1892.] NATURAL SCIENCES OF PHILADELPHIA. 59 



dish punctures, each supporting a blackish hair. Area occupied 

 by M. E. as long as broad, a little broader behind ; eyes of upper 

 row of equal size, and at about equal distances; the lower M. E. 

 equal the upper M. E. and are smaller than the lower S. E., to which 

 they are no nearer than to each other ; abdomen pointed behind ; 

 two rows of four to five spines on tibia I and II, two rows of six to 

 seven spines on metatarsi I and II. 

 One young specimen. 



Runcinia aleatorius Hentz. Plate III, figs. 18 and ISa. 

 Thomisics aleatorius Hentz <? . 

 Runcinia brendelU Kevs. 



Two females, one Avith abdomen white, the other with abdomen 

 yellow. Aug., on the campus. 



Tmarsus caudatus Hentz. 



Not uncommon in Sept., on trees and fences. 



Philodrominse. 

 Tibellus oblongus Walck. 



Common in sphagnum bogs, May. 



Philodromus vulgaris Hentz. Plate III, figs. 23 and 23a. 



Common. 

 Philodromus praelustris Keys. Plate III, fig. 19. 



What I take to be this species is not very common ; one speci- 

 men was taken in a house, Oct. 



Philodromus signifer, nov. sp. Plate III, fig. 20. 



Total length 9 jiiv. 5mm. 



Cephalothorax white or yellowish, dark brown each side ; clyj^eus 

 light, a brown band extending through the lower row of eyes and 

 ending in the S. E. of the upper row, here enlarged and extending 

 around the upper M. E. ; between the upper M. E. arises a short 

 median brown line, extending a short distance caudad ; a little re- 

 moved from the caudal end each side is a small brown puncture ; 

 legs white with brown markings ; several small spots on coxae ; a 

 band at middle and end of femora ; jjatella suffused with brown; 

 tibia with a band at each end and some small spots between ; meta- 

 tarsus and tarsus with spots, the latter often dirty white ; palpi white 

 with brown spots ; mandibles yellowish-white with a few brown 

 marks at base ; mouth-parts, sternum and venter white, lip a little 

 darker ; spinnerets yellowish white. Abdomen white with a dark 



