Hymenoptera 183 



Kirb., Osmia pilicarnis, Sm., 0. bicolor, Schk. Chrysis ignita, 

 Linn, is common, and G. viridula, Linn, has been seen nesting 

 in the wall of Swaffhafn Prior church. 



Of the parasites, 58 belong to the Ichneumonidae and 

 include such things as Dinotomus lapidator, Fab., which I 

 recently brought forward as British ; Ichneumon dispar, Poda, 

 from Whittlesea by Curtis; the rare /. lactatorius, Desv., of 

 which I found a specimen in the British Museum from the 

 same locality ; the fine /. primatorius, Forst., from Chatteris 

 and Ely; and Amblyteles microcephalies, Steph., which appears 

 to be quite unknown on the Continent and very rare in Britain. 

 Jenyns bred Cryptus ornatus, Grav. from Odonestis potatoria 

 in 1825, and Donisthorpe has sent me Aptesis nigrocincta, 

 Grav. from an ant's nest at Wicken. Several species were 

 first found here in Britain, such as Ophion distans, Thorns., 

 Sagaritis punctata, Bridg., three Mesochori, &c. Thornhill 

 has sent Meniscus setosus, Fourc. from Boxworth, and I have 

 found Xylonomus pilicornis, Grav. at Wicken. Only seven 

 species, including a Bracon epitriptus, Marsh., which I found 

 at Wicken, of Bmconidae are recorded, and the Oxyura and 

 Chalcids fare worse with but two apiece, the latter being Epi- 

 copterus choreiformis, taken by Westwood at Gogmagog Hills, 

 and Cerapterocerus mirabilis, Westw., from Cambridge ; the 

 Evaniidae is represented by Foenus assectator, Linn., which 

 Thornhill has found at Boxworth, and which, with a great 

 number of unnoticed species, is probably quite common. 



