ON NEW AND LITTLE-KNOWN HYMENOPTERA. 367 
truncated, impressed, or emarginate, and the sides frequently provided 
with an obtuse tooth or hook, 3rd ventral segment not bearing any 
transverse impression, Abdomen towards the apex not compressed 
laterally. | 
17TH Group (Ferreola, pt., Smith). 
The transverse medial nervure of the front wing interstitial. Cubital 
nervure of the hind wing arising on the medial nervure before the 
apex of the anal cell. Claws in two portions (bifid). Claw-brush 
developed ; tarsi of the anterior legs with or without ciliated spines. 
The eyes frequently not reaching the base of the mandibles. 3rd 
ventral segment not bearing any transverse impression. The abdomen 
compressed laterally. Middle segment as in the foregoing group. 
18TH Group (Pedinaspés, Kohl.). 
The transverse medial nervure (of the front wing) interstitial, or 
arising well before the apex of the anal cell. Cubital nervure of the 
hind wing frequently interstitial, in a few cases arising a little after the 
apex of the anal cell. Claws toothed, very seldom bifid. The joints of 
the tarsi of the anterior legs thick and without ciliated spines, 2nd, 3rd, 
and 4th short. Head flat, clypeus generally vertically flat, seldom 
forming a projecting plane. Pronotum of diverse forms not unfre- 
quently of remarkable length (P. cubensis, Cr.), very commonly verti= 
cally truncated in front. Middle segment rounded posteriorly, some- 
times sloping at a sharp angle, or flatly impressed or even emarginate. 
The abdomen, at least towards its apex, visibly compressed laterally 
(Type: Pompilus operculatus, Klug.). 
—— ee 
The following is a list of some of the Pompilide, in my collection, 
which I have been unable to identify or compare with already described 
species, and I have come to the conclusion that they are as yet 
undescribed. 
1, MACROMERIS VIOLACHA, Pel. 
Macromeris Vionacka, Pel., Hist, Nat. MS., Hym., ILI, p. 464. 
Hasrrat : India, Burma, Tenasserim, and the Malay Archipelago. 
The characters of the genus defined by Kohl are well marked in this 
species, more especially the unarmed tibiz bearing neither spines nor 
hairs, the cone-shaped posterior portion of the mesosternum, the 
thickened coxze, trochanters, and femora, as also the sharp denticulated 
inferior edge of the last. 
