8 ARANEIDEA. 
nodiform. The digital joint is long. The palpal organs very much of the ordinary form common to this 
genus, with a twisted prolongation at their extremity, which reaches quite to the end of the digital joint. 
In the female the falces want the curved tooth towards the fore extremity of the upperside. 
Hab. Guatemata, Volcan de Fuego, Cunen, Santa Ana, Cahabon (Sarg). 
Several females and a single male were contained in Mr. Sarg’s Guatemalan collection. 
Tetragnatha guatemalensis, sp. n. 
Adult female, length 34-5 lines; adult male, 3-4 lines. 
This species is also very nearly allied to 7’. ewtensa (Linn.), but may be distinguished by the greater length of 
the abdomen. The curved denticulation near the upper fore extremity of the falces of the male is 
less distinctly bifid at its point. The fang also is shorter, and near, a little way behind, its point, when 
at rest, is a large obtuse tubercular prominence. The palpi and palpal organs of the male are also very 
nearly alike in the two species, but in the present one the radial joint appears to be proportionally rather 
longer, being at least double the length of the cubital joint. The legs are also longer, especially those of 
the first pair, and the abdomen of the female is of a more regular cylindrical form. 
Hab. Guaremata, Cahabon, Laguna de los Coheteros near Coban (Sarg, Champion). 
Both sexes were contained in the collections of Mr. Sarg and Mr. Champion. 
Tetragnatha tenuis, sp. n. 
Adult female, length 4 lines; adult male, 23 to a little over 34 lines. 
The whole of the fore part of this spider is a dull pale yellowish-brown; the abdomen is long, slender, cylin- 
drical, at least, or over, three times the length of the cephalothorax in the male and four times in the 
female; it is of a uniform dull yellowish-drab, tolerably thickly spotted above and on the sides with 
minute silvery spots; in one example there are traces of a longitudinal, rather darker band along the © 
upperside, with some deeper linear spots along its margins. 
The legs, which are of great length and tenuity, 1, 2, 4, 3, have at the articulation of the joints a slight brown 
suffusion. The spines are few and exceedingly fine. 
The eyes are in the ordinary position ; those of each lateral pair are distinctly separated by at least a diameter 
of the anterior eye. 
The falces are much shorter than the cephalothorax, bent, divergent, a very little gibbous on the outer side 
towards the anterior extremity, near which, on the upperside, is a moderate-sized denticulation, slightly 
bent near its obtuse or very slightly notched extremity; below this, on the inner side, is another 
(belonging, in fact, to one of the two rows within which the fang lies at rest) as long and strong, but 
straight and sharp-pointed. The fang is simply curved, and about three fourths the length of the falx; a 
little way from its point is a small protuberance. 
The palp2 (male) are rather short, the cubital and radial joints of equal length. The digital joint is moderately 
long ; and the main lobe of the palpal organs is rather large and prominent and extends halfway to the 
extremity of the digital joint, and the process issuing from the lobe is very nearly straight and reaches to 
the end of the joint. | 
The sexes are very nearly alike, though, as is usually the case, the legs of the female are not so long, and the 
falces of that sex are shorter and have no denticulation on the upperside of the fore extremity. 
Hab. GuatemaLa, Cahabon, upper road to Chichochoe near Coban (Sarg); Panama, 
Bugaba (Champion). 
Both sexes were contained in Mr. Champion’s collection from Bugaba, Chiriqui, and 
females in that of Mr. Sarg. It is probable that in the living examples green would be 
the preponderating colour in this, as well as in some other species, whose colours in 
spirit of wine are dull yellowish, or drab, or dull yellow-brown. 
