3626 



Insects, 



immense numbers, that were I to say they occurred under every stone, as applied to fields 

 in general, I speak strictly according to truth. July is not a favourable month to an 

 Hymenopterist ; the spring insects are past, and the autumnal ones have not made 

 their appearance : still, something may always be accomplished by diligent exertion. 

 I searched in great numbers of ants' nests in the hope of meeting with parasites, but 

 only met with a single species of Pselaphidae — Batrisus nigriventris, an exceedingly 

 rare insect, only three or four specimens having previously occurred in this country. 

 It is mentioned by Aube as an inhabitant of ants' nests. Earlier in the season T should 

 in all probability have been more successful. Of the rare Pompilus variegatus I cap- 

 tured eight specimens, one being a male ; this sex has not been previously taken in 

 this country. I also captured a species of Pompilus new to our Fauna ; it is allied to 

 P. gibbus, but very distinct. Another fossorial insect appeared to be plentiful, which 

 I had not previously captured in any locality, but have received several times from 

 Scotland, — the Crabro dimidiatus. The only bee of any rarity which I met with was 

 Andrena Coitana, but I was fortunate in observing both sexes enter the same burrow : 

 the female proves to be Andrena Shawella of Kirby, the female which I have before 

 described (Zool. 1919) being a variety of the same species. Bombus fragrans is not 

 uncommon near Wakefield, the district which I investigated ; and some of the com- 

 moner species abound in immense profusion, particularly B. lucorum. I have little 

 doubt that in a district so beautifully varied by woods, hills and valleys, many species 

 occur which do not appear in my list, which, for the sake of the locality, I subjoin : it 

 includes every species of Hymenopterous insect which I observed. 



Zarea fasciata 

 Tenthredo viridis 



arcuatus 

 Athalia spinarum 



Formica rufa 



nigra 



fuliginosa 



flava 

 Myrmica rubra 



laevinodis 



ruginodis 

 Myrmosa melanocephala 

 Sapyga 4-guttata 



clavicornis 

 Pompilus variegatus 



fuscus 



gibbus 



new species 



exaltatus 

 Nysson spinosus 

 Trypoxylon figulus 

 Crabro dimidiatus 



cribrarius 



patellatus 



Crabro vagus 



leucostoma 



elongatulus 



obliquus 



albilabris 

 Diodontus minutus 

 Passalsecus insignis 

 Pemphredon lugubris 

 C em onus unicolor 

 Gorytes mystaceus 

 Symmorphus elegans 

 Ancistrocerus parietinus 



3-marginatus 

 Odynerus spinipes 

 Vespa vulgaris 



Germanica 



rufa 



Norwegica 



arborea 

 Colletes Daviesana 

 Prosopis annulatus 

 Sphecodes gibbus 



subquadratus 

 Halictus rubicundus 



flavipes 



Halictus abdominalis 



albipes 

 Andrena albicrus 



Coitana 



varians 



Shawella 

 Megachile centuncularis 



circumcincta 

 Osmia bicornis 

 Nomada Fabriciana 



ochrostoma 



flavo-guttata 

 Ccelioxys 4-dentata 

 Chelostoma florisomne 

 Authophora retusa 

 Apathus campestris 



Barbutellus 

 Bombus muscorum 



senilis 



fragrans 



lucorum 



hoi tor um 



terrestris 



pratorum 



lapidarius 



— Frederick Smith ; August, 1852. 



