PECKHAM— PELLENES AND SOME OTHER GENERA. 
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a white spot. The legs are not at all hairy. The first pair is 
brown, elongated, and somewhat thickened ; the others are slen- 
der, rather short, and pale yellow. The palpi are rather long, 
and are pale brown in color. The falces are brown, and are 
short, horizontal and wide, the width at the end being equal to 
the length. There is a wide apophysis at the distal end, on the 
inner side, upon which is a small tooth. The fang has a notch 
on the outer side of the proximal end. 
We have one male from Santarem, Brazil, sent to us by Mr. 
Moenkhaus. 
Irura, gen. nov, 
PI. II, figs. 3-3b. 
This very distinct genus belongs to the Homalattus Group, 
being most closely allied to Rhenc, but differing from that genus 
in having the upper surface of the cephalothorax flat, and a wider 
quadrangle of the eyes. 
Both cephalothorax and abdomen are short, wide and rounded, 
the cephalothorax being plainly wider than long and widest 
behind the dorsal eyes. It is very low, and is perfectly flat on 
top. The sides are nearly vertical. The quadrangle of the eyes 
Occupies slightly more than half of the cephalothorax, is twice 
as wide as long, and is plainly wider behind than in front. The 
front middle eyes are close together, the lateral being separated 
from them, and about half as large. This first row is straight. 
The second row is plainly nearer the first than the third, and the 
third is not quite so wide as the cephalothorax. The falces are 
short, vertical, robust and slightly divergent. The first legs 
have the joints thickened. 
Irura pulchra, n. 
PI. II, figs. 3-3c. 
Small spiders, covered with pinkish iridescent scales. The 
femur of the first leg is iridescent steel blue, with a fringe of 
white hairs. 
9. Length, 1 mm. Legs, 1423. 
The cephalothorax is dark colored with a covering of brilliant 
pinkish iridescent scales. The ground-color of the abdomen is 
pale yellow, with two pairs of darker spots, the posterior pair 
being larger than the others and placed in the middle of the 
dorsum. The whole is covered with iridescent scales, those on 
the central part being golden, while around the edges they are 
pink and green. The first legs and the palpi have the joints 
thickened with a covering of pinkish iridescent scales. The femur 
of the first leg, on the front, or inner side, is iridescent steel-blue, 
