1908.] NATURAL SCIENCES OF PHILADELPHIA. 235 



front an indistinct outline of a lanceolate mark behind a chevron which 

 is commonly divided mesally into two triangular marks; near the middle 

 of lanceolate outline on each side, the dark line more strongly im- 

 pressed as a black triangular mark \\ ith apex forward ; a light spot 

 laterally from upper part of basal mark; behind on each side a series of 

 light spots which may be indistinct; front face of abdomen and antero- 

 lateral angles black; sides dark above, having black pubescence 

 intermixed with brown in fine spots and streaks; in middle the 

 sides are lighter, the brown pubescence being in larger spots. The 

 venter and commonly the lower part of sides black, but, especially at 

 sides, with spots of brown; often brown pubescence in four narrow lines 

 on venter, converging from lung slits to spinnerets, divide the black 

 of venter into three contiguous bands, much as in aspersa. Spin- 

 7ierets brown, Epigynum black or reddish black. 



Face moderate in height, hardly one-half the length of the massive 

 chelicerae. Cephalothorax above nearly straight and horizontal or but 

 little convex between third row of eyes and posterior declivity; the 

 posterior declivity short, only posterior end of dorsal groove being 

 upon it; sides rather strongly bulging behind; sides of face convex and 

 strongly slanting. 



First row of eyes straight or very nearly so, shorter than second row; 

 anterior median eyes distinctly larger than the lateral, less than their 

 radius apart, closer to the lateral eyes; anterior lateral eyes removed 

 from front margin of clypeus and from eyes of second row by about 

 once and a half their diameter; anterior median eyes less than their 

 diameter from eyes of second row ; eyes of second row less than their 

 diameter apart (about three-fourths); quadrangle of posterior ej'es 

 about one-fifth as long as the cephalothorax. 



Legs long ; tibia + patella of fourth legs a little longer than cephalo- 

 thorax and also longer than metatareus of same legs ; tibia + patella of 

 first pair of same length as cephalothorax ; patella of first legs imarmod, 

 patella of second armed anteriorly with a single spine; tibia and meta- 

 tarsus armed as usual; scopulse on anterior tai-si and metatarsi as usual; 

 scopulse of posterior tarsi divided by setose bands as usual. 



For form epigynum see PI. XVII, fig. 5. 



Total length, 18.5 mm. Length of cephalothorax, 9 mm.; width, 

 6.9 mm. 



Length of leg I, 24.5 mm. ; tib. + pat., 9 mm. ; met., 8.5 nun. 



Length of leg II, 22.8 mm. 



Length of leg III, 21.4 mm. 



Length of leg IV, 29.6 mm. ; tib. -|- pat., 9.3 mm. ; met., 8.5 mm. 



Male. — For structure of palpal organ see PL XVII, fig. 6. 



