70 Wisconsin Academy of Sciences^ Arts and Letters. 



ASTIA VITTATA Hentz. 



Plate I, figure 52, 52a. Plate V, figure 52, 52a. 



Syn.: 1845. At^'yvb vittatus H., Jour. Bost. Soc. Nat. Hist., Vol. V. 



1845. " niger ( $, ) id., ibid. 



1846. Plexippus undatus C. K., Die Araclin. , XIII, p. 123. 

 1848. Maevia pencillata ( 3 ) C- K. , Die Araclin. . XIV, p. 69. 

 1875. Attus vittatus H., Coll. Araclin. Writ, by N. M. Hentz. Ed. 



by Burgess, Boston, p. 64. 

 1875. " niger (S)id., ibid., p. 63. 



$ . Total length 7 mm. Width of abdomen 2.1 mm. 



Ceplialothorax: length 3; width 1.9; height 1.7. 



Legs 5.4, 5, 5.1, 6.3; patella and tibia of the first, 2.8; patella and tibia of 

 the third, 2.3; pateUa and tibia of the fourth, 2.8; metatarsus and 

 tarsus of the fourth, 2.8. 

 $ . Total length 8 mm. Width of abdomen 2.8. 



Cephalothorax: length 3.4; width 2.4; height 2. 



Legs 5.7, 5.6, 6.3, 6.9; patella and tibia of the first. 3.6; patella and tibia of 

 the third, 2.9; patella and tibia of the fourth, 3.2; metatarsus and 

 tarsus of the fourth, 3. 



Cephalothorax moderately high, nearly plane, dilated behind dorsal eyes, 

 with sides nearly vertical in front, and rounded behind; cephahc 

 part a httle inchned forward; thoracic part slanting but little in the 

 first half, steeply in the second. Ocular area occupying two-fifths 

 of the cephalothorax, one-third wider than long, a httle wider in front 

 than behind; anterior eyes projecting forward, in a straight row; 

 middle eyes touching; lateral one half as large as middle eyes, and 

 slightly separated from them; eyes of second row half way between 

 lateral and dorsal eyes; dorsal a little smaherthan lateral eyes, fur- 

 ther from each other than from the lateral borders, f ormiag a row 

 not quite so wide as the cephalothorax at that place. Clypeus ( 6 ) 

 one-half, ($) one-third as high as middle eyes, slightly inclined. 

 Falces ( $ ) but httle wider than middle eyes, one-half longer than 

 face, vertical, parallel; s weaker and shorter than in $ ; fang weak. 

 MaxiUae parallel, enlarged and rounded at extremity; labium a httle 

 longer than wide, one-half as long as maxillae, contracted and blunt 

 at tip. Sternum nearly twice as long as wide, scarcely projecting be- 

 tween anterior coxas; anterior coxa3 almost touching. ( 2 ) first legs 

 stoutest with femur, patella and tibia enlarged; ($ $) with spines on 

 trochanters, femora, patellae, tibise and metatarsi of the four pairs, 

 those on the femora numerous at the distal ends; ( $ ) legs and spines 

 weaker than in ^ . 



Coloration: $ . Presenting two distinct varieties; the first has the tho- 

 racic part of the cephalothorax light brown and glabrous with a cen- 



