THE HYMENOPTERA OF 

 CAMBRIDGESHIRE. 



By CLAUDE MORLEY, F.E.S., &c. 



So far as I am aware no attempt has ever been made to 

 work up the Hymenoptera of Cambridgeshire since the Eev. 

 Leonard Jenyns collected here during 1824 1849; his col- 

 lection, named by Fred. Smith, is in the University Museum 

 at Cambridge, and it is from it that we must gather a general 

 idea of the bees, saw-flies and ichneumons of the county. As 

 long ago as 1797, the Rev. William Kirby traversed the fens, 

 and has left some account of the species he observed in his 

 Journal; and both Stephens and Curtis mention isolated 

 captures at Cambridge and Whittlesea Mere. To this ancient 

 and more or less unreliable material, I have only been able to 

 add a few records of the Parasitica by Bridgman in the Trans, 

 of the Entomological Society, 1882 89, and an occasional 

 mention by Saunders in his Aculeata of the British Islands, 

 1896. Several species have been sent to me thence by Cross, 

 Thornhill, Tuck, and Donisthorpe; and in 1902 I spent a 

 week at Wicken, but the weather was so inclement that but 

 few captures of even the commonest insects were effected. 



Altogether only 173 species appear to have been noted in 

 Cambridgeshire, and of these 35 appertain to the Saw-flies, 

 68 to the Aculeates, and 70 to the Parasites ; but many of the 

 older records must be received with due caution, especially 

 among the Tenthredinidae and Ichneumonidae. Of the former 

 Tenthredo solitaria, Scop., and T. maculata, Fourc. were taken 

 by Jenyns near Cambridge and at Wood Ditton respectively, 



