318 



It may bo distinguished at a glanco from all its British con- 

 geners by the markings on the stornum. 



OXYPTILA BLACKWALLII. 



Oxyptila dlackwallii, Sim., Arachn. de Franco, torn, ii., p. 



231, pi. vii., fig. 22. 

 Thomisus olavbattjs, Blackw., Spid. Great Brit, and Irel., p. 

 87, pi. iv., fig. 52. 



The length of the male is 1^ lino, and the female is scarcely 

 longer, but more robust. 



This curious spider may be known at once from others of tho 

 genus, found in England, by the abdomen, as well as the fore 

 part of the caput, being furnished with numerous short, strong, 

 spine-like bristles, clavato (or clubbed) at their extremities. 



The cophalo-thorax of the male is of a dark yellow-brown 

 colour. The longitudinal band, and central marking bohind the 

 eyes are indistinct, but of a roddish yellow-brown hue, bettor 

 defined in the female than in the male. The clavate bristles 

 on the caput are longer than those on the abdomen, but are loss 

 incrassated at the extromities, which are of an oval form. 



The legs are yellow-brown, the femora of the first and second 

 pairs being much the darkest. Three spine-like bristles of a 

 similar form to those on the caput form a 6hort longitudinal 

 line on the upper side of the femora of the first pair. 



The palpi are short and somewhat liko the legs in colour. Tho 

 outer extremity of the radial joint is strongly produced and 

 terminates in a longish prominent, tapering, curved, pointed, 

 spine-like, apophysis, and its under sido has a strong obtuso ono 

 indented at its extremity. The palpal organs aro of simplo 

 structure. 



Tho abdomen is short, round-oval, truncate before, broader and 

 rounded bohind. The upper sido is of a roddish yollow-brown hue 

 with numerous black markings ; among those may be tolerably 

 clearly traced, on tho fore half, the longitudinal one, which is of 

 a paler yellow-brown margined with black elongato spots and 



