1901. ] REV. 0. PICKARD-CAMBRIDGE ON EXOTIC SPIDERS. ll 
[From the PROCEEDINGS OF THE ZOOLUGICAL Society oF Lonpon, 
January 15, 1901.} 
On some new and interesting Exotic Spiders collected by 
Messrs. G. A. K. Marshall and R. Shelford. By the 
Rev. Octavius Pickarp-CamBripGE, M.A., F.R.S., &e. 
% ee 
(Plate V.') 
Order ARANEIDEA. 
Fam. DRASSID &. 
Gen. ProstHesima L. Koch. 
PROSTHESIMA ALBOMACULATA, sp. n. (Plate V. figs. 2-2.) 
Adult female, length 23 lines (4°5 mm.). 
Cephalothorax flattish, oval, truncate at each end, fore end 
rather the narrowest, lateral marginal impressions at caput very 
slight, profile-line nearly level. Colour deep black-brown, softening 
to yellowish brown round the thoracic indentation ; surface thinly 
covered with grey adpressed hairs. 
Eyes in two transverse rows of very nearly equal length. Curve 
of posterior row slight and its convexity directed backwards. 
Anterior row almost straight, laterals of this row largest of the 
eight, the two centrals being placed on a slight prominence, 
and further from each other than from the laterals. The two 
centrals of the posterior row are much further from each other 
than from the laterals and are slightly the largest. The four 
centrals form a quadrangle as long as broad, the fore side being 
shortest. 
Legs moderate in length and strength, 4, 1, 2, 3. Colour 
yellow to yellow-brown ; the tibiw, femora, and genue of the tirst 
pair black-brown, these joints of the second pair yellow-brown, 
and of the third and fourth pairs more or less deeply marked 
longitudinally and suffused with black and brown, furnished with 
coarse hairs and spines, the latter most numerous and strongest 
on the tibiz and metatarsi of the third and fourth pairs. 
Falces, mawille, and labiwm deep brown. 
Sternum oval, pointed behind ; colour reddish yellow-brown. 
Abdomen oval, somewhat flattened. black, with four conspicuous 
white spots forming a quadrangle on the fore half of the upperside, 
the two hinder spots largest and nearly round, the anterior, near 
the fore margin, oval or subtriangular and forming a shorter 
transverse line than the hinder spots. On each side of the under- 
side, about the middle, is a large somewhat irregular triangular- 
shaped white patch, whose inner angles are nearly contiguous a 
little way behind the middle. Spinners of the inferior pair much 
wider apart than the superiors. Genital aperture simple but 
characteristic in form. 
Hab. Salisbury, Mashonaland, S. Africa, 5000 feet, Nov. 1898 
to Jan. 1899 (@. A. K. Marshall). 
' For an explanation of the Plate, see p. 16. 
[1] 
