430 REV. 0. P. CAMBRIDGE ON NEW ARANEIDEA. [May 16 
yellow colour; the two terminal joints of the palpi (in the female) 
black-brown, and the tarsi of the legs tinged with dark brown. 
The palpi are short and slender, excepting the digital joints of 
those of the male, which are very large and of a dark yellow-brown 
hue ; the palpal organs are highly developed and complex, with a 
closely connected, long, rather strong, sinuously curved black spine, 
whose origin is near their centre, and its long, filiform, slender point 
ends near their extremity. The length of the digital joint is nearly 
equal to that of all the rest of the palpus; the radial joint is very 
short and spread out, the cubital equally short but of a somewhat 
nodiform shape. 
The abdomen of the female has its posterior extremity drawn out 
into an obtuse point, the distance of which from the spinners is in 
some cases equal to that from the spinners to the fore extremity of 
the upperside of the abdomen, while the abdomen of the male has 
the posterior extremity only slightly and very obtusely produced. 
The colours and markings are similar in both sexes, the ground- 
colour being of a dull luteous clay-yellow, with a long, tapering, 
white, central longitudinal band on the upperside, broken up into 
more or less separated blotches and spots, and a longitudinal row of 
large white blotches on each side. The posterior extremity is tipped 
with black ; and there are also four rather suffused black markings 
near the upperside, one on each side towards the fore part, and the 
other two near the beginning of the produced portion. The genital 
aperture of the female is of a simple, somewhat semicircular form. 
Examples of both sexes were contained in Mr. Traill’s Amazon 
collection. 
Curysso? QuapRATA, sp. n. (Plate XXX. fig. 7.) 
Adult female, length 2 lines; adult male, 13 line. 
It is with some hesitation that 1 include this Spider in the above 
genus; it differs from C. albomaculata (the type species) in a 
more raised ocular region and a slightly different relative size of the 
four central eyes. The labium also is broader at the apex. 
The cephalothorax, falces, maxille, labium, and sternum are of a 
clear slightly orange-yellow colour ; the basal half of the femora of 
the legs is also of a similar hue, the remainder, with the tibia, tarsi, 
and metatarsi being dark, varying to a deep blackish red-brown. The 
radial and digita] joints of the palpi are also dark brown. 
The four central eyes do not differ much in size; they form a 
quadrate figure whose width is slightly greater than its length ; taken 
in two rows, the eyes of each row are as nearly as possible equidistant 
from each other. 
The legs are moderately long, 1, 4, 2, 3, slender, and furnished with 
hairs only. 
The falces are of moderate length, straight, vertical or very 
nearly so. ; 
The mazille are rather long, pointed at their extremities, and 
inclined towards the labium. 
