J. H. Emerton — Canadian Spiders. 417 



slight notch in the posterior edge, in one like PI. iv, fig. 5a, in the 

 other female less distinct. 



Two females and one young male from the mountains above Lag- 

 gan, between 6700 and 8500 ft. 



Xysticus pulverulentus, new sp. 



Female, 5"™ long. This resembles in color and markings X. 

 stomachosus but is smaller and less hairy. The general color is 

 white with dark brown markings. The cephalothorax has the mid- 

 dle third light with two fine lines extending back from between the 

 eyes and a small dark spot near the posterior end. The sides of the 

 cephalothorax are dark brown in spots and irregular lines, each side 

 having behind two black spots under the front of the abdomen. The 

 legs are spotted with brown, generally darker at the ends of the 

 joints. A distinct black spot on the end of tlie fourth femur. The 

 abdomen has three or four pairs of transverse dark markings larger 

 or smaller in different individuals. In the male there are the usual 

 differences from the female. 



The epigynum has a single opening in which are two bent dark 

 lines, and behind it two small brown spots, PL iv, fig. 6. 



The male palpi resemble those of stomachosus. The processes on 

 the tibia are larger and those of the palpal organ smaller than in 

 that species, PI. iv, figs. 6a, Qh. 



Male and females near Laggan. 



Cariarachne versicolor KejserliDg. 



Spinnen Americas, Laterigradag, 1880. Em., New Eag. Thomisidas, 1892. 

 Rocky Mts., J. B. Tyrrell, 1885. 



Oxyptila conspurcata Thor. 



Bull. Haydea'sU. S. Geol. Survey, vol. iii, No. 2, 187t. 



This little spider is only 3*5™™ in length, and the cephalothorax 

 less than 2'"'^' long and not as wide as long. The head is wide and 

 marked off from the thorax by a sharp bend just in front of the first 

 legs. The lateral eyes are larger than the middle eyes and farther 

 from them than they are from each other. The colors yellowish 

 white and various shades of gray and brown. The cephalothorax is 

 sometimes nearly covered with obscure brown markings, PI. iv, figs. 

 7, 7a, ^h. In others there is a distinct light middle stripe and 

 various dark markings at the sides. Other young individuals have 

 a light spot in the middle with a dark blackish band each side; and 



