Superfamily Argiopoidea 



floors of dwelling houses, in outhouses, and in other buildings. 

 It is also found under logs and stones in the fields. 



Amaurobius americanus (A. a-mer-i-ca'nus). — The body is 

 one fourth inch in length, and of a deep black colour, except the 





' 





Fig. 258. EPIGYNUM OF 

 AMAUROBIUS FEROX 



Fig. 259. TIBIA OF 



PALPUS OF MALE 



OF AMAUROBIUS 



FEROX 



cephalothorax, which is of a dull orange colour; the abdomen is 

 usually without markings; but in some individuals there are a few 

 light gray spots in pairs on the abdomen. 



Emerton, who first described this species, states that it 

 lives under stones in the hottest and dryest places. It is the 

 Titanoeca americanus of Emerton. 



Genus LATHYS (La'thys) 



Five species of this 

 genus are known from the 

 United States. The follow- 

 ing will serve as examples. 



Lathy s foxii (L.fox'i-i). 

 — The length of the body 

 is less than one twelfth 

 inch. The cephalothorax 

 is yellowish; the abdomen 

 grayish white with dark 

 gray markings, consisting 

 of about five transverse 

 lines. The accompanying 

 figures (Fig. 260) are by 

 Doctor Marx ('91 ), who first 

 described the species. It was described from specimens collected 

 in Tennessee; and it has been taken at Ithaca, N. Y. Its range 

 is therefore quite wide. — This is the Prodalia foxii of Marx. 



Fig. 260. LATHYS FOXII 



a, i 1 f .11 !• , 



labium and endites ■!, epigynum (after Marx) 



279 



