MAHADIVA.—AMAMRA. 55 
incrassated at their fore extremities; those of the second pair are short, a little bent, and considerably 
enlarged beneath, and at the middle of the enlargement is a strong prominence directed forwards, furcate 
at its extremity, each prong of the fork ending with a strong articulated spine, the lower one stronger 
than the upper; in front of this, halfway to the extremity of the joint, is a smaller prominence, similarly 
terminated, and a strong spine quite at the extremity of the joint. The form and armature of this joint is 
(there can be little doubt) a character of the male only. 
Falces rather long, weak, prominent at their base in front, straight, vertical, of a dull pale yellowish colour 
suffused with dark olive-brownish on the basal half. 
Palpi short, the palpal bulb of large size ; cubital joint very short, but produced in front; radial joint also very 
short, but produced on each side. The hinder extremity of the digital joint terminates with a strong 
curved horn-like process, the extremity of which is red-brown, truncated, and directed outward and 
upwards. The palpal organs are highly developed, very prominent, complex, with corneous processes and 
spines; one of these, long, curved, and tapering to a blunt point, projects on the outer side, and others 
project conspicuously at their extremity. 
Mazille and labium blackish-brown tipped with pale whitish. 
Sternum black-brown. 
Abdomen rather large, broader than long, the upper surface flattened-convex, subtriangular both before and behind, 
with a small subconical eminence at each lateral fore corner, and some rudimentary tubercular eminences 
along the hinder margin; these latter are of a whitish-yellow hue, as also is an irregular patch on each 
side of the median line of the anterior part. The rest of the upperside is spotted or reticulated with 
black and whitish-yellow, with four unequal spots, of a reddish-yellow-brown, forming a square on the 
middle. The sides are marked with blackish lines forwards, and the underside has a large, somewhat 
quadrate, brown patch at its anterior extremity. 
Hab. Panama, Volcan de Chiriqui (Champion). 
A single example. This spider may easily be distinguished from J/. verrucosa, 
Hentz, by the absence of the strong round tubercular eminences at the hinder half 
of the abdomen and the much longer legs of that species, besides other differences of 
colour and markings, and of structure of the palpal organs. 
AMAMRA, gen. NOV. 
Cephalothorax much longer than broad. Caput somewhat drawn out before, and the lateral marginal inden- 
tations tolerably strong; the central tubercular prominence, on which the four central eyes are placed, 
has its face perpendicular (or nearly so) to the clypeus. 
Eyes, in the main as in pera, small, the laterals parallel to the lower margins of the caput. 
Falces moderate in length and strength, vertical, slightly divergent. 
Legs short, moderately strong, 4, 1, 2, 3, and armed with spines. 
Mawille short, broad, bent, and inclined to the labium. 
Labium short, subtriangular. 
Abdomen short-oval, very convex above, bigibbose at its fore extremity on the upperside. 
Sternum heart-shaped. 
Amamra bituberosa, sp. n. 
Adult female, length 37 lines. 
Cephalothorax yellow-brown, clothed rather thickly with greyish-yellow adpressed hairs. Height of clypeus 
not equal to half that of the facial space, but greater than the diameter of a fore central eye. 
Eyes small, unequal; the hind centrals are of a dull amber colour, and placed rather on the sides of the 
posterior portion of the central prominence, which is here more prominent than the anterior portion, 
the latter being scarcely more prominent than the clypeus. The fore central eyes form a square, whose 
posterior side is rather longer than either of the others; lateral eyes widely removed from the centrals, 
