12 



THE COMMON SPIDERS 



touch the mandibles. The front row of eyes is nearly straight. 



The upper row is longer and more curved, with the middle eyes 



highest and farthest apart (fig. 39). 



The abdomen is large in the female, 



widest behind the middle, and a little 



pointed behind. The labium is not 



longer than wide, and the maxillae are 



straight, with the sides parallel. The 



sternum is oval, not so short and wide 



as in pratensis. The opening of the 



° ° air-tubes is halfway between the epigy- 



num and spinnerets (fig. 38), instead of 

 39 . . 



just in front of the spinnerets, as it is in 



most spiders. The spinnerets are two-jointed. 



The legs are slender and tapering, the fourth 



longest in females and the first in males. The 



cephalothorax has two longitudinal broken 



gray bands. The abdomen has a double row 



of spots in the middle and oblique rows of 



smaller spots each side. The oblique lines 



of spots extend under the abdomen halfway 



to the middle. 



Anyphaena calcarata. — The same size and 



color as A. incerta, with longer legs. The 



markings are the same in both species. 



The plainest difference between the females 



. is in the epigynum, the hard and dark parts 



of which are larger and longer in incerta. 



38, under side of fe- Another slight difference is in the shape 



male as far forward as 



end of sternum. 39, of the sternum, which in calcarata extends 

 eyes from in front. farther be tween the hind legs (fig. 42). In 



40, female enlarged ° \ t / 



41, max- incerta it is more pointed at the hinder end 



41 



Figs. 37, 38, 39, 40, 41 

 Anyphaena incerta. — 

 yi, pilpus of male 



four times. 



of mandible's. and shorter (fig. 38). The difference between 



