METABUS.—TETRAGNATHA. 299 
Sternum elongate heart-shaped or subtriangular; the posterior extremity drawn out gradually into a fine 
point between the coxe of the fourth pair of legs. 
Abdomen large, short, broad, equally broad at each end, oval, very convex above, and projecting a good deal 
over the base of the cephalothorax. 
This genus is nearly allied to Meta, C. L. Koch. 
Metabus gravidus, sp. n. 
Adult female, length 5 lines. 
Cephalothorax yellow-brown ; the caput and sides of the thorax deep brown. 
Legs yellow-brown ; the femora broadly and obscurely banded with dark yellow-brown. The tarsi and metatarsi 
have no spines. 
Falces yellow-brown. 
Mazille and labium deep blackish brown, with a pale narrow border at their extremities. 
Sternum deep blackish. 
Abdomen deep brown, covered with closely approximated silvery and dull yellowish-white spots; the 
silvery spots in curved transverse lines round and just below the anterior margin of the upperside, and 
continued backwards along each side by a row of four similar silvery patches to just above the spinners, 
and two converging rows of similar but less distinct spots or patches along the median line, decreasing 
gradually in size and coalescing into short transverse lines above the spinners. ‘The sides are of a deeper 
brown, and have an oblique indistinct whitish-yellow stripe near the middle. ‘The underside is black- 
brown, with four whitish markings in a quadrangle rather longer than broad; the two foremost are 
short lines, the two hinder ones smaller, oblique, elongate spots. Spinners very short, blackish, 
compact. Genital aperture small and inconspicuous, but of characteristic form. 
Hab. GuaTEMa.a (Sarg). 
TETRAGNATHA, Latreille. 
Tetragnatha digitata, sp. n. 
Adult male, length 23 lines; adult female, length 3 lines. 
The general form and appearance of this species is normal. 
The cephalothorax is yellow-brown, the normal indentations marked by darker lines. . 
The eyes are on tubercular black spots. The posterior row is very slightly curved, the convexity of the curve 
directed forwards; that of the anterior row, which is strongly curved, is in the same direction. The 
interval between the hind-central pair is less than that between them and the hind-laterals. The 
central quadrangle is a square, with its fore side shorter than the hinder one. The laterals are well 
separated by rather less than the diameter of the fore-lateral eye. The height of the clypeus is about 
equal to the diameter of a fore-central eye. 
Legs long, slender, 1, 2, 4, 3, and of a pale dull brownish-yellow hue. Spines few, short, and fine. 
Palpi moderate in length; cubital and radial joints short and about equal in length. The digital joint has 
its anterior finger-like extension of abnormal length, equal to double that of the large and highly- 
developed palpal lobe, and as long as, or even longer than, the humeral joint of the palpus. The palpal 
organs are large, and have a long tapering corneous process directed forwards in close proximity to the 
finger of the digital joint, and in connection with it a slightly curved, slender, pointed spine extends 
beyond the extremity of the finger. 
Falces tolerably strong, prominent, divergent, rather more than half the length of the cephalothorax; a strong 
pointed tooth near the fore extremity towards the outer side and a longitudinal row of several strong 
teeth (diminishing in strength from the foremost backwards) towards the inner side, and another row 
below the fang. Colour dark yellow-brown. 
Mawxille normal in form, dark yellow-brown. 
Labiwm normal and of a deep black-brown colour. 
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