18 



THE COMMON SPIDERS 



Clubiona rubra. — Smaller than the other species, a sixth to a 

 fifth of an inch long. Cephalothorax light yellow brown, darker 



toward the front. Abdomen pale in 

 front and darkened with brownish red 

 at the sides and behind and along the 

 middle of the back. The hind middle 

 eyes are nearly twice as far apart as 

 they are from the lateral eyes. The 

 fourth legs are 

 longest in both 

 sexes, and there 

 is little difference 



0° ° o 



oooo u 



58 



59 



O O 



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Figs. 58, 59. Clubiona rubra. — 



58, front of head and mandibles jn the length of 

 of male. 59, palpus of male. 



the legs of the 

 two sexes. The mandibles of the female 

 are but little swelled in front, not much 

 more than those of the male, and the male 

 mandibles (fig. 58) are only a little nar- 

 rowed at the ends. The male palpi (fig. 59) 

 have the tibia very much widened on the 

 outer side, with a short tooth in the middle 

 and two larger short processes on the outer 

 side. The palpal organ has a large dark- 

 colored process in the middle. The epigy- 

 num is pointed behind, with a notch in the 

 middle and two black spots under the skin 

 toward the front of the abdomen. 



Clubiona ornata. — This is one of the few 

 Clubionas that have markings on the abdo- 

 men. The general color is pale as usual, 

 but the abdomen has a dark stripe in the middle, broken into 

 spots behind and bordered by pale yellow. At the sides are 

 oblique dark and light transverse markings. These marks are 



Figs. 60, 61, 62. Clubiona 

 ornata. — 60, back of fe- 

 male enlarged four times 

 to show markings. 61, 

 palpus of male. 62, front 

 of head and mandibles of 

 male. 



