454 ARANEIDEA. 
9. Tetragnatha bidens, sp.n. (Tab. XLI. figg. 7, 7 a-¢, 3.) 
Type, d, in coll, Godman & Salvin. Total length 9 millim. 
Lateral eye-tubercles well separate, nearly twice the diameter of the posterior eye-tubercle apart. Legs 
clothed with both spines and fine, erect, oblique hairs. Fang of mandible without cusps ; upper margin 
of basal segment with two small teeth near the apex and a remote group of six small teeth; the “ large 
tooth” is absent; the lower margin bears at the apex two conspicuous teeth, the second by far the largest, 
and a series of five small teeth. The tibia of the palpus is about one-fourth longer than the patella ; 
the conductor is geniculate and spoon-like at its apex; the cymbium is not bifid at the apex. 
Hab. Muzxico, Orizaba, Vera Cruz (H. H. Smith). 
10. Tetragnatha mexicana. (Tab. XLI. figg. 8, 8a-d, ¢; 9, 2.) 
Tetragnatha mexicana, Keyserl. Verh. zool.-bot. Ges. Wien, Xv. p. 854, t. 21. fig. 18 (¢) (1865) '. 
Tetragnatha longa, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. i. p. 9, t. 2. figg. 4, 4 a-d (¢), 
5,5a,56(¢@)’. 
Type, @, in Mus. Brit; deuterotype, 3, in coll. Godman & Salvin. Total length, 9 10°3, ¢ 9 millim. 
Lateral eye-tubercles separated by one-half a diameter of the posterior tubercle, the eyes themselves by one 
and a quarter diameters of a posterior-lateral eye. Legs clothed with fine hairs and spines. Fang of 
mandible without cusps; basal segment with a single short broad tooth on the upper margin near the 
apex, and a remote group of six fine teeth besides, the “ large tooth”? being absent; the lower margin 
bears four equidistant teeth, the first at the apical angle. The tibia of the palpus is about one-fourth 
longer than the patella; the conductor presents basally four thin spiraloid lobes, and is slightly 
geniculate at the apex, but not dilated; the cymbium is not bifid at its apex. 
2. Abdomen very long, and uniform in width throughout, with a broad, yellowish, central, longitudinal, dorsal 
band, with a narrow silver line in the centre and a row of dark spots on each margin; this band is 
flanked by a broad band of silver spangles, the ventral area being dark brown, black down the centre, 
more or less spangled with silver-yellow on the sides. The fang is without cusps, the upper margin of 
the basal segment of the mandible bearing five teeth, the third being the largest, the lower margin with 
one tooth at the apex, and a remote group of five closely situated teeth. 
Hab. Mexico, Vera Cruz (Sallé!), Teapa in Tabasco, Atoyac (H. H. Smith); Guats- 
MALA (Sarg ”). 
The type (?) of Z. mexicana (probably not fully developed) is now before me, and 
it is identical with that of 7. longa, and with other examples in the collection. 
11. Tetragnatha gracilis, (Tab. XLI. figg. 10, 10a, 0, ¢; 11, 2.) 
Eugnatha gracilis, O. P.-Cambr. Biol. Centr.-Amer., Arachn, Aran. 1. p. 11, t. 2. figg.1, la-d( $), 
2,2a,b(¢)’. 
Type 3d, gynetype 2, in coll. Godman & Salvin. Total length, ¢ 9, 9 11:5 millim. 
Lateral eye-tubercles well separate, two diameters of the posterior tubercle apart. Legs clothed with fine, 
erect, and oblique hairs, and with very long slender spines. The fang of the mandible is without cusps ; 
the upper margin of the fang-groove of the male bears eight long slender teeth, the lower margin also 
bears a similar number, the apical tooth being the largest; the “long touth” is absent. The tibia of the 
palpus is from two to three times longer than the patella; the conductor is long, narrow, and attenuate 
towards the apex, not geniculate nor dilate; the embolus is slightly curved at its apex. 
g. Abdomen very long, slightly enlarged anteriorly, but not gibbous; the body and legs entirely pale yellow 
the abdomen, dorsally and laterally, densely covered with silvery-yellow spangles, the ventral area being 
dull yellow throughout its length. The fang of the mandible is without cusps, the upper and lower 
