chamberlin: the arachnida. 233 



and over upper part of sides dark, somewhat greyish black, a wavy 

 or zig-zag light line dividing the dark along the upper part of the 

 dark area of each side ; dorsum light, the light area divided by a me- 

 dian longitudinal stripe formed by two contiguous triangular areas of 

 which the apices are cephalad ; lower portion of sides lighter, crossed 

 by several more or less obscure light lines; median portion of venter 

 dark, a light longitudinal line on each side. Spinnerets light testa- 

 ceous or yellow. 



Posterior row of eyes a little procurved; median eyes much the 

 largest of all, elongate, long axis paralled with that of body, only 

 about one third their long diameter apart, much farther, about four 

 fifths their diameter, from the laterals ; laterals about one third their 

 diameter from the anterior laterals which are considerably smaller. 

 Anterior row of eyes straight; median eyes distinctly smaller than the 

 laterals (diameters about as 11:13), their radius apart and only their 

 diameter from the laterals. Area of median eyes longer than wide 

 (9:8), wider behind than in front not quite as 8:7, (Plate 17, fig. 1). 



Labium as usual much wider than long (ratio 11:8); semi-circularly 

 rounded distad, (Plate 17, fig. 2). 



Sternum subtriangular, narrowed caudad to a slender process ex- 

 tending between coxae of last legs, (Plate 16, fig. 8). 



Paired claws with numerous long teeth, the tips of which are in a 

 straight line, these on leg I numbering ten or eleven, (Plate 16, fig. 9). 

 Unpaired claw with a single small denticle, (Plate 16, fig. 10). 



Female. Length, 8 mm. Length of cephalothorax, 3 mm. ; width 



Loca%.— Urubamba, 9,500 feet, July. (Type, M. C. Z. 188, 

 female; para type, M. C. Z. 189, 2 females). 



Enoplognatha dubia, sp. nov. 

 Plate 17, fig. 3. 



Carapace dilute testaceous, a blackish median longitudinal stripe 

 .over stria thoracica, this becoming wider and more dilute cephalad 



