chamberlin: the arachnida. 255 



tance or but little farther from the laterals. Area of median eyes 

 equal in length and breadth, wider in front than behind in ratio 

 10:9. 



Sternum of usual general shape; posterior portion triangular, 

 acutely pointed caudad. 



Legs abundantly armed with the usual long slender spines. 



Length of female 4.7 mm. 



Locality.— Santa Ana, 3,000 feet, August. (Type, M. C. Z. 235, 

 one female). 



Aranea sexta, sp. nov. 

 ' Plate 19, fig. 7. 



Carapace broad behind with the head narrow; thoracic furrow 

 transverse. . '"'. ' 



Abdomen angulate above on each side near middle, (Plate 19, 

 fig. 7). 



Carapace pale testaceous, the head-itgion darker and with a fine 

 light median longitudinal line extending caudad from between eyes. 

 Sternum light testaceous. Legs testaceous, not at all annulate with 

 dark. Abdomen in front of level of angles pale testaceous or even 

 of whitish cast cephalad; a white transverse band at level of angles, 

 the abdomen behind this a darker brown; venter pale, somewhat 

 whitish mesally, brown laterally and caudally. 



Posterior row of eyes recurved as usual ; median eyes circular, their 

 diameter apart or slightly less, nearly three times their diameter from 

 the laterals. Lateral eyes on each side nearly contiguous, the anterior 

 a little the larger. Anterior row of eyes clearly recurved; median 

 eyes equal in diameter to the posterior medians, once and a half their 

 diameter apart and no farther from the laterals. Area of median 

 eyes much wider in front than behind (16:13) and a little wider in 

 front than long (about 8:7). 



Sternum with process between posterior coxae long, distally rounded. 



Labium and endites of the usual form. 



Femora and patellae of legs unspined; the tibiae, metatarsi, and 

 tarsi with fewer long spines and numerous slender short, seriate or 

 subseriate ones chiefly on the anterior surface. 



Length of female 4.4 mm. 



Locality. — Panama, June. (Type, M. C. Z. 236, female). 



