i6 



THE COMMON SPIDERS 



Clubiona crassipalpis, — A quarter of an inch long and pale, 

 without markings. The head is sometimes a little darker than 



the rest of the body, and the man- 

 dibles and ends of the male palpi 

 are always darker. The eyes of the 

 upper row are almost equidistant, 

 the middle pair only a little farther 

 apart than they are from the lateral 

 eyes. The mandibles of the male 

 (figs. 49, 50) are elongated as usual, 

 narrowed toward the end, and thickened in 

 front just above the mid- 

 dle. On the outer side 

 in front is a sharp ridge 

 that extends from the 

 base of the claw halfway 

 up the mandible. The 

 inner edges of the man- 

 dibles are thin and in- 

 clined backward toward 

 the mouth, but there is 

 no line or ridge between 

 the thick and thin por- 

 tions as in some other 

 species. The palpi of the 

 male (fig. 51) have the 

 patella and tibia both 

 short. The tibia is wid- 

 ened on the outer side 

 and laps over the tarsus, figs. 53, 54. ciubiona 

 extending in a blunt hook for half its length. pav''so7n"ie'show^ 

 Clubiona tibialis. — Quarter of an inch long, '"g large tibia. 54, 



"^ ... head and mandibles 



the same size and color as crassipalpis, with of male. 



Figs. 49, 50, 51, 52. Clu- 

 biona crassipalpis. — 49, 

 head and mandibles of 

 male from the left side. 



50, head and mandibles 

 of male from in front. 



51, palpus of male. 52, 

 maxillae, labium, and 

 ends of mandibles. 



