chamberlin: the arachnida. 



269 



and laterally yellow; the dorsum covered with a close network of 

 mostly confluent dusky brown spots among which a median longitudi- 

 nal pale line limited by uneven dark lines may be traced. 



Posterior row of eyes only slightly procurved, nearly straight; 

 medians a little more than their diameter (cir. once and a seventh) 

 apart, a little less than their diameter (six sevenths) from the laterals. 

 Anterior row of eyes much shorter than the posterior (41 : 31) ; straight 

 or scarcely recurved; medians smaller than the laterals (ratio of 

 diameters 5:7), slightly more than their radius apart (three fifths 

 diameter) and almost contiguous with the laterals. Clypeus narrower 

 than diameter of eyes. Area of median eyes equal in length and 

 breadth; three fourths as wide in front as behind. 



Sternum longer than wide nearly in ratio 15:11. 



Labium much longer than wide; crenately notched or incised 

 mesally at distal end. 



Lower margin of furrow of chelicera with four or five teeth of which 

 the two more distal are longer than the others. 



Tibia I with three pairs of ventral spines of which the distal are 

 short and those of the other two pairs long; also bearing on the 

 anterior side three spines and one dorsally. Metatarsus I below with 

 a basal pair of long appressed spines; on anterior side with two spines 

 of which the basal is smaller than the median, and three pairs of 

 dorsal or subdorsal spines. Femur I with three spines along mid- 

 dorsal line. Anterior tarsi scopulate; metatarsi sparsely scopulate 

 distad ; posterior tarsi scarcely truly scopulate or with but few scopu- 

 lar hairs. 



Distal article of superior spinnerets abruptly narrower than the 

 proximal, cylindroconical, small. 



Rima ventralis nearly equidistant between bases of spinnerets and 

 the genital furrow. 



Female. Length, 6.8 mm. Length of cephalothorax, 2.7 mm.; 

 width, 2 mm. 



ioca%.— Tincochaca, 7,000 feet, August. (Type, M. C. Z. 258, 

 one female). 



