Araneides of the United States.- 395 



Several, perhaps all species, construct on bushes a web some- 

 what like that of Agelena, for the protection of the cocoon, 

 and the rearing of the young. This is another resemblance 



to MiCROMMATA. 



Order of the species Dolomedes. 



Tribe 1. AnBOREiE, middle eyes much larger than the rest. 



Tribe II. TENEBROSiE, eyes suhequal, lower row as much 

 curved as the upper. 



Tribe III. Ripuaria, eyes suhequal, lower row straight or 

 slightly curved. 



(ArborecE.) 1. DOLEMEDES TENAX. 

 Plate XIX. Fig. 7. 



Description. Grayish ; cephalothorax edged with black, 

 varied with blackish on the disk ; abdomen also edged with 

 black near the base, varied longitudinally, with blackish on iFie 

 disk, about three whitish dots on each side near the apex, 

 pale beneath, with two obscure longitudinal lines ; feet, with 

 blackish bands above, pale beneath. CaTl. 3. Never large. 



Observations. This distinct species is always found on up- 

 right sticks, small trees, &c. turning round to avoid an attack 

 in the same manner as Oxyopes scalaris, which it resembles 

 so much that for a time I could not distinguish one from the 

 other. It spreads its feet like Tho3iisus. The form of its 

 cephalothorax is peculiar, the head being elevated and well- 

 defined from the thorax. It must not be taken for the young 

 of D. tenebrosus, which resembles the old, and dwells in dark 

 places, whereas this is quite a diurnal species, fond of broad 

 dayhght. 



Habitat. North Carolina. 



2. DOLOMEDES HASTULATUS. 

 Plate XVIII. Fig. 9. 



Description. Pale or greenish gray ; ceplialothorax varied 

 with blackish ; abdomen with a blackish band, with rounded 



