388 ARANEIDEA. 
1. Lower branch of the paracymbium conspicuous and strongly 
curved, falciform. 
a. Embolus of bulb with a conspicuous, stout, curved spur 
standing at right angles from the basal portion (see 
Emerton’s figure) . . . . . . . 2 es « « frondeum, Hentz. 
6‘. Embolus of bulb without a spur at its base . oe e 6 + 6evexum, Keyserl. 
2. Lower branch of the paracymbium much less conspicuous, 
with a very fine straight point only on the lower side . . electum, O. P.-Cambr. 
B. Paracymbium of the palpal bulb, on the outer side, viewed 
laterally, not deeply bifid on the upper margin. 
a’, Paracymbium U-shaped, very stout, the lower branch being 
broadly pointed, the upper branch rounded . . . . . « thorelli, O. P.-Cambr. 
6°. Paracymbium not U-shaped. 
a’. Upper branch of the paracymbium forming a long curved 
spine. | 
a‘. Upper branch of the paracymbium broader at its base and 
rugulose above, longer . . ... . » 2 « « niveum, O. P.-Cambr 
-6*. Upper branch of the paracymbium not broader, not 
rugulose at its base above, shorter . . we uncatum, sp. 0. 
6°. Upper branch of the paracymbium represented by a small 
cusp only, lower branch forming a rounded lamella. . . ¢repidum, O. P.-Cambr. 
II. Paracymbium of the palpal-bulb absent . . . . . . . . .~ vittatum, O. P.-Cambr. 
Females. 
A. Vulva exhibiting a small circular depression, or pit, on the summit 
of a low convexity. 
* Vulval cavity without an inner convex prominence ; posterior 
margin slightly reflexed . . 2. 2. 2 1 1 ee we ew eveRUM. 
** Vulval cavity with an inner convex prominence; posterior 
margin plain, not reflexed . . . . «© © © © © «© « « vittatum. 
B. Vulva not exhibiting a circular depression. 
1. Vulva exhibiting a deep transverse cavity close to the genital 
rima. 
a. Posterior margin of the cavity much curved upward and 
pointed in the middle, exhibiting a dark orifice on each side 
within the cavity. Spermathecal spots two, elongate-piriform. thorelli. 
6. Posterior margin of the cavity less curved upward and not 
pointed in the middle, without visible dark orifices. Sperma- 
thecal spots four, circular. . . 1 6 1 we we ee) «Cxcavatum, sp. n. 
2. Vulva not exhibiting a transverse cavity, but with two small 
orifices, about two diameters apart, near the genital rima. 
_Spermathecal spots two, circular... 1 1. ee ee niveum. 
Nore.—I have not been able to include 7. frondeum and JT. trepidum in the Table of the females. 
J’, splendidum (Banks) cannot be certainly identified from the description. 
