Annals of the Tkansvaal Museum. 
139 
Sphex (Harpactopus) tyr annus Smith. 
Cat. Hym. Ins., Brit. Mus., IY, 264 ; Kohl, Ann. Hof. Mus., Wien., 
V, 349 ; Bingham, Ann. Mag. Nat. Hist., (7), X, 216. 
Neighbourhood of Pretoria. February. Westfalia. December. 
Zoutpansberg District 
Sphex umbrosus Chr. 
Kohl, Ann. Naturh. Hof. Mus., Wien., V, 406 ; Denkschr. d. 
Mathe.-Naturwiss. Klasse d. Kaiser. Akad. d. Wissen, 1906, 31 ; 
Bingham, Ann. and Mag. Nat. Hist., (7), X, 216. 
Sphex taschenbergi Magretti. — Ann. Mus. Civ. Stor. Nat., Genova, (2) 
1, VI. 
Sphex metallica Taschenberg. — Zeits. f. d. g. Naturwiss. Halle, XXXIV, 
414. 
Sphex erebus Kirby. — Bull. Liver. Mus. iii, 15, 5 ; Forbes, Nat. Hist, 
of Sokotra and Abd-el-Kuri, 240, 12, pi. XV, f. 2. 
Kranspoort. December. 
Both the forms metallica and taschenbergi occur in Cape Colony. 
Mr. Krauze’s example is the var. metallica — erebus. 
Sphex (Isodonta) jansei, sp. n. 
Black ; the head, thorax, and base of legs densely covered with longish 
pale-grey pubescence ; the abdomen with a grey pile ; mandibles, except 
the teeth, the apex of clypeus, the centre broadly (the red colour extending 
near to the middle in the centre), the sides narrowly, antennal scape, 
tegulae, and the legs, except the coxae, greater part of the trochanters, 
a streak on the basal outer half of the fore femora, the basal three-fourths 
of the middle behind, and the hinder with more than three-fourths, black ; 
wings hyaline ; the apex infuscated in front from the end of the radial 
cellule to the lower part of the third transverse cubital nervure, and the 
second transverse basal ; the hind wings have the apex slightly infus- 
cated ; the second transverse cubital cellule large, of equal width, the 
two transverse cubital nervures straight, oblique, parallel, the third 
roundly, broadly curved from the top ; the third abscissa of the radius 
as long as the first, about one-fourth as long as the second, less than the 
space bounded by the first recurrent and the second transverse cubital ; 
the first recurrent nervure received near the apical fourth, the second at 
the apex of the basal third, i.e., at a distinctly greater distance than is 
the second ; abdominal petiole fully four times longer than wide, about 
one-fourth longer than the hind coxae. Male. 
Length, 23 mm. 
Pretoria. February. 
Eyes slightly, but distinctly converging below ; clypeus clearly longer 
than wide, its apex transverse ; hinder ocelli separated from each other 
by a greater distance than they are from the eyes ; puncturation on the 
head and thorax sparse, minute ; the metanotum finely, weakly, trans- 
versely striated ; tibial and tarsal spines rufous ; apical abdominal seg- 
ment bluntly rounded above and below ; the penultimate transverse. 
Of the African species known to me the present comes nearest to 
L meruensis Cam., which may be known from it by the wings, costa, and 
