184 Transactions. — Zoology. 



Sub-fam. Thomisin^e. 

 Gen. Xysticus, C. Koch. 



Xysticus albo-brunnea, sp. nov. 



Fern. — Ceph.-th., long, 1-8 ; wide, 1-8. Abd., long, 3 ; wide, 

 2-5. Legs, 2-1, 4, 3 = 4-9, 4, 3-1 mm. 



Ccphalothorax creamy-brown, passing into greenish-yellow 

 about ocular region, densely mottled with dark-brown, except 

 round margin and eye-area ; exhibits a creamy-olive, broad- 

 lanceolate figure, whose short haft projects towards posterior 

 centre-eyes ; integument covered with papilla? ; the best-de- 

 veloped project long, strong, claviform, black bristles ; ovate, 

 lateral marginal compression slight ; squarely truncated ; sub- 

 aplanate, sides steep ; clypeiis directed sensibly inwards, height 

 about equal to interspace dividing anterior central eyes; pro- 

 jecting vertically beneath margin of clypeus is a stout, roundly- 

 conical, greenish-yellow process ; profile-line ascends from 

 stalk at an angle of nearly 80°, slopes visibly across occiput, 

 dips abruptly from dorsal eyes. 



Eyes form two somewhat evenly recurved rows ; posterior 

 eyes distributed at nearly equal distances, posited on tolerably 

 prominent tubercular elevations ; hind-centrals sensibly larger 

 than fore-median pair, form with them a broad trapezoid, 

 rather wider behind than long ; anterior centrals divided by a 

 greater interval than that which separates them from the side- 

 eyes next to them ; laterals seated on strongish tubercles ; fore- 

 pair plainly exceed hind-pair in size ; distinctly larger than 

 centrals. 



Falces yellowish pea-green, apices light-brown, tints sepa- 

 rated by a dark-fuscous band ; conical in outline, deplanate, 

 nearly as broad as long ; project at same plane as facial space ; 

 armed with strong papillaeform, and spine-like bristles. 



Maxilla light-brown, centres occupied by greenish-yellow, 

 elliptic marks bordered with dark-brown ; elongated, gradually 

 dilated, fore-third pointed ; inclined over labium, which is 

 clouded with dark-brown; oval, fully two-thirds length of 

 maxillae. 



Sternum greenish-yellow, apex fuscous-black ; series of 6 

 triangular spots project from between coxa3 ; elongate mark 

 beneath lip, of the same blackish colour ; round-cordate. 



Legs light-brown, reflecting more or less a greenish tone ; 

 blotched and spotted, more especially on thighs of first pair, 

 with fuscous-chocolate, resolved somewhat into annuli at ex- 

 tremities of joints ; two first pairs of about equal strength ; 

 second slightly surpasses first in length ; third pair as strong 

 and nearly as long as fourth ; armature, few erect papillaeform 

 hairs, and numerous spine-like bristles ; tibiae and metatarsi of 

 first and second legs, 6 spines ; of third leg, 1 on each joint. 



