saw it, its flight is different to any- 

 thing else I have ever seen ; a very peculiar unsteady flight, something 

 like an Ephemern, what I should call an uncomfortable flight, up and 

 down, this way and that way, in fact at all angles, not keeping in one 

 direction more than a few inches, perhaps for about six or seven. 

 My captures were as follows : — 



arrived at the Heath 



Bees. 



? 

 <? 

 <? 

 <? 

 (? 

 (? 

 S 

 3 

 <? 



? 

 (? 

 <? 

 (? 

 (? 

 <? 

 <? 



i 



stylops. 



Time. 

 9.30. 



9.40. 



9.45. 



10.0. 



10.10. 

 10."l5. 



11.0. 



Bees. 

 S 



i 

 s 

 (J 



<? 

 <? 



cT 

 ? 

 <? 

 <? 

 $ 

 <? 

 $ 



36 



Stylops. 



? 

 ? 

 ? 



9 

 ? 



27 



Time. 

 11.5. 

 11.30. 



Il!l5. 



11.50. 



12.0. 



12.15. 



12.20. 



12.30. 



