14 PECKHAM. [Vol. 2, 



SYNAGELES. 



Small spiders. Cephalothorax almost flat, widest at dorsal 

 eyes. Quadrangle of eyes longer than wide (differing in this 

 respect from all the other genera of this group), equally' 

 wide in front and behind or wider behind, occupying more 

 than one-half of the cephalothorax. Falces vertical. Legs 

 ( ,? ) 4132 or 4123 ; ( 5 ) 4231, 4321, 4123 or 4132. 



One new species, from North America. 



KEYSERLINGELLA. 



Spiders small. Cephalothorax almost flat above, without 

 constriction or depression. Quadrangle of eyes wider than 

 long, equally wide in front and behind, or wider behind, occu- 

 pying at least one-half of the cephalothorax. Falces vertical 

 or slightly inchned. Legs ( $ ) 4182 ; ( ? ) 4312. 



Two new species, from South America. 



DESCANSO. 



Spiders rather small. Cephalothorax rather low, almost 

 flat above, thoracic part grooved on the sides, posterior slope 

 more or less concave. Quadrangle of eyes wider than long, 

 wider behind than in front, occupying from two-fifths to 

 three-fifths of the cephalothorax. Falces vei'tical. Legs 4132, 

 first and second pairs enlarged. 



Females of two new species from Brazil. 



MAREKGO. 



Small spiders. Cephalothorax rather low and flat. 

 Clypeus and sides of cephalic part slanting inward. Quad- 

 rangle one-fourth wider than long, a little wider behind than 

 in front, occupjdng less than two-fifths of the cephalothorax _ 

 Legs (9) 4132, first much the stoutest. This genus resembles 

 Synageles. 



One species, from Ceylon. 



BELLOTA. 



Small spiders. Cephalothorax low and flat ; cephalic ajid 

 thoracic parts in the same plane ; sides of cephalic part verti- 

 cal. Quadrangle of eyes one-fourth wider than long, plainly 



