72 PECKHAM. [Vol. 3. 



This species diflfers from radians in having the cephahc 

 part wider than the thoracic, the cephalothorax being a little 

 wider at the dorsal eyes than in front, and in having the third 

 row of eyes fully as wide as the cephalothorax at that place, 

 and the first row curved downward. 



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



HAMILLUS RADIANS, SP. NOV. 



Plate VI, figs. 4-4a. 



5 . Length, 6.2. Length of cephalothorax, 2.2 ; width of 

 cephalothorax, 1.5. 

 Legs, 4132 ; first pair a little the stoutest. 



The sides of the cephalothorax are not far from parallel, 

 but there is a slight widening from the first row of ej^es to a 

 point near the posterior end, where they begin to contract. 

 They are vertical in front, but .slant outward a little in the 

 thoracic part. The clypeus is very narrow. The falces are 

 vertical, rounded, short and stout. 



The cephalothorax is bright brown. The cephalic part 

 and a crescent-shaped plate behind the dorsal eyes are yellow, 

 covered with iridescent scales. This iridescent region is 

 bounded by a line of white hairs, which curves around outside 

 the dorsal eyes and forms a scalloped line behind them. 



The drab colored integument of the abdomen seems to 

 have been covered with iridescent scales. Across the anterior 

 end and around the sides is a white band which is irregularly 

 scalloped on the inner sides. From this, behind the middle, 

 two pairs of white bands extend upward, over the back. At 

 the spinnerets are two white spots, joined in front by a white 

 chevron. 



The first legs are bright brown, the femoral joints being the 

 darkest. The other legs and the palpi are light 3'ellow. The 

 clypeus is edged with white hairs. 



We have a single female, sent to us by Count Keyserling, 

 from Panama. 



