204 bulletin: museum of comparative zoology. 



Brachythele keithi, sp. nov. 

 Plate 7, fig. 11. 



Integument of cephalothorax and legs light chestnut-brown; that 

 of the chelicerae dark chestnut; integument of abdomen and spin- 

 nerets clear brown. Pubescence of carapace brown of golden lustre ; 

 that of abdomen dense, of similar golden brown color or of more 

 coppery lustre. 



Eye-tubercle strongly convexly elevated between the posterior 

 median eyes. Eye-area twice as wide as long (45:22); anterior row 

 a little shorter than the posterior (45:42). x\nterior row a little 

 procurved. Anterior median eyes a little more than their radius 

 apart, closer to the lateral eyes; diameter but little more than two 

 thirds the longer diameter of the lateral eyes (ratio near 23:31). 

 Posterior lateral eyes slightly longer than the anterior (33: 31). Pos- 

 terior median eyes elongate, narrowed caudad, length to width 

 about as 3: 5 — smaller than lateral eyes (lengths as 25: 33), nearer to 

 these than to anterior medians. A line tangent to caudal edges of 

 posterior eyes on each side in type passing through anterior third of 

 opposite anterior median eye, (Plate 7, fig. 11). 



Labium clearly wider than long; distal margin mesally incurved. 

 Spinules none. 



Spinules on proximal corner of endites short and stout, constricted 

 near or a little above base, distally expanded and rounded. 



Thoracic fovea recurved. 



Sternum longer than w4de; gently convex. The sigillae at \e\e\ 

 between second and third legs most distinct, marginal. Sternum 

 with numerous fine tubercles from each of which arises a hair. 



Paired claws with teeth in two rows; teeth of each row mostly 

 seven or eight in number. Unpaired claw smooth. Tarsal scopulae 

 dense, extending to base; none divided by a setose line or band. 

 Spines long and moderately stout, black. 



Posterior spinnerets more than two thirds as long as the abdomen 

 ventrally ; the three joints subequal in length, decreasing in diameter 

 distad, the second being more slender than the first and the third 

 than the second. Anterior spinnerets twice or more their diameter 

 apart at base. 



Female. Length, 30 mm. Length of cephalothorax, 14 mm.; 

 width, 12 mm. 



