from the East of Central Africa. 337 



comprises in its anterior part a fine dark-brown line that termi- 

 nates at the medial indentation. The falces are powerful, coni- 

 cal, vertical, armed with teeth on the inner surface, provided 

 with long yellowish hairs, and have a dark-brown hue. The 

 maxillae are long, straight, and truncated obliquely at the extre- 

 mity on the inner side, which is fringed with reddish hairs ; 

 and the lip is short, broad, and somewhat quadrate, but rounded 

 on the sides. These parts are of a reddish-brown colour, the 

 outer side of the maxillae and the base of the lip being much the 

 darkest. The sternum, which has a broad oval form, is clothed 

 with short greyish hairs, interspersed with long upright ones of 

 a darker hue, and is of a pale red-brown colour. The legs are 

 long, provided with hairs and sessile spines, and of a reddish- 

 brown hue ; the fourth pair is the longest, then the first, and 

 the third pair is the shortest ; the metatarsi and tarsi have hair- 

 like papillae on their inferior surface, and the latter are termi- 

 nated by two curved claws, pectinated at their base. The palpi 

 are long, and resemble the legs in colour (with the exception of 

 the base of the humeral joint, which has a brighter tinge of red), 

 and have a short, curved, pectinated claw at their extremity. 

 The abdomen is oviform, hairy, convex above, and projects a 

 little over the base of the cephalothorax ; the upper part and 

 sides are of a brown colour freckled with yellowish grey, and a 

 broad dentated band of a yellower hue, bordered with black, 

 extends along the middle of the former, and comprises a longi- 

 tudinal yellow band in its anterior half; a broad, triangular, 

 black mark, having its truncated apex directed backwards, and 

 comprising within its base two oval white spots placed trans- 

 versely, occurs on the under part ; it is bounded on each side 

 by a bright orange-red band, and these bands converge to the 

 spinners, where they meet; the sexual organs, which are highly 

 developed, have a large process directed backwards from their 

 anterior margin, and, with the branchial opercula, are of a dark 

 reddish-brown hue, the latter being the paler. 



The specimen from which the description was made was the 

 only one of the species in the collection. 



Ctenus vividus. 



Length of the female -H^^ths of an inch ; length of the cephalo- 

 thorax -H^, breadth tV J breadth of the abdomen -^ ; length of 

 an anterior leg l^j length of a leg of the third pair 1-,%. 



The disposition and relative size of the eyes of this species are 

 similar to those of Ctenus velox. The legs are long, robust, 

 provided with hairs and sessile spines, and of a yellowish-brown 

 colour ; the first pair is the longest, then the fourth, and the 

 third pair is the shortest ; the metatarsi and tarsi have hair-like 



Ann. ^ Mag. N. Hist. Ser. 3. Vol. xvi. 23 



