HYMENOPTERA. 139 
quently the beginning of a fourth, which does not however reach the 
extremity of the wing; the first and the third receive, each, a recur- 
rent nervure. The abdomen is narrowed in the manner of a pedicle 
widened at its base. The tarsi are terminated by a large pellet(1). In 
Axyson, Jur.—Pompilus, Fab. 
We also perceive three complete cubital cells; but the second is 
petiolate, and receives the two recurrent nervures. The base of the 
abdomen is not particularly narrowed. The terminal pellet of the 
tarsi is small(2). 
The remaining Crabronites have their antennz inserted higher or 
near the middle of the anterior face of the head; they are usually 
thickest at the extremity, or even clavate. They all have three com- 
plete cubital cells, and two recurrent nervures. 
These Insects are connected by various characters with those of 
the following family. 
Sometimes the clypeus is almost square. The abdomen is borne 
on an abrupt, long pedicle, formed by the first ring. The mandibles 
terminate by two teeth. 
Psen, Lat. Jur.—7rypoxylon, Pelopeus, Fab.(3) 
Sometimes the clypeus is as if trilobate. ‘The first ring of the 
abdomen is at most narrowed in the manner of a knot. The man- 
dibles terminate in a simple point. The eyes are frequently some- 
what emarginated. 
These Insects form the genus 
Puitantuus, Fab. 
The females make their nests in sand, and bury the bodies of Bees, 
Andrenetz, and even Cucurlionites, for the nourishment of their 
larve. z : 
Other entomologists restrict this generic appellation to those 
species in which the antenne are remote and abruptly inflated, in 
which the mandibles exhibit no projection on the inner side, and 
where all the cubital cells are sessiie. 
(1) Lat., Ibid., 85. 
(2) Lat., Ibid., 86. 
(3) Lat-, Gen. Crust. et Insect., IV, 91. 
