18 PECKHAM. [Vol. 3. 



but the figures given certainly bear a strong resemblance to 

 Amycus. At any rate, whatever else thej^ may be, they cannot 

 be Mstvia. 



AMYCUS BENIGNUS, PECKHAM. 



Plate I, figs. 2-2e. 



S . Length, 5.2. Length of cephalothorax, 2.3 ; width of 



cephalothorax, 1.9. 

 9 . Length, 6. Length of cephalothorax, 3.3 ; width of 



cephalothorax, 2. 

 Legs, ^ 1342; 9 3412. 



• The quadrangle of the eyes is wider in front than behind, 

 is one-fourth wider than long, and occupies more than half of 

 the cephalothorax. The anterior eyes are a little separated 

 from each other and form a straight row, the middle being just 

 twice as large as the lateral. The second row is nearer the first 

 than the third. In the male the clypeus is plainly wider than 

 the large middle eyes, and is divided into two sections by a line 

 which marks off the lower third from the upper part. The 

 falces are short, broad, vertical and parallel. In the female the 

 clypeus is not quite so high as the large eyes and the falces are 

 a little inclined backward. 



There is a good deal of variety in the coloring of the 

 males. The cephalothorax is dark brown on the sides and 

 behind. There is a central white spot on the thoracic part. 

 Some specimens have the cephalic plate covered with brilliant 

 red hairs, excepting a white central line, while all the eyes are 

 surrounded by circles of short brilliant red hairs, and a ridge 

 of long upright red hairs stands up above the first row of eyes. 

 In others the color of the hairs is dull brownish red, while in 

 one example there is no red at all, all of the hairs, the ridge as 

 well as the shorter ones, being pure white. The abdomen is 

 yellow or pale brown in the middle region with a scalloped 

 dark band on each side. In the clear central space there are 

 two pairs of dark dots on the posterior part and one pair in 



