20 Wisconsin Acadenuj of Sciences^ Arts and Letters. 



PHIDIPPUS OPIFEX McCooK. 



Plate II, figure 11. 



Syn. : 1873. Attus opifex McCook, Proc. Acad. Nat. Sci. of Pliiladelpliia, 

 p. 276. 



y . Total length, 15 mm. Width of abdomen, 7 mm. 



Cephalothorax: length, 6.3; width, 4.9; height, 3.5. 



Legs 13.3, 11.1, 10.4, 14.2; patella and tibia of the first, 5.2; patella and 

 tibia of the third, 3.8; patella and tibia, fourth, 5.2; metatarsus and 

 tarsus of the fourth, 4.7. 



Quadrangle of eyes two-thirds wider than long. Lateral anterior eyes more 

 than one-half as large as middle eyes, separated from them by two- 

 thirds their own diameter. Middle eyes plainly separated. Clypeus 

 one-half as high as middle eyes. Falces wider than the two middle 

 eyes, three times as long as face, inclined forward, divergent. Max- 

 illae parallel, enlarged and blunt at extremity, slanting within 

 toward labium. Labium one-lialf as long as maxiUge. Sternum 

 projecting but little between anterior coxae. Anterior coxse sepa- 

 rated by width of labium. 



Coloration: Cephalothorax dark reddish, covered with white hair, and 

 having a black marginal line. Clypeus and face covered with long 

 white hairs. Abdomen black, covered with gray hair, with four 

 white dots on the anterior part of the dorsum. Falces black with 

 white hairs at base. Mouth-parts brown. Stei"mum, coxse and ven- 

 ter covered with white hairs. Palpi light reddish brown, with long 

 white hairs. Legs banded with black and dark reddish brown, with 

 some white hairs, especially below. The hairs on cephalothorax, ab- 

 domen and venter are scale-like. 



Habitat: California. 



PHIDIPPUS JOHNSONII Peckham. 



Plate I, figure 14. Plate II, figures 14, 14a. 



Syn.: Attus johnsonii P., Descr. new or little known Attidse of U. S., 

 p. 22. 



S . Total length 10 mm. Width of abdomen 3.2 mm. 



Cephalothorax: length 5.1; width 3.3; height 2.1. 



Legs 10.9, 8.6, 8.9, 10.9; patella and tibia of the first, 4.8; patella and tibia 

 of the third, 3.2; patella and tibia of the fourth, 4; metatarsus and 

 tarsus of the fourth, 3.3. 



Lateral eyes of first row one-half as large as middle eyes, and separated from 

 them by half their own diameter. Clypeus half as high as middle 

 eyes. Maxillae parallel, with sharp outer corners, and slanting within 

 toward the labium. Labium a little longer than wide, more than one- 



