10 ARANEIDEA. 
species of this genus) misplaced and exaggerated in strength. The fang is curved, as usual, but it is a 
little bent also in the middle. 
The mawille, labiwm, and sternum are yellow-brown. 
The abdomen is long, slender, cylindrical ; in colours, ornamentation, and markings it appears to differ little 
(at least in the preserved examples) from that of 7. longa, from which, however, this spider may easily be 
distinguished by the narrower interval between the lateral eyes, and especially by the far longer and 
differently armed falces, as well as by the length of the radial and cubital and digital joints of the palpi, 
and the structure of the palpal organs. 
Hab. GuatemaLa, upper road to Chichochoc near Coban, Tamahu (Sarg); Costa 
Rica (Rogers); Panama, Bugaba (Champion). 
Tetragnatha pallida, sp. n. 
Adult female, length 43 lines; length of abdomen over 34 lines. Adult male, 33 lines; length of abdomen 
23 lines. 
The whole of this spider is of a straw-yellow, the abdomen, which is rather duller in its hue, thickly stippled 
over the upperside and sides with small distinct silvery spots, with no trace (in the adults) of any darker 
markings whatever ; in two immature specimens (if, indeed, they belong to this species) there are some 
detached linear dusky spots, forming two longitudinal lines along the upperside, between which the colour 
is darker than the rest. 
This species is even of a more attenuated and delicate form than either 7’. tenuis, J’. longa, or T. tenuissima, 
from all which it may easily be distinguished by the great length of the digital joints of the male palpi, 
and the armature and length of the falces. 
The eyes of the lateral pairs are divided by very nearly an equal interval from each other as those of the fore 
and hind central pairs of eyes, so that the eight eyes form almost two concentrically curved rows. The 
eyes of the hind central pair are separated by an interval rather less than that which divides each from 
the hind lateral on its side, and the four cubitals form an almost exact square. 
The legs are of great length and tenuity, 1, 4, 2, 3, and armed with (some of them) rather longish black 
slender spines. 
The falces are, in the female, equal to or longer than the cephalothorax; in the male, considerably longer. 
They are bent, but not very strongly, slender (but shorter in the female), strongly divergent, cylindrical, 
enlarging, but not greatly, towards their extremity, on the upperside of which, close to the end and 
directed forwards, is a strong curved denticulation, whose basal half is stronger than the other half, which 
is sharp and unguiform. The normal two rows, along which the fang lies at rest, are rather close together 
and none of its denticulations near the anterior end are out of place or much longer than the rest. The 
fang is simply curved. 
The palpi are moderately long, very slender; the cubital is not quite so long as the radial joint; the digital 
joint is of great length, distinctly longer than the radial and cubital joints together ; the main lobe of the 
palpal organs (which is rather large and prominent) does not extend more than one third from the base 
towards the extremity of the digital joint, and the process issuing from the lobe is very long, slightly 
twisted but straight, and in connection with a long pale spine reaches very nearly to the end of the digital 
joint. The radial joint is furnished with some long, prominent, slender, pale hairs. 
The abdomen is attenuated and cylindrical, but a little tapering from in front backwards in the female; it is in 
the adult entirely devoid of markings, excepting a blackish suffusion at the spinners. It is over three 
times the length of the cephalothorax. 
It is very possible that in this, as in some other instances, the colour of the spider may in life be of some tint 
or other of green, but I have no information on this point. 
Hab. Panama, Bugaba (Champion). 
Several examples. 
