38 
OKCYNIA; PSEUDOSPHEX. By Dr. M. Dratjdt. 
opaca. 
calcarata. 
strigosus. 
se rice us. 
causa. 
polybia. 
pellax. 
behind the stylus and then running to a point, a well developed sucker, erect palpi with long scale-hairs at 
the 1st joint; the short ctenodont antennae being serrate at the ends are above in the middle set with thick 
and rough scales. The neuration of the wings similar as in the following genus, but on the forewings both the 
upper subcostal veins are petioled, the lower radial vein and the upper median vein do not approach each other. 
On the hindwings the subcostal and the uppermost radial are unpetioled, the lower median vein and the lowest 
radial are standing on a long petiole, the middle radial and the upper median vein are absent; the cell is very 
narrow, the transverse vein short and oblicpie. 
P. opaca Wkr. (= vespa H.-Schaff.) (10 c) is unicolorously bluish-black with a metallic lustre; the 
shaft of the antennae above and the 2nd abdominal ring laterally and beneath whitish. The hindwing exhibits 
below the base of the cell a small, triangular hyaline spot. Known only from the Amazon (Para, Sa. Catharina). 
2. Genus: ©rcyuia Wkr. 
Large and robust with a well-developed sucker, erect palpi with a short, obtuse terminal joint. The 
long, narrow forewings are distinguished from the allied genera by both the upper subcostal veins rising separately 
from the cell, while the lower radial and the upper median vein likewise rise separately, but run very near 
and parallel to each other for about half their length, the upper median vein rising close at the lower cell- 
angle. Forewings as in the preceding, but the subcostal and the upper radial vein are short-petioled. 
O. calcarata Wkr. (10 c). The sole, hornet-like species has dark-brown wings; the inner-marginal 
vein of the forewing has a steel-blue reflection particularly towards the margin. The body is black. The anterior 
area of the palpi, forehead, vertex, collar, covers of the shoulder-covers, thorax and anterior hips are yellow- 
spotted like the 3 first abdominal rings. Antennae and ends of the posterior tarsi orange-brownish. Occurring 
in Brazil (Amazon, Para) and lying before me also from East Colombia from the Upper Rio Negro (Coll. Fassl). 
3. Genus: IPseudospIiex Hbn. 
Smaller, ichneumon-like animals of mostly dark colours with the abdomen strongly strangulated at 
the base, whereby the habitus of the wasps is most deceptively copied in single species. The palpi, being steeply 
appressed to the head, are very hairy downward, like a beard. The <$ exhibits on the ventral side a large valve 
covering the 2nd and 3rd segments. The neuration is not quite constant in the species. The two lower radials 
and the upper median vein of the forewing rise from one place, the lowest subcostal vein rises nearer to the 
apex than the third. 
P. strigosus Druce (10 c) resembles the Amycles- species with the exception of the strangulated abdomen; 
the whole animal is blackish-brown, which colour turns more reddish towards the light, diaphanous apical 
spot. The forewings also exhibit 2 diaphanous streak-spots below and behind the cell. On the forewings the 
lower median vein rises from the cell-angle. In Mexico it was found in the States of Vera Cruz, Tabasco, Jalisco 
and Yucatan, as well as in Guatemala; the species flies together with the Hymenoptera Parachartergus apicalis 
from which it is hardly discernible at a hasty glance. 
P. sericeus Schrottky. (The figure denoted as sericeus on t. 10 c does not represent this species, but 
P. polybia Kaye.) Somewhat larger than the preceding, and distinguishable by the wings being dusted in a 
rusty brown and being hyaline outwards below the anterior median vein, as well as by the two first, light- 
brown coloured abdominal rings. The body is otherwise black; the palpi inside and at the apex brown; the hind 
part of the head and the upper surface of the thorax sparsely, the middle of the antennae more abundantly 
scaled in a metallic blue; the base of the antennae whitish, the apex brown. Legs light brown with darker 
femora and white forehips. The first abdominal ring exhibits above a velvety-black basal spot, the ventral 
valve being white-margined. Expanse of wings: 26 mm. From Paraguay. 
P. causa spec. nov. (10 c) greatly resembles strigosus in its exterior, but as the lower median vein rises 
farther down, it belongs to the following group and is at once distinguishable by the blackish-brown costal 
part being but slightly lighter towards the apex: the apex of the wings remains brown. The antennae are scaled 
in an intense metallic blue, somewhat longer ctenodont and the terminal third being shorter and more compact 
in proportion to strigosus is white. The very long-bearded palpi are proximally rusty-brown; the forehead 
with greyish white hair. The hindwings are somewhat lighter than in strigosus. •—- Described according to a 
G from the Upper Cauca-Valley (Colombia, 1000 m). Type in the Coll. Fassl. 
P. polybia Kaye (TO c, as sericeus) has a black head and thorax. The eyes are finely margined by white; 
the two basal thirds of the antennae are bluish-black, the thinned apical third dull black. The black abdomen 
exhibits at the strangulated segment laterally an oblique, white streak. The yellowish-hyaline forewings are 
broadly scaled in brownish in the costal part; the hindwings yellowish-diaphanous. Legs yellow with a velvety- 
black inner side of the femora. Expanse of wings: 26 mm. Brazil (Castro [Parana]) in April. 
P. pellax spec. nov. (10 c) approximates polybia. The body is black, the head, particularly near the 
forehead and collar, interspersed with coarse, bluish-silvery hairs; the 3 first abdominal rings above with a 
