from the East of Central Africa. 347 



three strong conical prominences project from each side; and it 

 is terminated by a membranous caudal appendage, with a minute 

 conical prominence on each side of its base ; the upper part is 

 clothed with hoary hairs, and is of a yellow colour, with a broad, 

 semilunar, brown mark at its anterior extremity, whose convexity 

 is directed upwards ; to this mark succeed five transverse bands 

 of a darker hue, whose margins are very irregular, the first and 

 last having their continuity interrupted in the middle; there is 

 a series of four depressed brown spots on each side of the medial 

 line, and four fine lines of a similar hue are disposed longitudi- 

 nally on the posterior part ; the colour of the caudal appendage 

 is brown, and above it there is an oblong yellow spot ; the sides 

 and under part have a brown hue; the former are corrugated 

 and marked with brownish-yellow spots and streaks, which are 

 almost concealed by hoary hairs, and the yellow lateral tubercles 

 are marked transversely with brown in the middle ; a series of 

 large, irregular, yellow spots extends along each side of the me- 

 dial line of the under part, and minute spots of a similar hue 

 occur in the interval between the two; the sexual organs, which 

 are moderately developed, have a long, pale reddish-brown pro- 

 cess in connexion with their anterior margin that is directed 

 backwards, and their predominant colour, with that of the 

 branchial opercula, is dark-brown faintly tinged with red, the 

 latter being the paler. The eyes are disposed on the anterior 

 part of the cephalothorax in two transverse rows ; the four in- 

 termediate ones nearly form a square, the two anterior ones, 

 which are seated on a small protuberance, being the largest of 

 the eight ; the eyes of each lateral pair are placed obliquely on 

 a tubercle, and are near to each other, but not in contact, the 

 anterior ones being much the smallest. The cephalothorax is 

 compressed before, rounded in front and on the sides, slightly 

 convex, with a broad, shallow indentation in the medial line of 

 the posterior region ; it is of a dark-brown colour, with a broad 

 pale reddish-brown band extending from the front to the medial 

 indentation, and brownish-yellow lateral margins ; these colours 

 are concealed, except at the base, by a dense covering of white 

 adpressed hairs. The falces are powerful, conical, vertical, armed 

 with teeth on the inner surface, and of a red -brown colour. 

 The maxilla? are short, strong, and greatly enlarged and rounded 

 at the extremity ; the lip is semicircular, but somewhat pointed 

 at the apex ; and the sternum is heart-shaped, hairy, and has 

 eminences on the sides opposite to the legs. These parts are of 

 a dark-brown colour; the extremity of the maxillae and the 

 apex of the lip have a brownish-yellow hue; and a band extend- 

 ing along the middle of the sternum, from each side of which a 

 streak is directed obliquely backwards and outwards, and two 



