ATAULFO.—XYSTICUS. 179 
the form of many vertical dashes on the sides. It is furnished pretty freely with strong, prominent, 
bristly hairs. Anal tubercle large and two-jointed. 
Hab. Mexico, Teapa in Tabasco (H. H. Smith). 
XYSTICUS, C. L. Koch. 
Xysticus facetus, sp. n. 
Adult male, length 23 lines. 
Cephalothorax as broad as long. Colour yellow-brown, thickly marked on the sides with black-brown, leaving 
a broad central longitudinal yellow-brown band ; on each side near the hinder extremity is a large black 
blotch, and another smaller one marks the thoracic indentation. At the middle of the central band is a 
large U-shaped yellow-white line, the lower extremity of which crosses the thoracic indentation, and the 
band itself is bisected longitudinally by two indistinct nearly parallel dusky lines enclosing a central line 
of short spine-like bristles ; a large part of the ocular area from a clearly defined line running from the 
hind-lateral eyes behind the fore-laterals and a little way in front of the hind-centrals is yellow-white. 
The spine-like bristles on the caput and lower margin of the clypeus are normal. The height of the 
celypeus is slightly more than one-third of the facial space. 
Eyes normal. The four centrals form a square. The hind-central pair are distinctly nearer together than to 
the hind-laterals, while the fore-centrals are distinctly further from each other than from the fore-laterals. 
Legs tolerably long, strong, spines normal, 1, 2,4, 3. Excepting the tarsi and metatarsi, they are deep rich 
blackish-red-brown. The femora, chiefly on the anterior side, are marbled with yellowish and white ; 
those of the 3rd and 4th pairs have the most spotted or marbled look, from the red-brown being broken 
up into blotches. 
Palpi short, strong, similar to the legs in colour, the humeral joint dark reddish-brown, the last mottled with 
yellow-brown, blackish, and white. Cubital and radial joints stout; the latter is shortest, and has a 
strong obtusely-pointed apophysis at its fore extremity on the outer side, rather less in length than the 
joint itself, and fitting closely to the base of the digital joint, and another apophysis more underneath bent 
upwards towards the palpal organs, and broadest at its extremity, which is obliquely truncated. Digital 
joint large, broad-oval. Palpal organs encircled with a long, strong, tapering black spine which has its 
origin in the central lobe ; towards the hinder part of these organs, and within the basal curve of the spine 
noted above, are two strong prominent spiny processes with their extremities in contact with each other ; 
one of these is much smaller than the other, and is of a curved, tapering, spine-like appearance. These 
two processes are found in various forms and sizes in almost all the known males of this genus, and are 
very characteristic of the different species. In front of the base of the central spine are two other strong 
corneous processes directed outwards to the edge of the digital joint; this joint has also a strong obtusely- 
ending lobe or prominence on the outer margin, close in contact with the end of the radial apophysis. 
Falces normal, powerful, yellow-brown, marked and mottled with dark brown and whitish, the latter mostly 
towards their extremities. 
Mazille and labium yellow-brown, irregularly marked with black-brown. 
Sternum yellow-white, with a yellow-brown border, blotched and marked irregularly with deep black-brown, 
and with a clear brownish-yellow marginal border. 
Abdomen rather large, as broad as long, truncate before, round behind. The upperside is dark yellow-brown, 
marked thickly with deep black-brown ; the sides forward are broadly white, and a large white patch 
marked with yellow-brown occupies the middle of the anterior margin; on each side near the middle is a 
short, slightly oblique, irregularly shaped, transverse white bar (or a long one interrupted in the middle) ; 
following this, towards the spinners, are two other transverse, slightly curved bars of the same hue, running 
almost entirely across the upperside, followed by two or three other short and less well-defined whitish bars’ 
closer together than the longer ones. The sides and hinder extremity are rugulose, white, more or less 
marked with deep brown. The intensity and clearness of these markings of the abdomen vary much in 
different examples. The underside is mottled and marked with yellow-brown, blackish, and white. The 
upperside is thickly covered with short, strong, spiniform, prominent, black bristles. 
Hab. Mexico, Cuernavaca in Morelos (H. H. Smith). 
Zap 2 
