68 



Tribe VI. Ambulators ; legs usually slender, the first 

 pair longest, the fourth next. 



39. Attus mitratus. 

 PL 9, fig. 9. 



Description. Pale above and beneath ; cephalothorax with 

 [364] a broad pale brownish band ; abdomen with a pale 

 brownish band, interrupted with yellowish in about three 

 places ; feet, 1. 4. 2. 3. A small species. 



Observations. This is not a rare species. It is usually found 

 on plants, moving slowly on the stems. 



Habitat. Alabama. April - May. 



[Only males were found. Supplement.] 



40. Attus sylvanus. 

 PL 9, fig* 10. 



Description. Piceous ; cephalothorax reddish anteriorly, 

 with a yellowish spot on the disk, and four oblique slender 

 lines of the same color ; abdomen with two parallel longitudi- 

 nal yellowish lines ; thighs rufous at base, except the first pair ; 

 feet, 1. 3. 2. 4. 



Observations. This graceful species is found commonly on 

 the trunks of trees, moving rather slowly, and walking back- 

 wards when threatened by an enemy. It moves its anterior 

 feet like palpi, as if to feel its way in its progression. 



Habitat. South Carolina. 



[PI. 18, fig. 58, eyes ; fig. 108, tropin. Supplement.'] 



41. Attus superciliosus. 

 PL 9, fig. 11. 



Description. Cephalothorax black between the eyes, deep 

 ferruginous at base, covered anteriorly with golden or greenish 

 scales, a tuft of hairs between the eyes ; abdomen black, with 

 the same kind of scales, the absence of which forms obsolete 



