174 
Annals of the Transvaal Museum. 
others, the second is slightly roundly curved, the third much more dis- 
tinctly so ; the first recurrent nervure is received shortly behind the middle, 
the second near the base of the cellule ; the first transverse median nervure 
near the base of the apical third. Antennal fovea clearly defined, with 
sharp, projecting bounding keels, which approximate, but do not meet, 
below. The costal and basal alar nervures are paler than the apical. 
Arge transvaalensis, sp. n. 
Black, densely covered with a white pile, the upper part of the head 
and of the thorax with the black, tinged with blue ; the face, clypeus, 
except below, outer orbits, and the prothorax, except narrowly and 
irregularly below, yellowish testaceous ; the antennae, palpi, and man- 
dibles black ; the abdomen rufo-testaceous, a broad black band on the 
sides of the first, second, and fourth to seventh dorsal segments. Wings 
hyaline, tinged with yellow, the costa and nervures testaceous, except the 
basal two abscissae of the radius, the cubitus except the basal abscissa, 
the second transverse cubital and the anal nervure which are black ; the 
second abscissa of the radius is about one-fourth shorter than the third, 
the first transverse median nervure is received in the middle of the cellule. 
Temples distinctly roundly dilated behind the eyes ; there is no antennal 
area, only a keel on the inner side of the antennae. Legs with the coxae, 
trochanters, femora, base of tibiae narrowly, their apex more broadly, the 
apex of the basal two joints of the four front tarsi, the base and apex of 
the hinder pair and all the other joints black, the rest testaceous. There 
is a fuscous cloud, longer anteriorly than along the radius, in the base of 
the radial cellule, one in the apex of the first cubital of equal width at the 
base, the basal (and larger) hyaline part being triangular and this cloud 
is continued into the second cubital cellule where it is wider along the 
cubitus than along the radius. 
Allied to A. dirce , Kirby. 
Athalia himantopus, Klug. 
Jahrb. d. Insect I, 253, 7 ; Kirby, List of Hymen, I, 236 ; Konow, 
Wissen. Erbeg. d. Schwed., Zool. Exped. nach dem Kilimandjaro, etc., 
Tenthredidinae, 3. 
Waterval. November and December. Zusterstroom, September. 
ICHNEUMONIDAE. 
ICHNEUMONINI. 
Ichneumon transvaalensis , sp. n. 
Dark rufous, the central part of the propleurae, the apex of the meso- 
pleurae above and more narrowly below, the mesosternum and the base 
of the metapleurae, black ; the centre of the mesonotum and of the 
metanotum darker coloured than the sides ; legs coloured like the body, 
the four anterior tarsi darker coloured, the posterior black. The antennal 
scape rufous, the flagellum black, the ninth to eighteenth joints of the 
flagellum for the greater part yellowish- white. Wings hyaline, very 
iridescent, the stigma rufous, the costa and nervures black ; the disco- 
cubital nervure with a minute stump, the recurrent nervure angled above 
