TflORELL ON ARANE^E OF COLORADO. 503 



again as great as the diameter of an eye; the space between the 

 hind centrals is nearly half again as great as chat between them and 

 the hind laterals. The distance between the fore lateral and hind cen- 

 tral eyes is double as great as that between the former and the fore cen- 

 trals, and the distance between the fore and hind centra 1 eyes is much 

 larger than that between the fore and hind laterals. The mandibles are 

 perpendicular, covered with long hairs and several long, fine bristles; 

 their length is not half again as great as the height of the clypeus. The 

 jpalpi and legs are coarse, appressed hair, and armed with numerous 

 long and rather fine spines ; on the under part of the fore tibiai, the 

 spines are 2. 2, 2. Tlie third and fourth pairs of legs are very nearly of 

 the same length. The abdomen is much longer than broad, egg-shaped, 

 covered above with coarse, appressed hair, especially on its paler parts; 

 the vulva consists of a small, almost semici rcular depression, rounded in 

 front and truncated behind, where it shows two longitudinal, low, short, 

 and coarse, parallel costoe. 



Color. — The whole body above and the extremities are covered more 

 or less thic kly M'ith coarse, appressed, whitish hair. The cephalothorax 

 is dark brown, with a pale, brownish-gray, longitudinal, middle band be- 

 hind, which only reaches to the pars cephalica, and is geminated by a 

 blackish line behind ; this band is only half as broad as the brown space 

 on each side of it. Sternum, maxillce, and labium, as also the coxpe be- 

 neath, pale grayish-brown ; mandibles blackish -brown. Falpi and legs 

 blackish-brown, with pale grayish-brown irregular rings, and paler 

 toward the apex; the thighs have a rather broad pale ring at the base 

 and another narrow ring near the middle, as also a pale patch at the 

 apex ; the patellce have one such ring toward the base, the tibine one in 

 the middle, and they are also more or less distinctly pale at the very 

 apex; the metatarsi and tarsi are pale brownish, the former with three 

 narrow black rings. The spines are mostly black, partly pale. The 

 back of the abdomen is, on its anterior half, of a pale, slightly brownish- 

 gray color, this gray area being behind, on each side, limited by an 

 oblique row of whitish spots continued down the sides of the abdomen ; 

 along the middle, this area shows a lanceolate band, reaching from the 

 base to the middle of the back, and having on either side an oblique, 

 short and narrow branch; the pale gray color on either side of the lan- 

 ceolate band is continued backward in the form of a rather narrow 

 middle band, gradually tapering toward the anus, and divided into spots 

 by about four short, transversal, black lines; on the sides of this band 

 the back is dark grayish-brown, and outward marked with a couple of 

 large black spots, as also with a few smaller whitish ones. The appressed 

 hair with which the back is covered is of a grayish-white color. The 

 sides of the abdomen are blackish, sprinkled with small paler spots, and 

 provided with a longitudinal, broad, irregular, whitish-gray band behind, 

 upward ; the belly is gray, with three longitudinal dusky bauds con- 

 verging backward. The vulva is pale brown, its costa^ black. 



