131 



Remarks. This svibgenus is closely related to Epeira, and 

 has nearly the same habits. The species composing it are read- 

 ily recognized by their long legs extended upon their geomet- 

 rical webs. They differ greatly in the length of their cheliceres, 

 but ill other respects constitute a natural subdivision. 



1. Tetragnatha grallator. 



PI. 15, figs. 1, 2. 



Description. Female : Testaceous, abdomen livid above, 

 with a scalloped longitudinal darkish band, darker beneath, with 

 a black longitudinal line and two yellow longitudinal [2 7 J ones. 

 Cheliceres witli two rows of teeth, one larger near the apex. 

 Male: Wholly testaceous or livid. Cheliceres much larger, 

 arched Avith two rows of teeth and three large prongs ; one 

 superior bifurcated at the end. 



Observations. This spider makes its web on bushes on the 

 margin of springs and rivers. When on a twig it extends all its 

 legs in one straight line. Its web is scarcely ever perpendicular, 

 but inclined, sometimes hoi'izontal. 



This may be the T. elongata of Bosc ; but as the name may 

 apply to my T. laboriosa, there will be less confusion in using 

 this appellation. 



Habitat. Pennsylvania, North and South Carolina, Alabama, 

 etc. 



[Taken in April and May, one specimen in a dry place in a 

 tree far from water. Supplement.^ 

 [Ohio, Wm. Holden. j. n e.] 



2. Tetragnatha laboriosa. 



PI. 15. fig. 3. 



Description. Rufo-testaceous ; abdomen yellowish with black 

 branching lines above ; a black central longitudinal line, and 

 two yellow ones beneath ; feet and cheliceres of moderate 

 length ; male with the same marking ; cheliceres larger but not 

 as elongated as in T. grallator. 



