Hood — Nint New Thysanoptera from the United States. 163 



6, 39/*; 7, 34m; 8, 28m; total length of antenna, .266 nun.; width at seg- 

 ment 4, .025 nun. 



Muli , macropterous. — Length about .9 nun. Tarsal tooth wanting. 

 Abdomen slender. 



Described from nine females and four males, as follows: Luna, Texas, 

 July 7. L908, in sweepings, ('. A. Hart, female and male (holotype and 

 allotype); Grand Tower, Parker, ami Pulaski, Illinois, -May 29 to July 

 14, L909, in sweepings from grass, ('. A. Hart; Vienna, Virginia, May 

 2.~>, 1913, on artichoke, .1. D. H., one female; Cabin John, Maryland 

 (near Washington, l». C. ), June 8, 1913, in sweepings, J. 1>. II., one 

 female. 



Named in honor of Mr. Charles A. Hart, of the Illinois State Labora- 

 tory ni Natural History, in recognition of his indefatigable Held work on 

 Thysanoptera. 



Liothrips sambuci sp. now 



Female. — Length about 2 mm. Color dark brown or black. Head 

 about one and one-fourth times as long as wide; cheeks slightly converg- 

 ing to base; eyes about .36 as long as head ; postocular bristle- equal in 

 length to eyes, nearly pointed. Antennae less than twice as long as head; 

 segments one and two nearly black, the latter paler toward apex; :', clear 

 orange yellow ; -I yellow, very slightly shaded on inner and outer sur- 

 faces; 5-8 nearly black, the pedicels of 5-7 pale gray. Protborax .7 as 

 long as head and (inclusive of coxse) 2.1 times as wide as long; all 

 bristles present, nearly pointed, dark in color. Legs black. Wings of 

 fore pair with brown cloud in basal half of median third ; posterior 

 fringe double for 8 or 9 hairs. Abdomen moderately stout; tube about 

 .8 as long as head and less than two and one-half times as long as width 

 at base; all abdominal bristles nearly black. 



Measurements of holotype. — Length 2 mm.; head, length . 2( >4 mm., 

 width .'_<>s nun. ; protborax, length .180 mm., width ( inclusive of coxa- ) 

 .382 mm.; pterothorax, width .444 mm.; abdomen, width .516 mm.; 

 tube, length .210 mm., width at base .087 nun., at apex .044 nun. 

 Antennal segments: 1, 36m; 2, 63m; 3, 78m; 1, 73m; 5, 72m; <>, 71m: 7, 

 65m: 8,33m; total length of antenna, .49 mm.; width at segment 4, 

 .039 mm. 



Described from one female taken on elder (Sambucus canadensis L. ), 

 at Laurel, Maryland, June 30, 1912, by E. B. Marshall. 



Liothrips montanus sp. nov. 



Female. — Allied to umbripennis Hood. Color dark brown or black. 

 lb-ad about 1.2 times as long as wide; cheeks rounded, converging to 

 base; eyes not protruding, one-third as long as head, ventral interval 

 about L.5 times their width; postocular bristles blunt, equal in length to 

 eye. Antenna- about twice as long as head; segments 1 and 2 nearly- 

 black, the latter paler toward apex; :! clear orange yellow ; 4-8 nearly 



