50 Wisconsin Academy of Sciences, Arts and Letters. 



first, one short inferior s^^ine; metatarsus of the first, two stout in- 

 ferior spines; metatarsus of the second, two inferior not very stout 

 spines; metatarsi of tlie third and fourth with only terminal circles. 



Coloration: Cephalothorax with the entire uijper surface covered with 

 short white hairs, black on the sides, and white on the lower border; 

 anterior middle eyes surrounded by reddish rings. Clypeus covered 

 with short white and reddish hairs. Abdomen black with a wide 

 central longittidinal white band, and the lower sides white. Falces 

 black, with sonae short white hairs. Mouthparts black. Coxge 

 brown. Sternum black with white hairs. Venter covered with 

 white hairs. Palpi brown with white hairs. Legs of the first pair 

 black, and of the second, third and fourth, brown, all with white hairs 

 which form heavy fringes on the undersides of the first legs. 



Habitat: Texas. 



ICIUS ALBOVITTATUS Keyserling. 



Plate 1, figure 35a. Plate 4, figure 35d. 



Syn.: 1885. Wala albovittata Keys., Neue Spuanen aus Amerika. VI, 

 Verhandl. zool. bot. gesel. in Wien, p. 31 (517). 



$ . Total length 5.2 mm. Width of abdomen 1.3 mm. 



Cephalothorax: length 1.9; width 1.7. 



Legs 6.4, 3.7, 3.5, 4.1; patella and tibia of the first, 2.7; patella and tibia of 

 the third, 1.3; patella and tibia of the fourth 1.6; metatarsus and 

 tarsus of the fourth, 1.3. 



Cephalothorax low and flat, plainly wider in the middle, with rounded 

 sides; cephalic jjart inclined forward. Quadrangle of eyes occupy- 

 ing almost one-half of the cephalothorax, a little more than one-third 

 wider than long, wider behind than in front. First row of eyes a 

 little bent. Middle eyes nearly touching; lateral one-half as large 

 and separated from them by one-third their own diameter. Second 

 row of eyes plainly nearer the first than the third row. Dorsal eyes 

 as large as the lateral, further from each other than from the lateral 

 borders, forming a row not quite so wide as cephalothorax at that 

 place. Clypeus extremely low. Falces nearly as wide as first row 

 of eyes, compressed from before behind, wider in middle than at 

 base or extremity, a little inclined forward, diverging at the extrem- 

 ities; fang two-thirds as long as falx. Maxillae slightly diverging, 

 rather long, enlarged and truncated at extremity. Labium two- 

 thirds as long as maxillae, longer than wide, a little widest in middle, 

 truncated. Sternum rounded, nearly as wade as long, projecting a 

 very little between anterior coxee. Anterior cox^ separated by less 

 than width of labium. First legs much the longest and stoutest. 

 Femoral and metatarsal sijines on the four j)airs, only in terminal 

 circles on the third and fourth; tibial spines on the first and second. 



