70 PECKHAM. [Vol. 2, 



front and plainly behind. The thoracic part is either on a 

 level with the cephalic or falls slightly for a little distance be- 

 hind the dorsal eyes, and then slopes abruptly. Quadrangle 

 of eyes one-fifth to one-fourth wider than long, equally wide in 

 front and behind, or a little wider behind, occupying one-half 

 or more than one-half of the cephalothorax. Anterior eyes in a 

 straight or slightly curved row, all touching; the middle twice 

 as large as the lateral. Second row half-way between first and 

 third rows, or a little nearer first row. Third row as wide as 

 the cephalothorax at that place. Lija equally wide and long, 

 or longer than wide. 



KEYSERLINGELLA PERDITA N. SP. 



PI. v., Fig. 7, female ; 7a, face and falces ; 7b, side of 

 cephalothorax ; 7c, epigynum ; 7e and 7d, male palpus. 

 .?. Total length, 3.2 mm. 



Cephalothorax : Length, 1.6 mm.; width, .9 mm. 



Legs, 4132 ; first pair stoutest. 



1st leg longer than 2d by tarsus and one-third of 



metatarsus. 

 4th leg longer than 3d by tarsus and one-half meta- 

 tarsus. 

 5 . Total length, 3.9 mm. 



Cephalothorax : Length, 1.8 mm.; width, 1 mm. 

 Legs, 4312 ; first pair stoutest. 

 1st leg longer than 2d bj^ tarsus and metatarsus. 

 4th leg longer than 3d by tarsus and one-half meta- 

 tarsus. 



Cephalothorax moderately high ; cephalic part flat ; tho- 

 racic part falling slightly just behind the dorsal eyes, and then 

 steeply. Quadrangle of eyes one-fourth wider than long, very 

 slightly wider behind than in front, occupying a little more 

 than one-half the cephalothorax. Anterior eyes in a very 

 slightly curved row, touching ; midde twice as large as lateral. 

 Second row about half-way between first and third rows. Third 

 row as wide as cephalothorax at that place. Dorsal eyes larger 



