1908.] NATURAL SCIENCES OF PHILADELPHIA. 315 



none, of tibia I below 2, 2, 2, within 1 ; spines of second legs the same 

 as for I. Posterior spinnerets twice as long as the anterior and dis- 

 tinctly two-jointed ; the middle pair very slender but as long as the 

 anterior. 



Total length, 6.2 mm. Length of cephalothorax, 2.8 mm.; width, 

 -2.2 mm. 



Length of leg I, 7.9 mm. ; tib. + pat., 2.8 mm. ; met., 1.7 mm. 



Length of leg II, 7.3 nmi. 



Length of leg III, 6.8 mm. 



Length of leg IV, 10.1 mm.; tib. + pat., 3.3 mm.; met., 3 mm. 



Syn.— 1890. Plraia prodigiosa Marx, Proc. U. S. N. M., 12, p. 64. 



Locality. — Illinois (Peoria). 

 Types in collection of Dr. Koch. 



Pirata bilobata (Tullgren), 1901. 



(Bih. till sv. Vet.-Akad. Handl., B. 27, Abd. 4, No. 1, p. 22, Plate, fig. 12.) 



Female. — Cephalothorax light brown, clothed with short dark 

 ad pressed hairs and strewed with long dark upturned bristly hairs; the 

 pars cephalica with three lighter bands and at the margins of pars 

 thoracica a broad liglit band. Chelicerce light bro\\ai and strewed with 

 long bristly hairs. Endites yellow and clothed by long bristly hairs. 

 Sternum light brown, clothed by long black bristly hairs. Legs pale 

 brown. Abdomen above dark brown with a lighter middle band and 

 three pairs of very small white spots ; the venter light yellowish brown. 

 Epigynum. dark corneous. 



Cephalothorax with a long and distinct central furrow on pars 

 thoracica ; in length a little shorter than the length of tibia and patella 

 and the breadth shorter than the length of tibia of the fourth pair of 

 legs. Front row of eyes distinctly procurved ; the intervals about equal ; 

 the central eyes nearly twice as large as the lateral eyes ; the interspace 

 between the central eyes and the margin of the clj^peus as long as the 

 diameter of the eyes; eyes of the middle row separated from each other 

 by an interspace about as broad as their diameter and separated from 

 the central anterior eyes by an interspace about as long as the diameter 

 of these eyes; the distance from the posterior eyes a little longer 

 than the diameter of the middle eyes. Chelicerce about twice as long as 

 the face, tapering at the apex. Endites about twice as long as labium. 



The epigynum bilobate, the lobes rounded. 



Total length, 3.8 mm. Length of cephalothorax, 2.5 mm.; width, 

 1.8 mm. 



