46 REV. O. P. CAMBRIDGE ON NEW ARANEIDEA. [Feb. 5, 
backwards. They are similar to the cephalothorax in colour, and 
their surface is slightly granulose. 
The colour of the maxilla and labium is similar to that of the 
falces. 
The sternum (which is nearly round) is of a deeper hue than the 
cephalothorax, convex and granulose. 
The abdomen is rather large, oval, but projects greatly over the 
thorax ; the short, but distinct pedicle connecting it with the thorax 
entering the abdomen about midway between the most elevated 
point and the spinners. The upper surface is shining glabrous, fur- 
nished with a very few bristly hairs, of a dull clay-yellow, marked 
rather irregularly towards the sides and hinder part with dull 
brownish ; the lower portion of the sides and hinder part are rather 
darker and strongly rugulose, giving the upper surface very much 
the appearance of a shell or carapace, whose edge is margined by 
a row of round, small, dull yellowish, somewhat cicatricose spots, of 
which there are also two others, more conspicuous or wide apart, in 
a transverse line on the binder part of the carapace. The spinners 
are small, apparently of ordinary structure, and inconspicuous. The 
underside is dark brown, and at the fore extremity is a rather large 
and somewhat quadrate coriaceous red-brown area, at the posterior 
edges of which, at the outer corners, are the ordinary spiracular 
openings, though scarcely traceable. Just in front of the spinners, 
beneath the abdomen, is a long well-marked transverse fissure, which 
is doubtless the entrance to another spiracular organ. 
Many years ago (1864) I received a large spider from the Swan 
River, and described and figured it, but until a day or two since have 
never had occasion again tolook at it. Examining it, however, now 
closely, I found on the inner side of one of the folded legs, among 
its numerous hairs, the very minute spider (thus till now wholly 
overlooked) which forms the type of the present new genus and 
species. 
EXPLANATION OF PLATE II. 
Fig. 1. Pachylomerus natalensis, sp.n.,? (p. 35). 
a, Spider of natural size ; 4, profile, without legs &. ; ¢, maxillx, 
labium, and portion of sternum ; d, entrance to trap-door nest. 
2. Idiops colletti, sp. n., 2 (p. 37). 
a, Spider, natural size ; 4, profile, without legs &c.; ¢, eyes, from 
above and behind; d, maxillee and labium; e, entrance to nest ; 
J, ditto, with trap- -doar’ raised ; g, section of upper part of nest. 
3. Moggridgea abrahami, sp.n., 2 (p. 41). 
a, Spider, natural size; b, profile, ae legs &e.; ¢, eyes, from 
above and behind; d, portion of bark of “ Kaffir Boom” tree, with 
nest, showing (1) upper hinged lid, (1’) lower ditto, both slightly open. 
4, 5. Stegodyphus gregarius, sp.n., 5 and © (p. 42). 
a, d, enlarged; b, 9, ditto ; c, profile of 3; d, ditto of 2, showing 
long hairs at a; e, natural length of 3; f, natural length of Q; 
g, eyes, from above and behind. 
6. Chasmocephalon neglectum, sp.n. 3 (p. 
a, Spider, enlarged; 6, outline be pe retire and abdomen ; 
ec, profile of ditto; d, eyes from in front; ¢, maxille and labium ; 
i hinder extremity of thorax, showing excavation and insertion of 
abdominal pedicle; g, natural length of spider; %, cephalothorax, 
showing form of hinder part of thorax. 
