CHAMBERLIN: new spiders of the family AVICI'LARIIDAE. 41 



ber scarcely or not at all clavate from al)o\-e base to middle, distally 

 acuminate; plumose, much larger than in C. mcdius. Xo plumose 

 hairs on femur I. 



In the male palpus the tibia is not enlarged; narrowing distad as 

 usual. Process of bulb compressed laterally though narrow, atten- 

 uated toward tip and acutely pointed; in anterior view curving ectad 

 distally, the curve even, the process not geniculate. 



Scopula of tarsus IV in the male with a row of a few setae along 

 median line, but these only vaguely dividing the scopula, while in the 

 female no setose line at all is detectable, the condition there being 

 that of the Eurypelmateae; in this respect the species agrees with 

 C. bonkotei Cambridge described from the Bahamas and by its author 

 made the type of Lyroscelus. 



Tibia I in the male with the inferior spur slender, narrowed, and 

 conspicuously curving mesad at distal end. Superior process short, 

 bent toward the inferior process, expanded at end into a small sub- 

 circular plate-like form. Metatarsus a little bent dorsad near level 

 touched by the inferior process of tibia when the joint is flexed. 



Male (type). Length 37 mm. 



Cephalothorax: length, 17 mm.; width, 14 mm. 



Female. Cephalothorax: length, 19.7; width, 17 mm. 



This is a larger species than C. medium and differs as well from that 

 form in proportions; c. g. tib.+ pat. I is a little longer than tib.-j- 

 pat. IV in both sexes, and metatarsus IV in the male is shorter than 

 the cephalothorax whereas in C. medius it is decidedly longer while a 

 very characteristic feature is the essentially entire condition of the 

 scopula of tarsus IV; the process of the palpal organ is very nearly 

 the same but it is proportionately more slender; tibia I is equal to 



