MIMETUS. 297 
Sternum heart-shaped, truncate before, rather sharp-pointed behind ; colour pale yellow, with a few yellow- 
brown spots or blotches round the margins. 
Abdomen subtriangular, furnished with strong bristly hairs and with a strong tubercular conical prominence 
on each side towards the fore extremity. Colour pale yellowish-brown, mottled with white on the sides 
and upperside, and with a yellow-brownish, rather indefinite and broken, central, longitudinal, tapering 
band on the upperside. Underside pale yellowish, with some white agglomerated spots on each side of 
the median line between the spinners and the spiracular plates. 
The female resembles the male in general characters, but has the darker markings sometimes more strongly 
marked and defined. The genital aperture is of characteristic form. 
This species is nearly allied to M. triangularis, Keys. (of which the female only has been described), but 
differs in the form of the genital aperture, as well as in other respects. 
Hab. Panama, Bugaba (Champion). 
Mimetus trituberculatus, sp. n. 
Adult male, length 13 lines. 
Cephalothorax pale yellow, very slightly suffused along the sides and on the ocular area with rusty-reddish. 
Eyes of posterior row equally separated from each other (by about an eye’s diameter). The fore side of the 
central quadrangle is a little longer than the hinder one, which last is equal to the sides in length. 
Legs long, slender, 1, 2,4,3, pale yellow, furnished with the normal spines, and with a brownish annulus 
at the fore extremity of the femora; the genue and fore extremity of the tibie are rather rusty- 
reddish. 
Palpi similar to the legs in colour and armature. 
Falces long, straight, yellow, slightly suffused with rusty-reddish at their fore part. 
Macille and labium normal and of a yellow-brown hue. 
Sternum yellow. 
Abdomen subtriangular, with a strong subconical prominence on each side near the hinder extremity, and a 
small erect (blackish) tubercular eminence on the median line of the upperside, almost in a straight line 
with the other two prominences. Colour white, with a dull brownish irregular spot in the median 
line halfway between the erect eminence and the fore extremity, and some small dusky and blackish 
markings on each side of the hinder part (which is produced into a slightly subangular form) behind 
the lateral prominences. Underside dull whity-brown, spotted with white, and a few blackish marks 
near the spinners. Genital aperture of a strongly characteristic form. 
This species may at once be distinguished by the position of the lateral subconical prominences on the 
abdomen. 
Hab. Panama, Los Remedios in Chiriqui (Champion). 
Mimetus crudelis, sp. n. 
Adult male, length 13 lines. 
Of normal general form and appearance. 
Cephalothorax yellow-brown, with an indistinct, central, longitudinal, broad tapering band of a deeper hue. 
Eyes in the normal position. Those of the hind-central pair less than half a diameter from each other, and 
at least three times as far from the hind-laterals; the exact size and position of the fore-centrals is 
uncertain, owing to the separation of the cuticle at that part from the eyes themselves. 
Legs very long, 1, 2, 4,3. Spines normal; pale yellow-brown, slightly tinged with a deeper hue at the fore 
extremity of the femora and on the genuz. 
Falces, mawille, labium, and sternum pale yellow-brown. 
Palpi’ moderately long, similar in colour to the legs; cubital joint very short, furnished with two curved 
tapering spiny bristles of great length; radial joint distinctly less than double the length of the cubital, 
clavate, very tumid above and furnished with long, strong, curved, tapering bristles of varied length ; 
digital joint large, of irregular form, furnished with long bristles. Palpal organs prominent, highly 
developed, consisting of various corneous processes and spines. 
BIOL. CENTR.-AMER., Arachn. Aran., April 1899. 2 at 
