No. 2.] SPIDI'^RS OF THE MARPTUSA GEO UP. 113 



The cephalothorax is black, with a thin covering of long, 

 yellowish-white hairs. The abdomen is gray on the sides and 

 down the middle, with two broken, dark-colored longitudinal 

 bands. The first legs are dark brown with a reddish tint, and are 

 ■\\'ell covered with white hairs. The other legs and the palpi are 

 light yellowish-brown, the palpi and the clypeus being covered 

 with long, white hairs. The falces are reddish-brown. 



We have one female from Japan, the exact locality being 

 unknown. 



FUENTES GEX. NOV. 



Spiders below medium size, with the cephalothorax rather 

 narrow, with nearly parallel sides. 



The cephalothorax is rather low and is flat (with the ex- 

 ception of the post-ocular depression) throughout the cephalic 

 and nearly all of the thoracic part, sloping off rather steeply a 

 little in front of the posterior border. The sides are nearly 

 parallel, there being an almost imperceptible widening behind 

 the dorsal eyes. The sides are vertical, or nearly vertical, 

 in the cephalic part, but are slightly wider below in the 

 thoracic. The quadrangle of the eyes is from one-fourth to 

 one-third wider than long, is equally wide in front and behind 

 and occupies two-fifths of the cephalothorax. The first row of 

 eyes is straight, the middle being nearly twice as large as the 

 lateral. The position of the eyes of the second row varies. 

 They are sometimes nearer the lateral, and sometimes nearer 

 the dorsal eyes. The dorsal eyes are rather larger than usual, 

 and form a row nearly, if not quite, as wide as the cephalo- 

 thorax at that place. 



This genus, formed for a new species, pertinax, also in- 

 cludes (Icius) lineatus C. K., described in our N. A. Spiders of 

 the Family Attidte, p. 45. 



FUENTES PERTINAX SP. NOV. 



Plate XL, Figs. 4—4/. 

 $ . Length, 5.5. Length of cephalothorax, 2.2 ; width 

 of cephalothorax, 1.5. 



