7\ illinoicusis Keys., and T. fluviatilis Keys., I consider as bc- 

 lonirint^ to this species; both were described from females. 



Eugnatha :?. f 



Tibial joint of the palpus not lono-er than patella, niaiulihles shorter than the 

 cephalotliorax vermiformis 



Tibial joint of the palpus twice as long as patella 



iMandibles shorter than the cephalothorax, a laigc tooth on the inner margin, 



outer tooth bifid at tip straminea 



Mandibles as long as the cephalotliorax, all teeth on iiinei margin small, outer 

 tooth not bifid * pallida 



Eugnatha n. 



Maxilla; not reaching to the end of fang, mandibles projecting almost horizontally 



pallida 



Maxilht reaching to end of fang, mandibles projecting more vertically: 



(^uter side of mandibles nearly straight .... vermiformis 

 Outer side of mandibles concave straminea 



Eugnatha vermiformis Em. 



This species is somewhat rare. Length of female 12 mm. 

 N. Y., N. Eng., L. I. 



Eugnatha pallida Banks. 



The female has mandibles longer than vcriiiifoi-Diis, the teeth 

 are smaller than in straiiiiiica. The outer margin of the mandibles 

 more like vcniiifonnis. 



One cT N, Y., 9 mm.; one d N. Y. and one Fla. 7 mm. 



One 9 N. Y. and one Fla. 12 mm.; one v' Fla. 9.5 mm. 



Eugnatha straminea J\iii. 



'IMie abdomen of the female projects a little beyond the spinn- 

 erets but not once its diameter. Length of female 10 mm. N. Eng., 

 N. Y., D. C, Mich. ; 



Eucta. 

 Eucta caudata Km. \ 



The male is similar to the female but smaller, the tibial joint , 

 of the palpus not miuh longer than the patellar. This is rare in ' 

 the north but (piite common in Florida. — Can., N. ^'., N. Eng., 

 1). C, Fla. 



Tlie species of Xxsticiis mav be arranged in three groti])s; I 



those that have clavate hairs ■A'> X . iiii^romaitilatiis awkS. X . ftrociilus; ; 



those that have pale line on the anterior legs as A', gulosus., X. Urn- ' 



batus, etc. Those without the pale line on legs as X. nervosus, etc. ! 



