98 ARANEIDEA. 
extremity and lying in close proximity to the underside towards the base of the digital joint. This pro- 
cess gives a bifid appearance to the radial apophysis. There is also a strong slightly curved process at the 
extremity beneath the radial joint, rather enlarged at its end. The digital joint is of moderate size, and 
exceeds in length the radial and cubital joints together. The palpal organs are surrounded by a black 
tapering sharp-pointed spine, at the base of which is a large curved somewhat irregular process. 
The falces are moderate in length and strength, subconical, and similar in colour to the cephalothorax. 
The mawille, labiwm, and sternum (which last is oval) are similar in colour to the legs. 
The abdomen is of a somewhat cylindrical oblong form, pointed behind, this portion being of a quasi-segmentate 
structure. It is of a dull luteous-yellowish hue, marked on the upperside with two parallel slender white 
lines along the middle of the fore part, followed by a series of more or less distinct slightly angular lines 
or chevrons of a similar kind. The sides of the abdomen are closely mottled with white, and the upper- 
side is furnished thinly with long spine-like bristles issuing from minute red-brown tubercles. 
The female resembles the male in colours and markings, the abdomen being perhaps more suffused with white. 
The legs are shorter, and beneath the metatarsi of the first and second pairs the spines are more 
regularly arranged in pairs. In one or two specimens (which may perhaps prove eventually to be of a 
distinct species) the sides of the thorax have traces of white veinings and mottlings, and the anterior sides 
of the femora of the legs are also similarly mottled. The genital aperture is of moderate size and very 
characteristic form. 
Hab. Panama, Bugaba (Champion). 
Tmarus decens, sp. n. 
Adult female, length 33 lines. 
The cephalothorax has the thoracic region more gibbous than usual; and the clypeus, which equals or very 
slightly exceeds in height half that of the facial space, is very prominent. It is of a dark dull yellowish- 
brown colour, almost entirely covered with cream-white mottlings, converging lines, and markings, which, 
however, do not overrun the hinder slope. 
The eyes are normal in general position and relative size, though the two transverse curved lines formed by 
them are nearer together than usual. The four centrals form a quadrangle whose posterior side is longer 
than the other three sides. 
The legs are moderate in length and strength, 1, 2,4, 3. They are dull yellowish, much marked with white 
and spotted with yellow-brownish, and the under or anterior sides of the femora and genua of the first and 
second pairs are dark brown; beneath the tibie of the first and second pairs are four, and beneath the 
metatarsi five, pairs of rather short spines very regularly arranged. 
The falces are moderate in size, subconical, and similar in colouring and mottling to the cephalothorax. 
The maxille are yellowish mottled with white. 
The labium and sternum are dark brown. 
The abdomen is of an elongate subpentagonal form, with the sides towards the hinder part roundly protuberant ; 
apparently it has a somewhat coriaceous epidermis. Its colour is dull cream-whitish tinged with brownish, 
marked, lined, and spotted with black above, the most conspicuous black marks being one on each side 
near the protuberant part, and another on each side near the spinners. The sides are strongly rugu- 
lose. The underside has a broad longitudinal dull blackish band along the middle, with a whitish 
stripe edged with a deep red-brown irregular line of spots. The genital aperture is obscure, but of 
characteristic form. 
Hab. Panama, Bugaba (Champion). 
