8o 
Annals of the Transvaal Museum 
the ocular area just about midway between the median weak bristle and the 
fovea. 
Measurements. Length of carapace 47, breadth of carapace 3-6, length of 
upper surface of shield 6-5, breadth of upper surface of shield 5*8, anterior 
depth of shield 1-2, posterior depth of shield -8. 
Mr A. Roberts has collected at New Mukelneuk two quite small examples 
of G. hirsutum which in the flatness and shape of the upper surface dosely 
resemble the species now described : they differ in the pronounced hairiness of 
the shield and in the much greater depth of the marginal surface. The re- 
semblance to planiscutatum is still more pronounced in three minute specimens 
from New Mukelneuk: these have the flat upper surface quite devoid of stiff 
hairs though fairly long delicate hairs occur there. 
A flat upper surface, bounded all round by an upturned edge, is also met 
with in some specimens from Lyttelton Junction and from Garstfontein : these 
differ from planiscutatum in the greater depth of the marginal surface and in 
the absence of distinct rows of setae on the upper surface of the abdomen, 
anterior to the shield. 
Galeosoma vandami Hwtt. var. nov. circumjunctum (text fig. 4 c, PI. IV, figs./ 
and g ). 
This form is founded on two subadult and one j uvenile specimen taken at 
N'Wanedzi River, Zoutpansberg dist., by Mr G. van Dam (18. vii. 1916). It 
differs from the typical form of vandami in that the ridge separating the two 
surfaces is quite complete all round, being well developed, upturned, and quite 
sharp anteriorly. The upper surface is also a little more flattened than in that 
form, but a more characteristic feature of the present specimens is the occur- 
rence of three pairs of long bristly hairs, each hair arising from a slight eminence 
on the dorsal surface: the position of these is indicated on PI. IV, figs. /and g. 
Apart from these, the upper surface of the shield is devoid of long hairs, 
though numerous very fine short hairs occur there. Similar long hairs occur 
in the typical form of vandami, but the hair pits from which they arise are not 
raised or scarcely so : sometimes four pairs of stiff setae are present. 
.Measurements. Total length 18; length, of upper surface of shield 8; 
breadth of upper surface of shield 7*5; depth of marginal surface anteriorly 
1-5; depth of marginal surface posteriorly 1-15; distance of base of first hair 
from anterior margin of shield 2*8, of second hair from anterior margin 5, of 
third hair 6-4. 
I take this opportunity of giving more complete measurements of the 
shield of vandami than were included in the description of that species: 
specimen from Griffin Mine (PI. IV, fig. e), length of upper surface of shield 8-5, 
breadth of upper surface 7-5, depth of marginal surface anteriorly 1*9, depth 
of marginal surface posteriorly -8, depth of marginal surface about the middle 
of its length 17. 
In a series of six specimens from Gravelotte the ridge of the shield is 
usually quite obsolete anteriorly: in one or two cases it is weakly indicated, the 
marginal region in front, as elsewhere, including a glossy and punctured 
secondary surface as well as the primary marginal surface. 
Two specimens referable to this species have been taken recently at 
Ngwaribango, Letaba River, about twenty -five miles N.W.N. of Leydsdorp: 
they are approximately typical, but the shield is large and the marginal 
surfaces well defined and deep although the ridge of separation is not stronger 
