collected in the Cape de Verde Islands. 97 



of a yellow colour, with the exception of the extremity of the 

 femora and tibia?, the genua, and the metatarsi and tarsi, which 

 are of a black hue, the base of the metatarsi of the first and 

 second pairs having a tinge of yellow; the first pair is the 

 longest, then the second, and the third pair is the shortest ; the 

 tarsi are terminated by claws of the usual number and structure. 

 The palpi are short, and have a yellow hue, the digital joint, 

 which has a slightly curved, pectinated claw at its extremity, 

 being strongly tinged with brown. The eyes are disposed on 

 the anterior part of the cephalothorax in two transverse rows ; 

 the four intermediate ones nearly form a square, the two anterior 

 ones, which are seated on a protuberance, and are rather nearer 

 to each other than the two posterior ones, being the largest of 

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

 a prominent tubercle ; they are the smallest, and are separated 

 by a considerable interval. The cephalothorax is long, rather 

 convex above, truncated in front, compressed before, moderately 

 rounded on the sides, which are marked with furrows converging 

 towards a transverse pair of indentations in the medial line of the 

 posterior region, and has two convex, glossy eminences situated 

 transversely near its middle ; it is of a brownish-black colour, 

 which is almost concealed by a covering of short, adpresscd, 

 white hairs having a silvery lustre. The falces are powerful, 

 conical, vertical, convex at the base, in front, and armed with 

 teeth on the inner surface; the maxillfe are short, strong, and 

 greatly enlarged and rounded at the extremity ; the lip is some- 

 what oval. These parts are of a brownish-black colour, the 

 falces being the darkest, and the extremity of the maxillre and 

 the apex of the lip have a dull yellow hue. The sternum is ob- 

 long heart-shaped, glossy, with eminences on the sides, opposite 

 to the legs, and is of a yellow colour, with brownish-black lateral 

 margins. The abdomen is oviform, glossy, sparingly clothed 

 with short pale hairs, convex above, and projects over the base 

 of the cephalothorax ; it is of a brown colour, tinged with olive, 

 and has a large, crescent-shaped, yellow mark near the anterior 

 extremity of its upper part, followed by four spots of the same 

 hue in the medial line, which diminish in size as they approach 

 the spinners ; an obscure, curved, yellowish band passes above 

 each branchial operculum, and a dull spot of the same hue 

 occurs on the upper part of each side ; four minute yellow spots 

 on the under side form a transverse row immediately below the 

 sexual organs, and a large, irregular, yellow spot is situated 

 midway between those organs and the spinners; the sexual 

 organs are moderately developed, and, with the branchial oper- 

 cula and spinners, are of a dark-brown colour. Some speci- 

 mens have the yellow spots in the medial line of the upper 



