90 PECKHAM. [Vol. 3. 



been covered with white hairs. On the abdomen there is a 

 band of white hairs around the anterior end, which extends 

 on to the sides. The falces are smooth and dark brown. The 

 palpi are dark with a few light short hairs. The legs of the 

 first pair have the femur and metatarsus and the distal part of 

 the tibia dark brown ; the other parts and all the joints of the 

 other legs are yellow, with a few very short fine black spines. 

 We have a single male from the eastern part of Guatemala. 



ZYGOBALLUS MIXUTUS, SP. NOV. 



Plate VII, tigs. 3-3c. 



S . Length, 3.5. Length of cephalothorax, 1.8 ; width of 



cephalothorax, 1.6. 

 ? . Length, 4. Length of cephalothorax, 1.8 ; width of 



cephalothorax, 1.5. 

 Legs, S 1423 ; 9 4123 ; first pair stoutest in both 



sexes. 



The falces of the male are vertical, and the abdomen has 

 two curved transverse pale bands across the dorsum. The 

 female is dark-colored, with a pattern of pale lines on the 

 abdomen. 



The cephalothorax is high ; it is slightlj^ convex in the 

 cephalic part, and falls steepl}^ from the dorsal eyes. The 

 sides are nearly vertical, and are plainly widest at the third 

 row of eyes. The quadrangle of the eyes is wider behind than 

 in front, and occupies more than half of the cephalothorax. The 

 anterior eyes form a curved row. The middle eyes are close 

 together and are a little less than twice as large as the lateral, 

 which are separated from them. The second row is plainly 

 nearer the first than the third row. The third row is as wide 

 as the cephalothorax at that place. The falces of the female 

 are short and vertical. Those of the male are also vertical, but 

 have a ridge at the outer side from which they slant toward 

 each other. They have a strong tooth on the front face at the 

 inner side, near the insertion of the fang. The fang is long. 



