154 ARANEIDEA. 
Males. 
A. Tibia of palpus with two spurs, an upper and lower, on the outer side. 
i. Upper spur plain, without any basal spur on the inner, or lower, 
side, stout, sinuous. Upper spur stout, gradually attenuate and 
slightly sinuous to the apex. Lower spur curved upward, not 
enlarged, and slightly bifid at the apex. Bulb with a black 
hammer-headed process directed downward and backward from 
the centre. A stout black process is directed from the apex of 
the bulb towards the point of the upper tibial spur, but there is 
no spine as in 7’, studiosus in a similar position, neither is there 
any spur on the inner side of the bulb at its base. ‘Tibia very . 
broad. . . . Neen ee . oo. ee ee jocosus, O. P.-Cambr. 
ii. Upper spur with another ahort sharp spur on the inner, or lower, 
side, about one-third from the base. Upper spur very slender 
towards its apex, but enlarged at the base. Lower spur short, 
curved upward, enlarged, slightly concave and bilobate at its 
apex. Bulb with a short sharp black spine on the outer side, 
its point directed backward. Inner basal angle furnished with 
astout black cusp... 2... ee ee ee . . . Sstudiosus, O. P.-Cambr. 
B. Tibia of palpus with only one spur on the outer side, the lower 
one. The upper represented only by an enlargement of the upper 
anterior angle. 
i, Bulb not convoluted in the centre; its apex bearing a stout black 
somewhat bifurcate process, and without any central hammer- 
headed process . . . ee eae Sits . intentus, O. P.-Cambr. 
ii. Bulb convoluted in the centre, bearing a stout hhammer-headed 
chitinous process directed backward and downward. Bulb 
encircled by a long fine spine, whose filiform apex curls in over 
the bulb from the outer side . . . . . . . . . « . « pauper, O. P.-Cambr. 
Females. 
These can be separated by the form of the vulva, though it is difficult to give a 
detailed intelligible account in words of the structure. 
A. Vulva with a central chitinous wedge-shaped tongue. 
1. Tongue large and long, extending from the anterior margin to the 
posterior. The tongue is not raised from the surface posteriorly. studiosus. 
2. Tongue very small, inconspicuous, extending over about one-third 
of the length of the epigynal area. A kidney-shaped spermatheca 
lies on each side posteriorly, the apex of the tongue falling just 
between the anterior ends of the spermathece. The tongue is 
raised from the surface posteriorly . . . . . . . . . . « éntentus. 
