NEOSCONA. 467 
shorter spines. The larger lobe of the apex of clavis of genital bulb 
broad and somewhat dilate. . . . . . . . oaxacensis, Keys. 
é'. Tibia ii. with a double, in places single, series of from 18-20 short, 
stout, curved spines. Apex of larger lobe of clavis not dilate, but 
bluntly pointed. Basal portion of underside of tibia ii. with the two 
long basal spines, but without any smaller ones. . . . . . . « conifera, sp. 0. 
6. Coxa iv. without a coniform spur beneath. 
a’. Apex of clavis of genital bulb distinctly bilobate, the two lobes formed 
by its apex and the lateral sharp curved spine. Tibia ii. with at least 
two or three long basal spines on the underside, as well as some outer 
marginal spines. 
a’. Tibia ii. straight or nearly so. 
a‘, Tibia ii. with two or three spines only on the underside. The 
clasping-spines on the inner side set in a distinct series and 
adpressed to the segment. 
a’, Clasping-spines on tibia ii. approximately the same length 
throughout (sec. Emerton) . . . . . . . . «+s benjamina, Walck. 
b°. Clasping-spines on tibia ii. unequal; several longer basal spines. [theis, Walck.] 
b*. Tibia ii. with 9-10 spines on the underside in the basal two-thirds. 
The clasping-spines on the inner side more scattered and not 
adpressed to the segment. . . . . . 1. 1 ew ww we) «minima, sp. 2. 
. Tibia ii. strongly curved, concave on the immer side . . . . . arabesca, Walck. 
&. eae of clavis not bilobate, the lateral spine being quite at the apex 
and slightly sinuous. Tibia ii. without spines beneath, three outer 
marginal ones excepted . . . . 1. 2 ee ee ee ee amulensis, sp. 1. 
Females. 
A. Femora 1., iL, iii., and sometimes iv., with a double series of spines beneath, 
in addition to the normal anterior median-dorsal spines. Abdomen 
oval-elongate. 
a. Scapus of vulva, seen in profile, distinctly geniculate in the spatulate 
apical portion. Abdomen with a central scalloped white band and a 
series of six white spots on each side. Median ventral spot very long, 
the lateral spots on the genital rima round. 
a‘. Size larger, length 12-17 mm. fFemora with very conspicuous stout 
spines beneath. Seapus, seen in profile, straighter in the basal 
portion. . . . oo. . . . + + + ©6Oaxacensis. 
b'. Size smaller, length 6 mm. Femora with spiniform bristles beneath. 
Scapus, seen in profile, more convex in the basal portion . . . . conifera. 
b. Scapus of vulva, seen in profile, strongly rounded throughout, not 
geniculate in the apical spatulate portion ; conspicuously tuberculo- 
rugulose above. Spatula broad and short, broadly rounded at the 
apex. Abdomen with central white dentate band, without series of 
lateral white spots. Median ventral white spot rounded. . . . . [cooksoni, Butl.] 
3 of 2 
