176 PROCEEDINGS OF THE ACADEMY OF [May, 



eter from eyes of second row; eyes of second row their diameter or a 

 little more apart; quadrangle of posterior eyes more than one-fourth 

 the length of the cephalothorax. 



Labium wider than long (4.25 : 4) ; basal excavation one-fourth the 

 total length; strongly attenuated anteriorly, the sides for most of 

 length convexly rounded, becoming straight toward anterior angles; 

 front margin slightly convexly rounded. 



Legs with the metatarsus of the fourth pair clearly longer than the 

 tibia -h patella; tibia H- patella of the first pair of the same length as 

 the cephalothorax; first two pairs of spines of the anterior tibiae very 

 long and overlapping as usual; lateral scopulse of anterior tarsi very 

 thin. 



Epigynum without distinctly defined lateral ridges in the median 

 region; sides strongh^ angulate in front of middle; guide usually pointed 

 just in front of posterior foveae, between the anterior portions of 

 which it is not concavely depressed as it is in flavipes, descending from 

 the higher transverse ridge in a more nearly straight line than in the 

 latter species. (PI. XIII, fig. 1.) 



Total length, 5 mm. Length of cephalothorax, 2.4 mm.; width, 

 1.8 mm. 



Length of leg I, 7.3 mm. ; tib. + pat., 2.4 mm. ; met., 1.5 mm. 



Length of leg II, 7 mm. 



Length of leg III, 7 mm. 



Length of leg IV, 10.5 mm. ; tib. + pat., 3 mm. ; met., 3.5 mm. 



Male. — Darker than female and the light and dark markings more 

 strongly contrasting; entire eye region black; supramarginal light 

 stripes of cephalothorax often obscure; femora of first legs entirely 

 black, those of second pair pale over most of ventral surface, the black 

 of dorsal surface more or less interrupted with yellow ; posterior femora 

 with dark rings which are more broken or interrupted than in female; 

 distal joints of all legs yellow, without any dark annuli. Palpi entirely 

 black except the patellae and the tips of the tarsi which are yellow or, 

 in life, bright white. 



Tibia of palpus a little longer than the patella, becoming thicker 

 distally, tarsus as long as the two preceding joints together. Scopus 

 resembling that of milvina, but reaching to or beyond the exterior side 

 of the alveolus; lower border of the inferior furrow of anterior lobe 

 developed at the exterior side into a dorsally concave, boat^shaped 

 structure which at the exterior end is keeled and bears below a short 

 rounded flap, the upper margin of the furrow with a strongly chitinized 

 triangular process or tenaculum directed caudally toward the process 

 of the inferior margin as in milvina. (PI. XIII, fig. 2.) 



