(144 INSECTA. 
mortar in walls some inches in depth, at the orifice of which 
she forms an exterior tube, at first straight and then recurved, © 
composed of an earthy paste, arranged in thick, contorted 
threads. In the cavity of the interior cell she places from eight 
to twelve little green larve of a similar age, resembling cater- 
pillars, but without feet, arranging them in circular layers. 
Having laid an egg in it, she closes the orifice and destroys the 
scaffolding without(1). 
In the others, the first ring of the abdomen is narrow, elongated 
and pyriform, and the second campanulate, as in i 
EuMENES proper, 
To which we may reunite the Zethi(2) of Fabricius, and the Dis- 
celis(3) of Latreille. 
E. coarctata, Fab.; Panz., Faun. Insect. Germ., LXIII, 12, 
the male~ Five lines in length; black, with yellow spots; pos- 
terior margin of the abdominal annuli of the same colour; first 
ring of the abdomen elongated and pyriform, with two yellow 
dots; an oblique band of yellow on each side of the second, which 
is the largest of all and campanulate. 
The female constructs a spherical nest of very fine earth on 
the stems of plants, which, according to Geoffroy, she fills with 
honey, and then deposits an egg(4). 
Sometimes the mandibles are hardly longer than they are wide, 
and are broadly and obliquely truncated at the extremity; the ligula 
is short or but slightly elongated, and the clypeus nearly square. — 
These species constitute the subgenus of the Wasps, properly so _ 
called, or i : 
(1) See Lat., Gener. Crust. et Insect., IV, p. 139, 136; several Vespz of Fa- 
bricius. 
(2) Lat., Ibid. In Eumenes, the clypeus is longitudinal, and prolonged into a 
point anteriorly; the united mandibles form a long, narrow and pointed rostrum; 
they are proportionally shorter, and merely form an open angle in Zeraus, here 
also the clypeus is as broad as it is long or broader, and has no anterior prolonga- 
tion. The second cubital cell is perfectly triangular. The maxillary palpi do 
not extend beyond the extremity of the jaws. They are longer in Disca@xivs, 
which resembles Zethus in the form of the mandibles and clypeus. We should 
observe, that most of the Insects placed by Fabricius in this last genus are Polistes, 
in which, however, the abdomen differs from that of the ordinary species, and 
approximates to that of an Eumenes. | 
(3) Lat., Ibid. 
(4) Lat., Ibid. 
