88 ARANEIDEA. 
divergent sharp pale spines, longer than the tubercles ; the rest have only one spine each, but of a similar 
length and character. On the fore part of the caput, the lower margin of the clypeus, and ocular promi- 
nences are also some short prominent spines issuing from tubercles. 
The eyes are small, not very unequal in size, and occupy a wide area. Each hind lateral eye is just behind, 
and near the extremity of, the large divergent tubercular prominence above mentioned ; each fore lateral 
being near its base in front; the fore centrals form a much longer line than the hind centrals, and with 
the latter describe a transverse oblong figure whose width is double its length on the posterior side. 
The legs are short, not very strong, nor greatly differing in length, 1, 2, 4, 3, dark brown, somewhat annulose 
with yellowish markings and annuli. The whole of the metatarsi of the first and second pairs, and the 
lower half of the femora of the third and fourth pairs, are pale yellow. The femora are tuberculose, the 
tubercles having the appearance of being once armed with spines, now broken off. 
The palpi are short, strong, of a yellow-brown colour, the humeral joint deep blackish-brown and armed 
beneath with short tuberculous black spines. 
The falces are of moderate length and strength, and of a yellowish-brown colour, armed in front with a few 
short spines. 
The maxilla, labium, and sternum are deep dark brown. The maxille are long and narrow, almost close 
together, and bristly, the labium being acuminate, almost similar to that of Aphantochilus, Cambr. 
The abdomen is Thomisiform, much broadest and rounded behind, tolerably convex, though rather flattened 
above. Its upperside is of a dull brownish-yellow colour, with two largish round black impressed spots 
in a transverse line near the middle, and a little way in front of these, but nearer together, are two other 
much smaller spots; just in front of these last and describing nearly a square are four conspicuous, conical, 
amber-coloured diaphanous tubercles, each bearing an erect, sharp, tapering pale spine, a little longer than 
the height of the tubercle. A marginal row of similar but smaller spinigerous tubercles runs round the 
anterior side of the abdomen, and there are also several others of a similar kind on each side of the 
central square; besides these, towards the hinder part are some small blackish bristle-bearing granu- 
losities. Just behind each of the largest central round black spots is a pale curved somewhat semilunar 
patch merging laterally. The convexity of the curves is directed backwards, and the anterior margins of 
the patches are white. The sides and underside of the abdomen are dull brownish, the former slightly 
spotted or freckied with whitish. The genital aperture is very minute and inconspicuous, but of charac- 
teristic form. 
Hab. PaxaMa, Bugaba (Champion). 
This spider, though nearly allied to Bucranium taurifrons, Cambr. (P. Z. S. 1881, 
p- 772), from the Amazons, is quite distinct from it. 
THANATUS, C. L. Koch. 
Thanatus punctiger, sp. n. 
Adult female, length 3% lines. 
The cephalothoraa is yellow tinged with orange-brown, and clothed with fine grey pubescence ; the sides of the 
thorax are marked (pencilled in a somewhat reticulated fashion) with deep black-brown ; the caput being 
less thickly marked, a dark line running backwards from each hind lateral eye, and a few spots arranged 
in a somewhat cruciform pattern at the thoracic junction. The clypeus equals half the facial space in 
height, and has a few prominent bristles towards its lower margin. 
The eyes are small, the hind laterals rather the largest. Those of the posterior row are separated from each 
other by as nearly as possible equal intervals, as are also those of the much shorter anterior row. The 
interval between the lateral pairs on either side is rather greater than that between each hind lateral 
eye and the hind central next to it. The interval between the fore centrals is slightly greater than that 
between each and the fore lateral eye on its side; and the interval between each hind central eye and 
the fore central, not next to it but on the opposite side, is equal to that between the eyes of the posterior 
row. 
