7 8 
Annals of the Transvaal Museum 
Heligmomerus caffer Purcell ? sp. 
A very fine female example was taken at Ma Shangani (4. viii. 1916) by 
Mr G. van Dam. The carapace is 13-9 mm. long and 12-75 broad. The distance , 
between the posterior median eyes is almost twice as great as the distance 
between posterolateral and posteromedian. It thus appears to be different 1 
from the Moorddrift and Bulawayo forms previously recorded. 
Galeosoma mossambicum sp. nov. (text fig. 4 a and b ). 
Types. A series of female examples from Mazambo and from Papai, 
localities in Portuguese East Africa, collected by Mr G. van Dam in July 1915. 
The species is closely related to G. vandami mihi (text fig. 4 c ), from the 
n 
Text fig. 4. a, Galeosoma mossambicum sp. nov. Abdominal shield in side view, b, Galeo- 
soma mossambicum sp. nov. Abdominal shield in dorsal view, c, Galeosoma 
vandami Hwtt. Abdominal shield in side view of specimen from Griffin Mine, 
Leydsdorp. d, Galeosoma planiscutalum sp. nov Abdominal shield in half side 
view, e, Galeosoma covonatum Hwtt. Abdominal shield in side view. 
Abdominal shield. The upper surface is lightly and fairly uniformly convex : 
its outline is almost a regular oval, except that in front there is a distinct angle 
on either side, the front portion being less strongly curved than the corre- 
sponding portion posteriorly. The marginal surfaces are well marked off from 
the upper surface all round, the line of junction being marked by a distinct 
ridge which in front is quite sharp though not definitely upturned : the ridge is 
only a little stronger posteriorly than anteriorly. Viewed from the side, the 
marginal surface is considerably deeper in the middle than in front or behind. 
This marginal surface is composed of two portions fairly sharply marked off 
from each other: the anterior portion is not conspicuously punctured nor 
glossy, being closely covered with short fine hairs ; the posterior portion, which 
extends forwards on either side as far as the anterior angles of the boundary 
of the upper surface,* is glossy and coarsely punctured. The anterior dull 
portion which occupies the whole depth of the marginal surface anteriorly is 
continued backwards along the sides of the shield as a thin strip at the base 
