chamberlin: the arachnida. 205 



fern. tib. + pat. met. tar. total 



Leg I 12 mm. 15 mm. 9.5 mm. 8 mm. 44.5 mm. 



Leg II missing 



Leg III 10 12.5 10 7.5 40.0 



Leg IV missing 



Length of spinnerets 12.2 mm. 



Locality. — Huadquina, 5,000 feet, wet season. (Type M. C. Z. 

 147, one female). 

 Named for Minor C. Keith of New York. 



Brachythele incursus, sp. nov. 

 Plate 7, fig. 12. 



Integument of cephalothorax and legs brown, that of carapace 

 and femora of legs above deeper in color; chelicerae above blackish 

 brown. Integument of abdomen above dusky brown; below light 

 brown. Spinnerets blackish. Hair of carapace and abdomen gold- 

 en brown. Hair of sternum blackish. Fringe of chelicerae rufous. 



Eye-area less than twice as wide as long (57:30). Anterior row of 

 eyes of same length as posterior. Anterior row straight. Anterior 

 median eyes slightly more than their radius apart (6:5.5), nearer to 

 the laterals; diameter but little more than half that of lateral eye 

 (11:20). Posterior lateral eyes clearly smaller than the anterior 

 laterals (ratio of diameters 3:4), lateral eyes nearly contiguous as 

 usual. Posterior median eyes elliptic, about three fourths as wide 

 as long, four fifths as long as the laterals. A line tangent to caudal 

 edges of two posterior eyes of each side passes clearly caudad of 

 anterior median eye of opposite side, (Plate 7, fig. 12). 



Labium wider than long in the ratio 9.5:6.8; distal margin a 

 little incurved. A row of low stout, rounded spinules across apical 

 portion. 



Endites at proximal corner with the patch of spinules as usual. 



Thoracic fovea a little recurved. 



Sternum longer than wide. Hairs not dense, black, longer about 

 margins. 



Paired claws of legs each with two rows of from six to eight teeth. 

 Single claw smooth. In the stage of growth represented by the 

 type the anterior tarsi are not densely scopulate and the metatarsi 

 are scopulate only distally; the posterior tarsi are scopulate only 



