chamberlin: the arachnida. 247 



but not meeting at middle, the median dorsal line being occupied by a 

 fine dark line which presents short lateral branches; in the male 

 there are caudad on each side two large proximate white spots and 

 farther forward two short white marks. General background of 

 venter of abdomen pale; just back of epigynum a median white spot 

 on each side of which is a black spot of about equal size and farther 

 laterad a longitudinal fine black line which reaches to a dusky area 

 about the spinnerets. 



Posterior row of eyes strongly recurved; median eyes a little more 

 than their diameter apart, nearly three times their diameter from the 

 laterals. Lateral eyes on each side their radius apart, scarcely differ- 

 ing in size. Anterior row of eyes recurved ; median eyes a little smaller 

 than the posterior medians (diameters as 7:8), twice their diameter 

 apart, and between two and a half and three times their diameter from 

 the laterals. Area of median eyes wider in front than behind in ratio 

 25:22; wider in front than long (25:22). 



Sternum longer than wide in about ratio 5:4. Caudally triangular, 

 the tip narrowly truncate. 



Lower margin of furrow of chelicera with three stout conical teeth; 

 upper margin also with three. 



Legs well spined, the spines moderate, appressed, blackish. 



Female. Length, 7.3 mm. Length of cephalothorax, 3.5 mm.; 

 width, 2.9 mm. 



Locality.— San Miguel, 6,000 feet, July. (Type, M. C. Z. 216, 

 female; paratype, M. C. Z. 217, immature male). 



Aranea sp. a. 



An immature female from Huadquina, 5,000 feet, July. (M. C. Z. 



218). 



Aranea sp. b. 



An immature female of a second species also from Huadquina. 

 (M. C. Z. 219). 



