Superfamily Argiopoidea 



This spider makes an irregular, more or less sheet-like web. 

 supported by threads extending in all directions. It is found 

 in buildings or in protected places. 



Genus TEUTANA (Teu-ta'na) 



The posterior median eyes are fully as large as the anterior 

 median eyes; and the labium is long and pointed, more than half 

 as long as the endites (Fig. 364). The male has well-developed 

 stridulating organs. Only one 

 species occurs in the United 

 States. 



Teutana triangulosa. (T. 

 tri-an-gu-lo'sa). — The cephalo- 

 thorax is orange-brown; the legs 



Fig. 364. TEUTANA TRIANGULOSA 

 LABIUM AND ENDITES 



Fig. 36s. TEUTANA 

 TRIANGULOSA, FEMALE 



are light yellow, and very long; the abdomen brown, ornamented 

 with three series of yellow spots, one central and one on each 

 side (Fig. 365). The length of the body of the female is one 

 fifth to one fourth inch; of the male, one eighth inch. 



I have found this spider common in the basements of build- 

 ings, where usually its web is built in the lower angle of a window 

 in this respect contrasting strongly with the web of Tberidion 

 tepidariorum, which is usually built in an upper angle. The 

 principal part of the web is an imperfect sheet; a very common 

 feature of it is a number of vertical guy-lines extending down from 

 the sheet. The egg-sacs are made of white silk.loosely woven, with- 

 out a dense covering. The eggs are plainly visible through the walls 

 of the sac. 



Genus COLEOSOMA (Co-le-o-so'ma) 



The males of this genus differ from all others of the family 

 in the great development of the bitid plate which forms the ab- 



361 



