Hood — New Genera and Species of N. A. Thysanoptera. 75 



Prothorax two-thirds as long as head, and ( including coxse) about 2.3 

 times as wide as long; all spines present, long, pointed, brown in color, 

 the two pairs near the posterior angles longest; coxa! spine pointed, a 

 little shorter than the anterior marginals. I'terothorax slightly wider than 

 prothorax and a little wider than long; sides subparallel, slightly con- 

 verging posteriorly. Wings long, closely fringed, not nan-owed at middle; 

 fore wings mar- 

 gined witli a 

 slight shading of 

 brown and with 

 a narrow, me- 

 dian brown bar 

 originatiii^ just 

 beyond the three 

 subbasal spines 

 and becoming 

 obsolescent he- 

 fore apex of 

 wing; subbasal 

 spines set in a 

 narrow, da r k 

 brown, longitu- 

 dinal vitta ; sub- 

 apical fringe i >n 

 posterior mar- 

 gin double for 

 about fourteen 

 hairs; hind 

 w ings clear. 

 Legs not long, a 

 little stouter 

 than usual in 

 t lie genus; fore 

 tarsi unarmed. 



Abdomen large, slightly wider than pterothorax, tapering roundly from 

 segment 6 to base of tube. Tube about .9 as long as head, twice as wide 

 at hase as at apex, tapering evenly for its entire length. Abdominal 

 bristles moderately long, pointed, pale: terminal bristles slightly shorter 

 than tube. 



Measurements. — Length, 2.13 mm.; head: length, .270 mm.; width, 

 .221 mm.; prothorax: length, .180 mm.; width (including coxa';, .40") 

 nun.: pterothorax: width, .465 mm. ; abdomen: width, .510 mm. ; tube: 

 length, .248 nun. ; width at hase, .096 mm.; width at apex, .048 mm. 

 Antennal segments: 1,39m; 2,60/*; 3, 87/*; 4, 78/*; 5,75/*; 6,68/*; 7, 

 63/*; 8, 41m; total, .511 mm.; width at segment I, .041 mm. 



Described from one female, taken in sweepings from grass and weeds 

 at Monterey, .Mexico, July 5, 1908, by Mr. Charles A. Hart. 



The large size, short head, long spines, and the peculiar antennal colora- 

 tion at once distinguish this species from it> allies. 



Fig. 6. — Liothrips varicornis sp. nov. Female, holotype; 

 a, bead and prothorax, x94; 

 6, segments II-IY of right antenna, xl72, 



