312 Wisccnsin Academy of Sciences, Arts, and Letters. 



faustiis by having only one apoplij^sis on the tibia of the palpus, 

 and from octopunctatus by having the tube of the palpus long 

 and spirally curved, instead of short and straight. Vigens is 

 distinguished from faustiis by having only one apophysis on the 

 tibia of the palpus, and from octoiyunctatus by the tube of the 

 palpus being curved. Faustus is distinguished from octopunc- 

 tatus by having two apophyses on the tibia of the palpus. 



4. Falces vei'tical or slightly inclined, not swollen, v^^ithout 

 white hairs on the front face, cuprinus, tropicus and ruber. 



Tropicus is distiuguished by the short curved horn on the 

 under proximal part of each falx. Ruber is distinguished from 

 cuprinus by having the falces equally wide throughout their 

 length, instead of wide at the base and narrow at the end. 



This leaves us a number of American species in which the 

 first leg of the male is not strikingly long, the spiders being 

 rather small, from 4.5 to 5.5 millimeters long. These species 

 are vegeius, perfcctus, per nix, bisquepunctatus Tacz., montanus 

 Em., capitatus Tlentz, arizonensis, Manii, proxima, lionduren- 

 sis, flavipedes, centralis and Smlthii. Of these, vegetus is dis- 

 tinguished by its golden-green coloring, without white bands; 

 perfectus by the white band down the middle of the abdomen; 

 pernix by the two pairs of curved white bands on the posterior 

 part of the dorsum; bisquepunctatus by the curved horn (simi- 

 lar to that of tropicus) on the falces. The remaining species 

 are very similar in form and coloring, and are best. distinguished 

 by the difierences in the palpus. Capitatus has the tube 

 doubled, coming off from the end of the bulb. Montanus, prox- 

 i^na and liondurensis have all a stout, straight tube from the end 

 of the bulb, and must be separated by their specific descriptions. 

 Manii and Smithii have a straight, slender tube from the end 

 of the bulb, Smithii being distinguished from Manii by having 

 the apophysis on the tibia of the palpus larger, and curved. In 

 arizonensis there is a stout, curved tube from the side of the end 

 of the bulb. In centralis the tube also comes from the side of 

 the end, but is slender and curved. In flavipedes the tube is 

 bifurcated to its insertion at the end of the bulb. This species 

 has the first and second pairs of legs light brown with a black 

 line along the anterior faces of the femur, patella and tibia. 



