80 PECKHAM. [Vol. 3. 



scarcely narrower than the cephalothorax at that place. The 

 clypeus is one-third as high as the large middle eyes. The 

 falces are vertical and rather long and stout. 



The cephalothorax is dark, almost black, with a white 

 band on each side, another across the cephalic part just above 

 the first row of eyes and a white streak down the middle of the 

 thoracic part. There are red hairs around the eyes and on the 

 sides of the cephalic plate. The abdomen is of a grayish color, 

 being covered with a mixture of black, white and red hairs. 

 Down the middle is a slender white herring-bone stripe which 

 has the edges outlined in red. In the female there is a white 

 band around the front end, and the herring-bone stripe is found 

 only on the posterior half of the abdomen. The legs and palpi 

 are brown and not especially hairy. In the male the first 

 legs, excepting the tibial joints, are much darker than the others. 

 The second, third and fourth pairs have the femoral joints pale 

 yellow, excepting a ring at the distal end, which is dark brown, 

 making a strong contrast. In the female the femur of the first 

 is dark, with a yellow spot on the upper surface ; otherwise the 

 legs are like those of the male. There are some long white 

 hairs on the clypeus. The falces are dark brown, with white 

 hairs on the inner sides. 



We have several examples from Guatemala. 



PACHOMIUS, GEN. NOV. 



The cephalothorax is not verj' high and is plainly longer 

 than wide, sometimes nearly twice as long. The cephalic part 

 slants forward at the anterior end, but from the second row of 

 ej'es backward to the middle of the thoracic part the upper 

 surface is gently convex, the dorsal eyes being at the highest 

 point. The convexity is much more marked in the male, the 

 female being almost flat. The sides are not far from parallel, 

 there being a slight widening in the thoracic part. They are 

 vertical in front, but slant outward a little behind, the third 

 row of eyes being about as wide as the cephalothorax. The 

 quadrangle of the eyes is a little wider behind than in front or 



