Blackwall — Spiders Captured in the Seychelles Islands. 9 



four intermediate eyes form a square, and those of each lateral pair 

 are placed obliquely and wide apart on a tubercle ; the anterior lateral 

 eyes are the largest, and the posterior intermediate ones the smallest 

 of the eight. The cephalothorax is large, convex, glossy, slightly 

 •compressed before, truncated in front, rounded on the sides, and has 

 an indentation in the medial line of the posterior region ; it is clothed 

 with short dull-yellowish hairs, and has a red-brown hue, the anterior 

 part being the darkest. The falces are powerful, conical, slightly 

 prominent, somewhat divergent at the extremity, armed with teeth on 

 the inner surface, and have some long yellowish hairs in front ; the 

 maxillae are strong, rounded at the extremity, and curved towards the 

 lip, which is somewhat quadrate, being broader at the base than at 

 the apex. These parts are of a brownish-black colour, the extremity of 

 the maxillae and the apex of the lip having a tinge of red ; the latter 

 and the extremity of the falces on the inner side are densely fringed 

 with long bright-red hairs ; the sternum is heart-shaped, and of a 

 red-brown colour. The legs are long, robust, provided with hairs and 

 strong sessile spines, and are of a red-brown colour ; the second pair is 

 the longest, then the first, and the third pair is the shortest ; each 

 tarsus is terminated by two curved, pectinated claws, and the anteiior 

 part of the tibiae and the metatarsi and tarsi are supplied with dark- 

 brown scopulae on the inferior surface. The palpi resemble the legs 

 in colour; the digital joint, which is the darkest, is supplied with 

 numerous short hairs, and has a small, curved, pectinated claw at its 

 extremity. The abdomen is oviform, pointed at the spinners, convex 

 above, and projects over the base of the cephalothorax ; the upper part 

 is clothed with short hairs, some long ones of a yellowish hue being- 

 interspersed ; it is of a brown colour, and has a short, transverse, 

 yellow bar at its anterior extremity ; the under part is black ; a broad 

 transverse, orange-coloured band, comprising the branchial opercula 

 and sexual organs, occurs at its anterior extremity, and from each of 

 the branchial stigmata a fine yellowish-white line passes nearly to the 

 spinners. The sexual organs are moderately developed, somewhat 

 oval in form, and of a red-brown colour. 



The male is smaller than the female, and its legs are much more 

 slender ; it is rather lighter coloured also, and the extremity of its ab- 

 domen, on the under side, has also an orange hue. The radial, which 

 is a little longer than the cubital joint of the palpi, has a long spine 

 directed forwards from each side of its base, and projects a strong and 

 somewhat pointed black apophysis from its extremity, on the outer 

 side ; the digtial joint has an oblong-oval form, and brown colour ; it 

 is convex and hairy externally, concave within, comprising the palpal 

 organs, which are well developed, complex in structure, with a strong 

 process curved round the base to the inner side, and their colour is an 

 intermixture of very dark and light red-brown. 



[The genus Olios, Walck. (Sarotes, Sund.) being found incapable of 

 including a large number of gigantic ThomisidoD of this group, discovered 



