TETRAGNATHA., 433 
present, but there is a series of seven teeth graduated in size, the first being much the longest, on the 
upper margin of the fang-groove, with five small teeth on the lower margin. The tibia of the palpus is 
one-fourth longer than the patella, the conductor not dilate at its apex, and the embolus straight, except 
at its base, where it forms a wide loop; the cymbium is not bifid at its apex. 
2. Abdomen long, of uniform width, not gibbous anteriorly. The mandible with 6—6 small teeth on each 
margin of the fang-groove; the fang itself not bearing a dorsal cusp towards its base. The body dull 
yellow-white, the dorsal and lateral areas of the abdomen spangled with silver-white; ventrally the 
abdomen is dull white-brown throughout its length. 
Hab. Guatemata, Cahabon (Sarg1); Panama, Bugaba (Champion !). 
7. Tetragnatha cognata. (Tab. XLI. figg. 3, 3a-c, ¢; 4, 2.) 
Tetragnatha cognata, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. i. p. 7, t. 2. figg. 10, 10 a—d 
(fo), ll, lla,b(¢)’. 
Type ¢, gynetype 2, in coll. Godman & Salvin. Total length, ¢ 45, Q 9 millim. 
Lateral eye-tubercles in contact. Legs clothed with fine hairs and short 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 present, but 
there is a series of six teeth on the upper margin of the fang-groove, the second in the series being the 
largest ; the lower margin bears a series of six irregular teeth. The tibia of the palpus is only slightly 
longer than the patella; the conductor is broad throughout, not dilate apically, the embolus sinuous, 
forming a small loop basally ; the cymbium is not bifid at its apex. 
9. Abdomen distinctly gibbous anteriorly; the upper and lower margins of the fang-groove bearing 7—7 
teeth respectively ; the fang without a dorsal, basal, marginal cusp. 
Hab. GUATEMALA (Sarg 1). 
8. Tetragnatha antillana. (Tab. XLI. figg. 5, 5a-c, g; 6, 64, 2.) 
Tetragnatha antillana, Simon, P. Z. 8. 1897, p. 868°. 
Type 3, gynetype 2, in Mus. Brit. Total length, g 12, 9 15 millim. 
Lateral eye-tubercles usually united by a fine black line; the eyes themselves one and a half diameters of a 
lateral posterior eye apart. Legs clothed with fine, erect, and oblique hairs and short spines. The 
mandible of the male has no “ large tooth,” but two long curved teeth at the apex form with the “ dorsal 
spur” a conspicuous group of three rather hook-like teeth ; besides these the upper margin of the fang- 
groove bears a very small tooth near the large pair, and a more remote group of seven small teeth; the 
lower margin bears a series of nine small teeth. The fang itself bears no basal cusp dorsally or beneath, 
but there is a sharp angle on the inner margin just opposite the third tooth of the upper margin. The 
conductor of the palpus is not geniculate, nor markedly dilate, the embolus being sinuous; the cymbium 
(the larger detached portion of the tarsal sheath) is distinctly bifid at its apex. The tibia of the palpus 
is twice as long as the patella. 
9. Abdomen gibbous anteriorly ; ; the mandible differs from that of all other species of the genus at present 
recorded by the stout sinuous spur at the apex beneath ; a small tooth lies adjacent to ‘it, and there is a 
more remote series of eleven small teeth; the upper margin shows a long slender tooth at the apex, : 
a smaller adjacent tooth, and a more remote series of ten very small teeth. 
Hab. Mexico, Teapa, Atoyac (7. H. Smith), Misantla (Godman); GUATEMALA; Costa 
Rica (Sarg).— ANTILLES, St. Vincent ?. 
(Sy) 
A 
£4 
BIOL. CENTR.-AMER., Arachn. Aran., Vol. II., February 1903. 
