1908.] NATURAL SCIENCES OF PHILADELPHIA. 251 



Length of leg I, 18.4 mm.; tib. + pat., 5.9 mm.; met., 4 mm. 



Length of leg II, 17.8 mm. 



Length of leg III, 17.3 mm. 



Length of leg IV, 22.5 mm. ; tib. + pat., 7.2 mm. ; met., 6 mm. 



Male. — Coloration similar to female; pattern on abdomen rather 

 more distinct and spots on sides fewer. 



Patella I and II armed both in front and behind. Tibia and patella 

 of palpus siibequal in length and thickness, together as long as tarsus; 

 tarsus much thicker than preceding joints. 



For structure of palpal organ see PL XVIII, fig. 7. 



Total length, 13.3 mm. Length of cephalothorax, 6.7 mm.; width, 

 5 mm. 



Length of leg I, 23.6 mm.; tib. + pat., 8.1 mm.; met., 5.9 nam. 



Length of leg II, 21.8 mm. 



Length of leg III, 19.3 mm. 



Length of leg IV, 26.3 mm.; tib. + pat., 8.1 mm.; met., 7.6 mm. 



Type locality. — Colorado. 



Known localities. — Colorado !, Arizona !, New Mexico, Kansas !. 



Lycosa erratica Hentz, 1842. 



i^ ^ (Journ. Bost. Soc. Nat. Hist., 4, p. 388.) 



Female. — Sides of cephalothorax blackish brown, less commonly paler; 

 a reddish yellow or reddish brown median band, narrowest behind, 

 which widens distinctly at posterior end of pars cephalica and becomes 

 as wide as third eye row, from which point it contracts to a narrow- 

 stripe or line which continues forward to the first eye row; along each 

 lateral margin a light band similarly colored to the median one, the 

 lateral bands bisected by a dark line at least anteriorly; the median 

 pale band clothed with light gray or brownish-white pubescence which 

 between the eyes becomes yellowish, the lateral bands similarly clothed ; 

 sides of cephalothorax clothed with similar hair intermixed with much 

 black which is most abundant along each side of the median band, but 

 becomes more and more sparse below toward the margins. Cheliceras 

 dark reddish brown, clothed with short yellowish pubescence and with 

 intermixed longer black bristles, a fringe of long dark gray hair along 

 the margin of furrow. Labium and endites reddish brown. Sternum 

 blackish, with usually a paler median stripe; clothed with grayish 

 brown and more scattered blackish hairs. Legs and palpi brown 

 covered with a short brownish gray pubescence with the usual longer 

 blackish hairs intermixed ; all femora with dark cross-bands or annula- 

 tions which are present also at the ends and in the middle of the tarsi 



