430 ARANEILDEA. 
ii. Fang of mandible withouta spur on the dorsal side towards the base. 
a’. Apex of basal segment of mandible with a long stout spur 
on the underside, directed straight forwards . . . . . antillana. 
b*. Apex of basal segment of mandible without spur on the 
underside. 
a’, Lower margin of fang-groove with seven teeth, the first 
further (more than its own length distant) from the 
second than the second is from the third . . . . . cognata. 
6°, Lower margin of fang-groove with six teeth, the first a 
little further (less than its own length distant) from the 
second than the latter is from the third. . . . . . digitata. 
B. Abdomen sometimes a little enlarged, but not gibbous above, 
viewed in profile ; elongate, parallel-sided. 
1. Legs clothed with fine hairs only, without spines. Fang of 
mandible with a conspicuous curved cusp on the dorsal 
margin towards the base . . . . 1. . 1. 1 we ee) otenuissima. 
2. Legs bearing spines, as well as fine hairs. Fang of mandible 
without cusp, or with a very minute one (g in figures), on 
the dorsal basal margin. 
* The spines towards the base of tibie i. and ii. not more 
than twice the diameter of the segment. 
a°*. Abdomen not more than three to four times longer than 
broad. Fang of mandible with a minute cusp on the 
dorsal basal margin . . . . toe. - . . alba, 
. Abdomen at least six times longer than broad. “Pang of 
mandible without cusp. 
a’. Lateral eye-tubercles almost in contact. Upper 
margin of fang-groove with 6 teeth . . . . . . tenuis. 
6°. Lateral eye-tubercles separated by one-half a diameter 
of the posterior tubercle. Upper margin of fang- 
groove with 5 teeth . . . . . . . mexicana, 
** The spines towards the base of tibia i. and j il. three to five 
times the diameter of the segment. 
a’, Basal segment of mandible with 7—7 teeth on upper and 
lower margin of fang-groove respectively. Spines at 
base of tibiz i. and ii. shorter, three times the width of 
the segment. . . . . pallida. 
. Basal segment of mandible with 10—10 ‘teeth on upper 
and lower margin of the fang-groove respectively. 
Spines at base of tibize i. and ii. longer, five times the 
width of the segment. . . . - 2 + . gracilis. 
Notz.—The following species are unknown to me:—T7. mandabulata, Walck., T. banksi, F. P.-C. (nom. nov.) 
T. orizaba, Banks, and T. pallescens, F. P.-C (nom. nov.), 
and their characters cannot therefore be given in 
the Table. 
