156 INSECTA. 
of three very distinct ones, and the abdomen is convex above. Some 
are masons, and frequently have two or three horns on the clypeus, 
which appear to be of use to them in the construction of their nests. 
They conceal the latter in the ground, holes in walls, doors and old 
wood, and sometimes even in the shells of Helices, employing an 
earthy mortar for their construction. They are generally pilose, 
and appear early in the spring. The antennz of the males are 
_usually long. Others employ the petals of flowers, and form cells 
with the cut portions, in the manner of the leaf-cutters. The belle 
tapissiére of Réaumur forms its cells with the petals of the wild 
Poppy, and sometimes of the Rape(1). Others again form their 
nests in the galls of trees(2). 
ANTHIDIUM, Fab. 
Where the abdomen is also convex, but the maxillary palpi are 
uniarticulated. The females form their nests with the down of 
plants(3). 
The two last subgenera of the Dasygastre approach the following 
ones in the absence of a silken brush, a fact which would lead us to 
suppose that these Insects are equally parasitical; but their labrum 
is parallelogramical, and their mandibles are triangular and den- 
tated. The maxillary palpi are very short and biarticulated. 
Sretis, Panz. 
The scutellum destitute both of spines and teeth. The abdomen 
is nearly semi-cylindrical, convex above, and curved at the extre- 
mity(4). 
Ce.ioxys, Lat. 
Where the scutellum has two teeth or spines, and the abdomen is. 
(1) This species, with all these in which the mandibles aré tridentated, forms the 
genus Anruocora of M. Lepeletier. See Encyc. Méthod., article Rophyte. The 
Osmiz properly so called have but two teeth in each mandible. 
(2) Lat., Gener. Crust. et Insect., IV, 164; and the Encyc. Méthod., article 
Osmie. 
(3) Lat., Ann. du Mus. d’Hist. Nat., XIII. 
(4) Lat., Gener. Crust. et Insect., 1V, 163. See particularly the Encyc. Méthod., 
article Stélide. 
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