THE CINIFLONID^E, -OR CRIBELLATA 



33^ 





This group comprises several families that differ 

 greatly in form and habits, but agree in having 

 peculiar spinning organs, different from those of all 

 the other spiders. They have the usual six spinnerets 

 and in addition the cribellum (fig. 469), a flat, wide 

 spinning organ, close in front of the other spinnerets 



SfeS^T - ^ an< ^ covered with 



finer spinning 

 tubes. Besides this 

 additional spinning 



Figs. 469, 470. — 469, cribellum. 470, calamis- organ they have On 

 trum of Amaurobius sylvestris. - -. . , , ,, 



the hind legs the 

 calamistrum (fig. 470), a row of hairs that is used to 

 draw out a loose band of silk from the spinnerets. 

 Most of our species belong to the genera Dictyna and 

 Amaurobius and resemble Tegenaria (pp. 96-99) in 

 their feet with three claws, in the arrangement of the 

 eyes, and in their general form and color. The others 

 belong to the small and peculiar genera Filistata, 

 Hyptiotes, and Uloborus. 



470 



THE GENUS DICTYNA 



The Dictynas are all small spiders, not more 

 than a sixth of an inch in length, but are 

 brightly colored and live in webs in open places, 

 where they cannot fail to be seen by any one 



205 



