1913] Hood — .1 Collection of Thysanoptera from Panama 121 



Abdomen large, wider than pterolhorax, tapering roundly from segment 6 to 

 base of tube. Tube about .8 as long as head, 1 wire as wide at base as at apex, 

 tapering evenly. Abdominal bristles moderately long, black, nearly all blunt; 

 terminal bristles slightly shorter than tube. 



Measurements of holotype: Length 2.2 mm.; head, length .330 mm., width .228 

 mm.; prothorax, length .185 mm., width (inclusive of cox a? J .4.51 mm.; pterothorax, 

 width .504 mm.; abdomen, width .600 mm.; tube, length .276 mm., width at base 

 .114 mm., at apex .054 mm. Anlennal segments: 1, 48/x; 2, 60/*; 3, 99/*; 4, 84/*; 

 5, 81/z; 6, 72/i; 7, 63/z; 8, SG/jl; total length of antenna, .54 mm.; width at segment 

 4, .046 mm. 



Male: Smaller and slenderer than female; otherwise nearly identical. 



Measurements of allotype: Length 1.92 mm.; head, length .288 mm., width .204 

 mm.; prothorax, length .138 mm., width (inclusive of coxae) .388 mm.; ptero- 

 thorax, width .408 mm.; abdomen, width .408 mm.; tube, length .252mm., width 

 at base .087 mm., at apex .045 mm. Antennal segments: 1, 45/x; 2, 54/z; 3, 87/*; 

 4, 78/x; 5, 73/i; 6, 67/x; 7, 58/x; 8, 31/i; total length of antenna, .49 mm.; width 

 at segment 4, .039 mm. 



Described from two females and one male taken by Mr. James 

 Zetek in January, 1912, in sweepings, Miraflores, Canal Zone, 

 Panama. 



The antennal coloration and general structure allies this species 

 closely to raricornis Hood, described from Mexico. It differs con- 

 spicuously, however, in the much longer head, shorter antennae, 

 and the truncate postocular and prothoracic bristles. I take 

 pleasure in naming it for its collector, an enthusiastic, energetic 

 entomologist and a friend of many years. 



Leptothrips aspersus Hinds. 



Distribution: United States: Amherst, Mass., (Hinds); Orlando, 

 Fla. (Back); Southern California (Crawford); Highspire, Pa.; 

 Cabin John and Plummer's Island, Md. (near Washington, D. 

 C.) ; Washington, D. C; Bloomington, Ind.; Bosky dell, (near 

 Carbondale), Carbondale, Cobden, Dubois, Duqoin, Grand Tower, 

 Havan, Hillery (ne.ir Danville), Makanda, Metropolis, Mnncie, 

 Murphosboro, Odlin, Parker, Pulaski, St. Joseph, Tennessee, 

 Urbana, and White Heath, all in Illinois; Wittenburg, Mo.; 

 Brownsville, Texas. Mexico: Gualalajaia (Crawford), Mata- 

 moros, Monterey, and Topo Chico (near Monterey). West 

 Indies: Barbados (Franklin). Panama: Miraflores, ('anal Zone. 



Throughout its range this species varies but little except in 

 size, though the Panama specimens differ almost constantly in 



