Pcckhamr — Sliders of the Family Aitidae. 197 
along the upper sides and crosses the thoracic part, and from 
this a central white band passes forward on the cephalic plate. 
The hairs around the eyes are very bright. In onr specimens 
the lower sidls of the cephalothorax are rubbed bare, except? 
ing a white band around the margin. Some white hairs are 
left on the clypeus, and on the front faces of the falces. The 
abdomen has a wide white band at the base which curves down¬ 
ward over the sides, and a central white band connects this 
with a second and third curved transverse white band. On 
either side is a black band, sometimes broken into spots, and 
all around and among the black and white markings, and cov¬ 
ering the back of the abdomen behind the middle, are bright 
red hairs. The upper surface of the palpus is covered with 
white hairs. The legs are dark with some pale spots, and have 
a good many white and red hairs. 
We have seven males from Mashonaland, sent by Hr. Mar¬ 
shall. The figure shows the spider as it appears under alcohol. 
Bait is Leighii sp. no v. 
Plate XXI, figs. 4, 4a. 
The cephalothorax is longer and heavier than the abdomen, 
and both cephalothorax and abdomen are darker in the middle 
than on the sides. 
$. Length 6.5 mm. Legs 1342, first pair heaviest, second 
next. 
The cephalothorax is high and convex, rounding from the 
dorsal eyes forward to the first row, and backward through half 
the thoracic part, the posterior slope, behind this point, being- 
much steeper. The sides are widest at about the point of the 
third row of eyes, where they are parallel for a. little distance,, 
the contraction in front and behind, being inconsiderable. 
The quadrangle of the eyes is one-third wider than long, is 
wider in front than behind, and occupies about two-fifths of the 
cephalothorax. The front eyes are large and close together in 
a curved row, the middle eyes being less than twice as large as 
the lateral. The clypeus is two-thirds as wide as the middle 
