ON NEW AND LITTLE-KNOWN HYMENOPTERA. 363 
1806. Episyron, pt., Schioedte, Monog. Pomp. Kroyer, Tidsskr. 1, 
p. 831, 1837. Anoplius, pt., Pel. Hist. Nat. MS. Hym., II, p. 440, 
1845. Lvagethes, pt., Pel., Lbed, p. 390, 1845. Salius, pt., Dhilb., 
Hym. Hur., I, p. 34, 18, Gen., 1845. Homonotus, pt., Dhlb., Hym. 
Hur., I, p. 35 (non p. 441), 1845. Ferreola, pt., Smith, Cat. Hym., 
P. III, p. 167, 1885. | 
Typxs : Pompilus viaticus, wrsus, Fabr., cocctneus, Fabr., etc. 
The eyes reach, as a rule, up to the base of the mandibles; only m 
very few cases are the cheeks developed. Forms of the clypeus, of 
the prothorax, and of the middle segment of extraordinary diversity. 
The front wing with one radial cell, which often approaches a tri- 
angular form, rarely is it lanceolate. Three cubital cells; the Ist 
exceeding in size the following ones ; the 2nd is a little larger than the 
3rd or equal in size to it ; the 3rd quadrangular, or triangular, some- 
times also triangular and petiolated. The Ist recurrent nervure 
. discharges itself in the middle of the 2nd cubital cell or nearer the 2nd 
transverse cubital nervure ; the 2nd recurrent nervure in the middle 
of the 3rd cubital cell, or not far therefrom. The transverse medial 
nervure (of the front wing), with a few unimportant exceptions, 
springs somewhere before the apex of the Ist submedial cell, intersti- 
tial, The cubital nervure (of the hind wing), in by far the greater 
number of cases, springs at or after the apex of the anal cell (Homonotus, 
Dhib., p. 85), sometimes also before it (as in the species of Ferreola). 
Legs spined. The tarsi of the anterior legs are in the female often 
furnished with pectinated spines. The tibise of the posterior legs 
are cylindrical, not, as in the female of Salzus, angular, the spines 
on them scattered, not serrated. The claws are toothed in the 
middle of their inner angles, or like as in Salius, Subgen. Cyphononya, 
and Notocyphus in two parts by reason of an obtuse appendix. ‘The 
claw-brush is either present or wanting. Middle segment posteriorly 
rounded, or vertically truncated, or impressed, or more frequently 
emarginated ; its sculpturing is very diverse. The 3rd ventral segment 
with few exceptions (as in species of Homonotus and Ferreola) not 
bearing a transverse impressed mark. 
Pompilus will be treated of here in the comprehensive sense in 
which the genus is usually taken. Iam constrained to do this by the 
_ fact, that characters which haye been pointed out as separating certain 
i 
