428 ARANEIDEA. 
honed 
* Legs armed with stout spines, as well as fine hairs. 
a. The conductor of the embolus of palpus not geniculate at or 
towards the apex, nor dilate at the apex itself, simple, 
subaculeate . . re eee 
b. The conductor of the embolus of palpus geniculate towards 
the apical third, or at the apex itself; dilated to form a 
more or less spoon-like cavity. 
a’. Lateral eyes adjacent, their black circumferences being 
in contact. The conductor of the embolus exhibiting at 
its base two inconspicuous spiraloid lobes (see 4 in 
figures). 
a’. Apex of cymbium of palpus vermiform, strongly curved, 
and attenuate. Conductor of the embolus geniculate 
from the apical third. Fang of mandible with a 
more or less distinct cusp on the dorsal side towards 
its base ow ee we ee se ew 
b?, Apex of cymbium of palpus rounded, not attenuate, 
and vermiform. Conductor of the embolus geniculate 
at the apex only. Fang of mandible without a dorsal 
basal cusp ~ 2 ee oe ee we we ee 
b'. Lateral eyes widely separate; the black circumferences 
themselves at least one diameter of the posterior lateral 
eye-tubercle apart. The conductor of the embolus 
exhibiting at its base a single conspicuous spiraloid lobe 
(see 5 in figure) a 
** Legs not armed with spines, but clothed with fine hairs only . 
B. Mandibles not exhibiting one very long conspicuous tooth on 
the upper margin at the apical third or fourth. 
a*, Fang of mandible with a small, but distinct, cusp on the 
inner margin beneath, towards its base. 
a’. Embolus of palpus straight to its apex; the conductor 
forming at its base a concave spiraloid channel. The 
tuba, or basal part of the embolus, making a much wider 
loop over the bulb behind Loe ee 
6°. Embolus of palpus sinuous to its apex; the conductor open 
to its base, not forming a spiraloid channel. The tuba 
making a much narrower loop over the bulb behind 
6*, Fang of mandible without cusp on the inner margin beneath 
towards its base. 
+ Tibia of palpus not less than one-half the length of the tarsus. 
a‘, Apex of basal segment of mandible above with two large 
curved teeth, directed forwards and downwards, situated 
close to the dorsal spur. Apex of cymbium of palpus 
distinctly bifid . 
tropica, O. P.-Cambr. 
guatemalensis, O. P.-Cambr. 
dentigera, sp. 0. 
alba, sp. un. 
tenuissima, O. P.-Cambr. 
tenuis, O. P.-Cambr. 
cognata, O. P.-Cambr. 
antillana, Simon. 
