KEYSERLINGIA.—CYRTARACHNE. 59 
anterior side is the shortest. The hind-centrals are the largest of the eight. The fore laterals with the 
hind centrals form a straight transverse line over the caput. 
The falces are short, moderately strong, roundly prominent in front, inclined a little towards the sternum, and 
similar in colour to the cephalothorax, as are also the maxille and labium. 
The sternum is rather darker than those parts, and is transversely rugulose. 
The leys are of a dull greenish-yellow-brown colour; the femora of the first two pairs are the darkest, and 
somewhat tuberculose on the surface; they are furnished with hairs only. 
The palp? are short, similar to the legs in colour. The palpal bulb is rather large. The radial joint is dilated 
in front, obtusely prominent on the outer side, and has a short, sharp, spine-like prominence at the fore 
extremity on the inner side, and from immediately underneath its anterior extremity on the upperside, 
and close to the base of the digital joint, issues a long, strong, curved, tapering, but obtusely pointed 
horn-like spine, directed backwards, while its point is directed forwards (I found it very difficult to see the 
exact origin of this horn-like spine, whether it is connected with the radial or digital joint or with the 
palpal organs, but I think it issues from the inside of the radial joint). The digital joints are of irregular 
form. The palpal organs are large, prominent, and not very complex, consisting chiefly of a large corneous 
lobe, which is drawn out into two or more coincident processes at its extremity, directed outwards, and 
has a small, curved, prominent, slightly tapering spine, pointing outwards beneath its basal portion. 
The abdomen is of a triangular form, widening gradually from its fore extremity, but its hinder part is pro- 
duced into a short, blunt, caudal prominence, giving the whole a somewhat diamond shape. It is of a 
dull leaden-brown hue, the upperside thickly marked with white and yellowish, and with a brown sub- 
triangular pattern, corresponding nearly to the form of the abdomen, this portion being very glossy. The 
sides are somewhat longitudinally rugulose. The anterior portion of the underside is covered with a 
coriaceous, oblong, granulose, slightly reddish-brown cuticle, forming at its extremity a circular collar, 
into which the pedicle connecting the abdomen and cephalothorax is inserted. The spinners are very 
short, inserted at the extremity of a kind of coriaceous, prominent, deep-brown sheath of a truncated 
cone-shape. 
Hab. Panama, Bugaba (Champion). 
A single example. 
CYRTARACHNE, Thorell. 
Cyrtarachne decem-tuberculata, sp. n. 
Adult male, length 2 lines. 
Cephalothorax of a deep black-bistre-brown, covered with minute tubercles or granulosities, from which spring 
short spine-like black bristles, mixed with greyish hairs; the hinder part of the thorax has a yellowish 
longitudinal band, with a deep brown stripe along the middle. 
Eyes large. Those of the central group are much the largest, and describe a square whose anterior side is rather 
the longest ; the posterior pair are separated by an eye’s diameter ; those of the anterior pair (which are the 
largest) also appear to be divided by a similar interval. The height of the clypeus equals the diameter 
of one of the fore central eyes. The lateral eyes are on the extreme outer sides of the caput, con- 
tiguous, and seated on a strong tubercle. 
The falces are rather long, not very strong, straight, deep brown, paler at the base and extremities. 
Legs rather short, tolerably strong, devoid of spines, 1, 2, 4, 3, similar in colour to the cephalothorax, annu- 
lated rather distinctly with yellow and dull orange. ‘Lhe tibie are rather bent, and enlarged at their 
anterior extremities, and all the femora are covered with strongish tubercular prominences of various 
sizes. 
Palpi very short, similar to the legs in colour; palpal bulb large, nearly globular, Palpal organs large, pro- 
minent, and tolerably complex, with corneous lobes and processes. 
Mawille and labium deep black-brown tipped with greyish. 
Sternum deep bistre-brown, with a dull orange-brown oval marking towards the fore part, and some similarly 
coloured marginal spots. 
If 2 
