Pecl'ham — Spiders of the Family Attidae. 335 



some of the species (especially conspecta) broaden out a little 

 behind the dorsal eyes. The sides are not far from vertical, 

 widening a little from above below; in the cephalic part they 

 are sometimes slightly concave. The cephalic part is plainly in- 

 clined forward. The thoracic always falls, although sometimes 

 only slightly, from the dorsal eyes, and in this respect Escambia 

 differs from Dynamius, in which genns the thoracic part does 

 not fall backward for some distance, although it may round off 

 on the sides. The quadrangle of the eyes is equally wide in 

 front and behind or a little wider in front ; it is about one-fourth 

 wider than long, and occupies two-fifths, or a little more, of the 

 cephalothorax. The anterior eyes are rather large and are 

 usually a little separated. They form a straight or very slightly 

 curved row (in Dynamius the first row is more distinctly 

 curved), of which the middle eyes are nearly twice as large as 

 the lateral. The second row is halfway between the first and 

 the tliird. The third row is as wide or nearly as wide as the 

 cephalothorax at that place. 



This genus presents some difiiculties, as there is a good deal 

 of variation, not onlv aniona' the different species, but between 

 the two sexes. The males fall more steeply than the females 

 behind the dorsal eves, and have the sides more rounded out. 



We have three old species, conspecta, alacris, and parvula 

 (described in Attidae of Central America, l^at. Hist. Soc. of 

 Wisconsin, 1896), and two new ones which are described below. 



Escamhia valida, sp. nov. 

 PI. XXYI, fig. 6 ; PL XXV, figs. 13-13c. 



Length, o 7 mm; ? 8 mm. Legs, $ and ? 3421. 



This handsome species is the only one that we have from 

 Brazil. 



In the male all the legs have a fringe of black hairs on the 

 patella and tibia. This fringe is heaviest on the third pair, 

 where it runs down on to the metatarsus, and is very light and 

 inconspicuous on the fourth. The metallic lustre is most bril- 

 liant on the tibia of the first and second pairs. The tarsi are 

 all pale yellow, contrasting with the dark color of the other 

 joints. 



