Superfamily Argiopoidea 



LL. Abdomen without a hump on each 

 side. 

 M. First pair of legs longer than 

 the fourth pair; legs usually 

 long. P. 344. Theridion 

 MM. Fourth pair of legs longer than 

 the first pair, all short. P. 365. 

 Pedanostethus 

 EE. Sternum broad and truncate behind. All small 

 spiders measuring one twelfth inch or less in 

 length. 

 F. Abdomen furnished with several prominent 

 humps. P. 356. Ulesanis 



FF. Abdomen not furnished with humps. 



G. Cephalothorax with numerous, small, cres- 

 cent-shaped elevations, each at one side 

 of a puncture. P. 359. Crustulina 



GG. Cephalothorax without crescent-shaped ele- 

 vations. 

 H. Cuticle of abdomen soft, without horny 

 shields or sigilla. P. 367. Theonoe^ 

 HH. Abdomen with a shield or with sigilla. 



I. Median eyes subequal or the anterior 

 larger than the posterior. P. 366. 



HlSTAGONIE^E 



II. Anterior median eyes smaller than the 

 other eyes, usually much smaller. P. 367. 



Pholcommate^ 



The three genera Bellinda, Chrysso, and Gaucelmus, each of 



which is represented by a single species found in Florida, are not 



included in the above table, or in the following account of the 



family. 



Genus ARIAMNES (Ar-i-am'nes) 



The lateral eyes of each side are close together; the middle 

 eyes are widely separated, those of each side being near to the 

 lateral eyes, thus forming a group of four eyes on each side. The 

 cephalothorax has a deep transverse furrow near the middle, and 

 the abdomen is elongate. 



These spiders are remarkable for the slender form and great 



336 



