No. 2.] SPIDERS OF THE MAHPTVSA ah'Ori'. V\l 



Legs, 1428 ; first pair much the longest and nuicl) the 

 stoutest. 



9 . Length, 6.5. Length of cephalothorax, 2.3 ; width 

 of cephalothorax, 1.8. 



l^egs, 1423 ; fir.st pair longest and plainly stoutest. 



The abdomen is rather wide and heavy for the size of the 

 spider. The maxillae are broad and obtusely rounded. The 

 labium is about as wide as long. The falces are short, vertical 

 and parallel; the sternum is oval. The femur, patella and 

 tibia of the first leg are much thickened in both sexes — the 

 femur especially being short and heavy. In the male the 

 femur of the second leg is also somewhat thickened. The male 

 has projecting forward from the upper part of the falces a pair 

 of horns, which first curve inward and then outward, and near 

 the distal end are sharpl}' bent, so that the tips cross each other. 



In the female the entire cephalothorax is covered with 

 white hairs ; there is a pair of black spots on the cephalic part, 

 which are only visible when the hairs are rubbed off. The 

 face is covered with long, white hairs. The abdomen is also 

 white and has two longitudinal rows of dark brown spots 

 throughout the length of the dorsum. Close to the spinnerets 

 these spots join each other, forming two or three chevrons. In 

 the male the cephalothorax has a wide white band on each 

 side and one down the middle, the rest of the surface being 

 covered with reddish-yellow hairs which grow thickly around 

 the anterior eyes. The narrow clypeus is covered with short, 

 stiff, white hairs. The abdomen, in our single male, has the 

 hairs nearly all rubbed off. It seems to have been much like 

 that of the female, except -that the general color of the integu- 

 ment is darker and that the dark spots seem to have been sep- 

 arated by yellow, instead of by white, hairs. The falces and 

 horns are dark brown. The first and second legs in the male 

 are dark brown above and black beneath, with a good many 

 short, white hairs. The third and fourth, like all the legs in 

 the female, are yellowish, with black spines. The palpus in the 

 male is black with some white hairs. In the female it is paler 

 than the legs. 



