Blackball — Spiders captured in the SeycJtelles Islands. 21 



inferior row consists of about sixteen teeth. The lip is semicircular 

 and prominent at the apex ; the maxillae are long, straight, and 

 enlarged at the extremity, which is rounded on the inner side, and 

 angular and prominent on the outer side ; the sternum is heart-shaped, 

 with small eminences on the sides, opposite to the legs ; the legs are 

 very long, slender, and provided with hairs and spines ; the first pair 

 is the longest, then the second, and the third pair is much the 

 shortest ; each tarsus is terminated by claws of the usual number and 

 structure. These parts are of a pale, dull-yellow colour ; the inner 

 margin of the maxillte is soot-coloured, and the base of the lip has a 

 Tcd-brown hue. The palpi are long, slender, and of a yelloMdsh- white 

 colour ; the radial is longer than the cubital joint and clavate ; the 

 digital joint consists of two narrow, membraneous parts clothed with 

 hairs externally, one of which is much longer than the other ; with 

 the base of these parts the palpal organs are connected ; they are 

 moderately developed, glossy, sub-globose, and terminate in a promi- 

 nent, curved spine, enveloped in membrane, which is recurved and 

 somewhat enlarged at its extremity, and they are of a pale red-brown 

 colour. The abdomen is long, sub cylindrical, and tapers to its 

 extremity, which projects a little beyond the spinners ; it is of a dull- 

 yellowish colour retioulated with brown lines ; a ramified brown line 

 -extends along the middle of the upper part, and a longitudinal band 

 of the same hue, freckled with minute yellowish-white spots, and 

 bonnded laterally by lines composed of numerous similar spots, occurs 

 in the middle of the under part ; the branchial opercula have a yel- 

 lowish-brown hue, and there are a few white spots about the base of 

 the spinners. 



The immature female is rather darker coloured than the adult 

 male. 



Tetkagis-atha Thokellii, n. sp. [Meta, Koch]. Plate 2, fig. 15. 



Length of the female, ^th of an inch ; length of the cephalothorax, 

 iV ; breadth, tV ; breadth of the abdomen, xV ; length of an anterior 

 leg, t ; length of a leg of the third pair, -J. 



The abdomen is robust, subcylindrical, projects a little over the 

 base of the cephalothorax, and curves abruptly downwards at its poste- 

 rior extremity ; the upper part and the superior region of the sides 

 are of a bright silvery- white colour reticulated with fine brovaai lines, 

 the latter having a slight golden tinge ; a pale-brown ramified band 

 extends along the middle of the former to the commencement of the 

 posterior curve, and on each side of the curve there is a series of black 

 spots that diminish in size as they approach the spinners ; a broad 

 brown band, palest in the medial line, whose upper margin is irre- 

 gular, occupies the inferior region of the sides ; the under part has a 

 longitudinal brown band in the middle, comprising a dull-yellowish 

 line, and is bounded laterally by a pale-brown line spotted with 

 minute silvery spots ; the branchial opercula have a brownish-yellow 

 colour, and that of the sexual organs, which are moderately developed, 

 is dark reddish-brown. The cephalothorax is compressed before, 



