1892.] NATURAL SCIENCES OF PHILADELPHIA. 55 



Not uncommon, Sept. What I take to be the male is smaller 

 4mm. long ; the markings and color similar but brighter ; palpus 

 as figured. 



Xysticus lentus, nov. sp. Plate IT, fig. 67. 



Total length S 4-5mm. 



Length of femur I 3'8nim. tibial 2"2mm. 



Cephalothorax as broad as long and shorter than femur I. 



Cephalothorax reddish-brown on sides ; with a light stripe in 

 middle above, a darker somewhat triangular area in front part of 

 this light stripe terminated behind by a black triangle; a light 

 band connecting the S. E. ; clypeus and mandibles reddish-brown ; 

 sternum pale, with many small brown dots ; cox?e lineated with 

 brown ; underside of legs pale, with a narrow brown stripe and 

 numerous brown dots; above with darker blotches ; metatarsi and 

 tarsi pale. Abdomen brown above, with small white and dark 

 brown transverse spots on hinder part ; edge of abdomen with a 

 white line ; venter creased with white and brown. The M. E. equal 

 and form a square ; lower M. E. nearer to the larger S. E. than to 

 each other, eyes of the upper row at about equal distances. Two 

 rows of four to six spines on under side of tibiae and metatarsi I and 

 II. Male palpi with the two horny claws projecting from the 

 center as in X. triguttatus and X. discursmis. 



Two males. 



Xysticus triguttatus Keys. 



Several males ; one has one of the upper M. E. only about one- 

 sixth the size of the other. 



Xysticus nervosus, nov, sp. Plate III, figs. 8 and 8a. Plate IV, fig. 84. 



Total length 9 7- mm. 



Length of cephalothorax 3"2mm. breadth o'lmm. 



Length of sternum 2- mm. breadth l-5mm. 



Length of femur I 3-2mm. tibia I 2-5mm. 



Length of femur IV 2-5mm. tibia IV I'Smm. 



Distance between epigynum and spinnerets 2' mm. 



Cephalothorax light yellowish, sides mottled and veined with 

 reddish-brown ; a narrow dark-edged stripe on head terminated 

 behiud by a reddish point ; clypeus reddish-brown, in one case a 

 light stripe between the two rows of eyes ; falces yellowish, darker 

 toward the base ; mouth-parts, sternum, under side of coxje, femora 

 and palpi light yellow, palpi darker above, rest of legs yellowish- 

 brown, spotted with brown, and with tibia and metatarsi I and II 



