No. 1.] ATTID.E' OF CENTRAL AMERICA. 27 



In the male the cephalothorax is dark brown, with a band 

 of white hairs low down on the sides. The cephalic plate is 

 edged with deep black, and has the central portion covered 

 with hard white scales, which are separated by little seams and 

 cracks. The abdomen is pale brown, with an enamelled covering 

 6f scales, which have the same crackled appearance as in the 

 cephalothorax. This covering splits open on the anterior part 

 of the dorsum showing a smooth and slightly depressed region 

 between the two edges. These edges are bordered by pure 

 white scales, which, on the posterior part of the abdomen, form 

 a central band, extending to the spinnerets. This band is 

 sometimes marked by a dark line down the middle. The 

 falces are black, and are long, vertical and moderately stout. 

 The clypeus is two-thirds as high as the middle eyes. The legs 

 are brown, like the cephalothorax. 



The most characteristic thing about the male, and the one 

 that marks off the species at once, is the shape of the palpus. 

 The femur bears, above, a large rosette-like mass of white hairs, 

 while below it has a strong apophysis. The patella has black 

 hairs on each side, is narrow at the proximal end and much 

 widened out and flattened at the extremity, while the tibia, 

 which is a much shorter joint, is nearly as wide as it is long at 

 the end where it joins the patella, but is much narrower 

 towards the tarsus. 



We have a second male, which is smaller than the one 

 described and which has all the colors much paler. In both 

 specimens a few white hairs on the posterior sides of the 

 abdomen indicate that there has been some pubescence which 

 has been rubbed off. 



The female is much like the male. The clypeus is not 

 so high, the falces are yellow, and are shorter and rela- 

 tively stouter. The split on the anterior part of the abdomen 

 is narrower and the white band on the posterior part is crossed 

 by a second band of white scales, which has at each end, near 

 the outer side of the abdomen, a dark spot. In the four cor- 

 ners made by the crossing bands the integument is darkened. 



