OCR Text |
Show 430 REV. O. P. CAMBRIDGE ON NEW ARANEIDEA. [May 16 vellow 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, wbile 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 groundcolour 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. CHRYSSO? QUADRATA, sp. n. (Plate XXX. fig. 7.) Adult female, length 2 lines ; adult male, \\ 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, maxillae, 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 tibiae, tarsi, and metatarsi being dark, varying to a deep blackish red-brown. The radial and digital 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 maxilla are rather long, pointed at their extremities, and inclined towards the labium. |