20 
wider as well as longer ; which De Geer does not say 
was the case. 
The following notes were made on examining se- 
veral nests of both species taken in the summer of 
1833; and I have inserted them, to shew, in opposi- 
tion to Reaumur, that male grubs are frequently 
found in the cells of the upper layers, which belong 
to the neuters. 
No. 1. July 27th. A small nest of tree wasps. 
No. 
No. 
3. 
or 
1st layer contained none but neuters. 
2d do. Neuters and males. 
3d do. Females. 
4th do. Only just begun, and not ready to receive 
the eggs. 
Males and females are hardly ever hatched so early 
in the summer, and none but neuters were found 
in the nest. 
July 24. Tree wasps. 
Ist and 2d layers. Neuters with a few males amongst 
them. 
3d and 4th do. Females not hatched. 
July 27. Tree wasps. 
Ast and 2d layers. Neuters with a few males. 
3d and 4th do. Females. 
5th do. Just commenced. 
August 6th. A large ground nest. 
Ast, 2d, 3d, 4th, and 5th layers. Neuters with a 
few males in each. 
6th and ‘7th do. Females only. 
Aug. '7. Ground wasps; a large nest. 
1st and 2d layers. Neuters only. 
3d do. Neuters and males, 
4th do. Neuters only. 
5th do. Neuters and males. 
6th and ‘7th do. Neuters only. 
8th, 9th, and 10th do. Females only, the larvae not 
far advanced. 
