1892.] NATURAL SCIENCES OF PHILADELPHIA. 63 



none of the brown extends over into the white dorsum as in 

 P. oniatus; above on dorsum three somewhat broad brown stripes, 

 one mesal ending at the middle of the abdomen ; behind this a 

 broader one on each side extending two-thirds of the way to the 

 spinnerets ; falces, mouth-parts and sternum yellowish-gray; venter 

 gray or white; spinnerets darker at tips; epigynum reddish-brown, 

 eyes on white hills. Abdomen oval, almost twice as long as wide, 

 not much wider than cephalothorax ; eyes equal, about as usual ; 

 sternum prolonged between the hind coxte ; anterior angles sharp ; 

 sides pointed between the coxse II and III ; a series of black dots 

 around the edge. 

 Uncommon. 



Philodromus minusculus, nov. sp. Plate II, fig. 39. 



Total length $ 2-9mm. 



Cephalothorax white ; brown on each side ; abdomen white above, 

 black around the sides : legs light Avith faint darker bands toward 

 the tip ; sternum broad, extending between the hind coxae, concave 

 in front; abdomen flat ; venter light, falces reddish ; mouth-parts a 

 little yellowish ; the black along the sides is continuous while in 

 P. minutus it is interrupted in the middle. Close to P. mbiutus, 

 but no stripes on dorsum, the white much clearer while in P. minutus 

 the white is yellowish. 



One specimen. 



Philodromus exilis, nov. sp. Plate II, fig. 40. 



Total length 9 3-8mm. 



Length of cephalothorax l-4mm. breadth l-4mm. 



Length of abdomen 2"4mm. breadth l-2mm. 



Lentrth of sternum 'Smm. breadth •6mm. 



Cephalothorax light yellow in middle, sides thickly veined Avith 

 yellow-brown ; clypeus yellowish, mandibles and palpi nearly white ; 

 sternum whitish, with little punctures most numerous on the sides, 

 of a lavender color ; lung-plates white ; epigynum reddish-yellow ; 

 spinnerets yellowish ; venter whitish with lavender punctures, grow- 

 ing more numerous on the sides and behind ; dorsum and upper 

 sides of abdomen white washed with lavender, darkest on the sides 

 and behind ; the plan of markings is similar to P. rufus, a faint 

 median stripe on front of dorsum ; behind this two darker stripes 

 -which are indistinctly connected with the side stripe ; coxae 

 yelloAvish ; legs all broken off; the sternum is much narrower than 



