432 ARANEIDEA. 
4. Tetragnatha alba, sp.n. (Tab. XL. figg. 15, 15 a-d, 3.) 
Type 3, gynetype @, in coll. Godman & Salvin. Total length, 5 7, 2 10 millim. 
Lateral eye-tubercles well separate, one diameter of the posterior lateral eye-tubercle apart. The legs are 
moderately densely clothed with fine, erect, and oblique hairs and comparatively short spines. In the 
male the mandible exhibits the “large tooth” on the upper margin of the fang-groove, with anteriorly one 
small adjacent tooth and a smaller one at the apex, and posteriorly five smaller teeth ; on the lower margin 
are eight small teeth. The conductor of the palpus is geniculate and slightly spoon-like at the apex ; 
the tibia and patella equal in length ; the cymbium not bifid at its apex. 
9. Abdomen slightly larger anteriorly, but not gibbous above; fang of the mandible bearing a minute cusp 
at its base on the dorsal side. Body and legs yellow, the latter not annulated; the abdomen dorsally 
covered with silver-white spangles, ventrally dark brown, with two longitudinal, parallel, white lines, the 
intermediate space between them being black. The upper margin of the fang-groove with a single larger 
and broader tooth at the apex, followed by a more remote group of five smaller equidistant teeth ; the lower 
margin bearing a small tooth at the apex, with a more remote group of four or five smaller equidistant teeth. 
Hab. Mexico, Orizaba, Cuernavaca, Amula, Omilteme (ZH. H. Smith) ; GUATEMALA, 
Cubilguitz, Coban, Chilasco (Sarg); Costa Rica (Sarg, Tristan, Rogers); Panama, 
Bugaba (Champion). 
This species is closely allied to 7. straminea, Emerton. 
5. Tetragnatha tenuissima. (Tab. XL. figg. 16, 16 a-c, ¢; 17, 17 a-c, 2.) 
Tetragnatha tenuissima, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. i. p. 9, t. 3. figg. 1, 1 a—d 
(3), 2, 2a, 6 ( 2)". 
Type ¢, gynetype 2, in coll. Godman & Salvin. Total length, ¢ 85, 9 11:5 millim. 
Lateral eye-tubercles in contact. Legs clothed with fine oblique hairs only; no spines. Fang of mandible 
in the male without cusp on the dorsal basal margin, very long, sinuous, and indented in the middle. 
Upper margin of the fang-groove with the “large tooth” very conspicuous and long; two large curved 
teeth close to the apex, and two minute cusps in front of and beneath the “ dorsal spur,” and a series of 
four equidistant small teeth posteriorly ; the lower margin bears nine or ten teeth, the first being the 
largest and situated at the apex of the segment. The tibia of the palpus is shorter than the patella; 
the conductor concave, somewhat spiraloid, and finely attenuate at its apex, the embolus being straight 
and filiform at the tip; the cymbium not bifid at the apex. 
Q. Abdomen scarcely enlarged anteriorly, and not gibbous, covered with silvery-yellow spangles dorsally and 
laterally, dull yellow throughout the ventral area; otherwise the body and legs are yellow or yellow- 
brown. Mandible very large and divergent; the fang long, sinuous, with a conspicuous cusp on the 
dorsal basal margin (less distinct in immature specimens), deeply indented at the middle inner 
margin ; the fang-groove bearing on the upper margin two more adjacent teeth towards the apex, the 
second being the longest, and a remote series of fine, long, adjacent, equidistant teeth posteriorly ; on the 
lower margin are eight or nine teeth. , 
Hab. Mexico, Teapa in Tabasco (H. H. Smith) ; Guatemata, Coban, Tamahu (Sarg) ; 
Costa Rica (Rogers); Panama, Bugaba (Champion !). 
6. Tetragnatha tenuis, (Tab. XLI. fige. 1, 1a-c, 3; 2, 2.) 
Tetragnatha tenuis, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. i. p. 8, t. 1. figg. 12,12 a,5(?) 
18, 13a-d(¢)’. oo. , 
Type d, gynetype 2, in coll. Godman & Salvin. Total length, ¢ 8, 2 9 millim. 
Lateral. eye-tubercles in contact or nearly so. Legs clothed with fine hairs and spines. The fang of the 
mandible in the male has a small cusp on the inner margin near the base. The *“ large tooth” is not 
