146 [December, 



missed is gone in a second not to return again ; what it finds, except 

 the wood-lice which congregate in these places, I do not know, but I 

 caution those who want the insect not to remove the bark to 

 secure it, for that will not answer. It is not so much affected by the 

 sun as many of these insects usually are, and I have seen it quite late 

 of an evening after others have retired. 



Crahro clavipes, Linn., is found in the same places but it prefers 

 those stumps that are sounder, and whose bark does not show signs of 

 decay. 



Crahro gonager, Lep., is also a wood insect, and has either been 

 more plentiful, or we have discovered its habitat, for we have taken no 

 less than eleven females this season ; the middle of August is the time 

 it makes its appearance. 



Crahro V arms, JjB])., is not a wood insect, but occurs along the 

 field banks and burrows in the places where the clay has slipped, and in i 

 other bare patches, preferring the steep inclines. 



Among the rarer or more local Bees I will mention Prosopis 

 confusa, Nyl., Sphecodes gihhus, Linn., suhquadratus, ^m.,ferruginatus, 

 Schk., hyalinatus, Schk., variegatiis, v. Hag., and offinis, v. Hag., 

 Andrena hicolor, Fab., angustior, Kirb., and clirgsosceJes, Kirb., Gilissa 

 hceynorrJwidaJis, Fab., Nomada alternata, Kirb., Fahriciana, Kirb., and 

 flavoguttata, Kirb., Osmia fulviventris, Panz., aurulenta, Panz., and 

 hicolor, Schrk., Bomhiis cognatus, Steph., and distinguendus, Mor. 



Without any doubt the greatest capture of the season has been 

 among the Sphecodes, the most difficult and puzzling of all the genera 

 of Bees, and as all our captures in this genus have been carefully 

 examined by my esteemed friend Mr. Edward Saunders,! cannot refrain 

 from publicly thanking him for the vast amount of trouble he has 

 taken in differentiating the species. 



The first to be met with, about the middle of April, is Sphecodes 

 affinis, V. Hag., this little bee occurs in the woods sometimes in com- 

 pany with Halictus tumulorum, Linn., or other small Halicti, and no 

 doubt it breeds in the same places, but though it does burrow in the 

 banks I have found it much more frequently among heaps of small 

 stones that have been gathered up from the fields and laid by the side 

 of a road, and in these it certainly breeds, and along with it here I 

 have taken Nomada flavo guttata, Kirb., which looks as though it were 

 its parasite, both bees being in about equal proportions. Then comes > 

 suhquadratus, Sm., also a w^ood insect, towards the end of May it may 

 be found flying along the deep ruts made by the wood carts in winter, 

 and in these it makes its burrow ; I have watched it burrowing away 



