Annals or the Transvaal Museum 
207 
Integuments . — The skin throughout is very finely roughened or 
shagreened, except at the articulations. There is an almost complete 
absence of fine hairs : none occur on the carapace nor on the abdomen, 
but on the tarsi, metatarsi, and tibiae of the legs, there are a few scattered 
very long and slender hairs which project outwards at right angles from 
the upper surfaces. The surfaces of the body and appendages bear some 
very characteristic spines : they are very stout and truncated or blunt 
at their tips : sometimes they are even enlarged at their apices. Examined 
under the low power of a compound microscope each truncated spine is 
seen to have the surface frayed into fine serrations near the apex. 
Microstigma geophiluvn , sp. nov. 
Ventral view of trunk and bases of appendages. 
Carapace . — A little longer than broad, depressed, the cephalic region 
being scarcely raised above the thoracic portion, the radial depressions 
weakly developed. Fovea transverse. Ocular area hardly twice as broad 
as long. Ocular tubercle strongly raised. Anterior margins of anterior 
row of eyes practically in a straight line when viewed from above : anterior 
laterals largest of all the eyes : the anterior and posterior margins of the 
posterior row are both in strongly recurved lines. Distance between 
posterior medians slightly greater than twice the long diameter of an eye. 
Some strong spines fringe the lateral margin of the carapace in its posterior 
half and a few also occur in front of and upon the ocular tubercle : other- 
wise the spines on the surface of the carapace are weak and short and are 
not numerous. 
