No. 1.] ATTID.E OF CENTRAL AMERICA. 43 



In this species the cephalothorax widens out plainly behind 

 the dorsal eyes, especially in the male, and the thoracic part 

 falls in a wide and rather gradual slope in its first half, and 

 then more abruptly to the margin. There is a distinct post- 

 ocular depression. The anterior eyes are all separated, and 

 tjhe third row is quite as wide as the cephalothorax at that 

 place in the female, not quite so wide in the male. The falces 

 dre vertical and stout, and moderately long. The clypeus is 

 one-third as high as the middle anterior eyes. The quadrangle 

 of the eyes is equally wide in front and behind. 



The color of the cephalothorax varies from dark brown to 

 black. The cephalic part is iridescent, and seems to have been 

 covered with white scale-like hairs, although these are nearly 

 all rubbed off in our examples. There is a white spot on the 

 middle of the thoracic part, and from this two divergent white 

 lines appear, on some specimens, runriing to the dorsal ej^es. 

 There are Mdiite bands on the lower sides. The abdomen is 

 brown, Avith a deep black band around the anterior end, and 

 behind this a white band, which is widest in the middle, and 

 has its posterior edge indented. The markings are best seen 

 under alcohol. The male has on the front part of the dorsum 

 two pairs of white spots, which sometimes join to form two 

 short white lines. On the middle of the back part of the dor- 

 sum is a band of white chevrons, more or less distinctly visible. 

 The female has the same pattern a little more accentuated, the 

 band of white chevrons being edged with black, upon which 

 appear two pairs of white spots, the posterior pair obliquely 

 elongated. These markings are very variable. The speci- 

 mens shown in the drawings are not verj'- good representatives 

 of the species, so far -as the pattern on the abdomen is con- 

 cerned. 



The palpus of the female has the femur and patella light 

 brown, while the tibia and tarsus are black, and very stout, and 

 are covered with thick long black hairs, intermingled with 

 shorter white ones. In the male, the femur and petella have 

 short white hairs, and the tibia and tarsus long black ones. 



