from the East of Central Africa. 35 1 



on the summit of the protuberance, and the two inferior ones, 

 which are rather wider apart and the largest of the eight, are 

 situated near its middle, in front ; the lateral eyes are the small- 

 est ; those of each pair are seated obliquely on the outer side of 

 a slender, elevated, upright tubercle, a little below its somewhat 

 pointed extremity, and are separated by a moderately wide 

 interval. 



Maxill(B short, straight, and enlarged and rounded at the 

 extremity. 



Lip semicircular, but slightly pointed at the apex. 



Legs moderately robust ; the first and second pairs are much 

 longer than the third and fourth pairs, the first pair being the 

 longest and the thii'd the shortest. 



Abdomen subglobose, provided on the upper part and sides 

 with numerous, close-set, sharp-pointed spines, varying greatly 

 in their dimensions. 



Pycnacantha Meadii. 



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

 thorax ^, breadth ^; breadth of the abdomen J^; length of an 

 anterior leg -r^; length of a leg of the third pair ^. 



The cephalothorax is compressed before, truncated in front, 

 with prominent lateral angles, broadly rounded on the sides, 

 somewhat convex, and has a shallow indentation in the medial 

 line of the posterior region; it is thinly clothed with short, 

 whitish hairs, and of a dull-yellow colour, the base being much 

 the palest ; a narrow brown band passes from between the lateral 

 tubercles to the medial indentation ; a longitudinal one, of a 

 similar hue, but somewhat paler, whose posterior part is much 

 the broadest, occurs on each side, and small black prominences, 

 which are most numerous on the medial band, are distributed 

 over its surface. The falces are conical, vertical, armed with 

 teeth on the inner surface, and of a pale-yellow colour in front, 

 the outer side and extremity having a reddish-brown hue. The 

 maxillse and lip are of a dark reddish-brown colour, the extremity 

 of the former and the apex of the latter having a yellowish-white 

 hue. The sternum is heart-shaped, with small eminences on the 

 sides, opposite to the legs, and is of a yellow colour, with dark- 

 brown margins. The legs are provided with hairs and spines, 

 two parallel rows of the latter occurring on the inferior surface 

 of the metatarsi and tarsi of the first and second pairs ; they 

 have a pale dull-yellow hue, and the tarsi are terminated by 

 claws of the usual number and structure. The palpi resemble 

 the legs in colour, and have a short, curved, pectinated claw at 

 their extremity. The abdomen, which is clothed with short, 

 pale hairs, is of a subglobose form, very convex above, projecting 



