54 Wisconsin Academy of Sciences, Arts and Letters. 



dorsal eye; near the termination of this line, at the point at which 

 the thoracic part begins to slant downward, there arises a slightly 

 oblique white line which i^asses downward to the border. The lower 

 margin is dark brown. Clypeus brown. The lower anterior face of 

 the abdomen is black; above this is a curved white band which ends, 

 on each side, in an obhque bar. The anterior dorsum is umber 

 brown; in front of the middle are two black spots, separated by a 

 line of brown; a little behind these is one large black spot w^hich is 

 surrounded by white. There is a second pair of oblique white bars, 

 on the sides, at this point of the abdomen. The posterior end of the 

 abdomen is white, with one or. two transverse bands of light brown. 

 The entire dorsum is sparsely covered with long yellowish hairs. 

 Falces black. Mouthparts, palpi, and cox^e of the first and second, 

 brown; coxee of the third and fourth, pale, each w^ith a black spot. 

 Sternum black. Legs of the first and second, dark brown; of the 

 third, femur dark brown, other joints lighter; of the fourth, fight- 

 brown or pale: patella and tibia of the third and fourth, with black 

 fines on botli anterior and posterior faces. Venter black. 

 Habitat: Mexico. 



ERIS OCTAYUS Hentz. 



Plate I, figure 87, Plate III, figure 37. 



Syn.: 1845. Attus octavus H., Journal Bost. Soc. Nat. Hist., Vol. V. 



1875. Attus octavus id.. Coll. Arachn. Writ, by N. M. Hentz. Ed. 

 by Burgess, Boston, p. 70. 



9 . Total length 4.3 mm. 



Cephalothorax: length 1.8; width 1.5; height 1. 



Legs 4.2, 3, 3, 3.9; pateUa and tibia of the first, 1.5; patella and tibia of 

 the third, 1.2; patella and tibia of the fourth, 1.4; metatarsus and 

 tai'sus of the fourth, 1.1. 



Cephalothorax a little -wider at the dorsal eyes, with sides nearly vertical 

 in front, I'ounded in the thoracic part, and truncated behind. Ocu- 

 lar area one-fourth wider than long, wider behind than in front; 

 anterior row of eyes straight; lateral more than one-half middle 

 eyes, separated from them by one-half their own diameter; eyes of 

 second row half way between lateral and dorsal eyes; dorsal eyes 

 further from each other than from lateral borders. Clypeus one-fifth 

 as high as middle eyes. Falces extending in width to inner edges of 

 lateral eyes, as long as face, parallel, vertical. MaxiUse rather long, 

 a little enlarged and rounded at tip, parallel; labium one-ha]f as long- 

 as maxilla?, as wide as long, contracted and rounded at tip. Ster- 

 num one-half longer than wide, narrow at both ends, truncated in 



