INSECUTOR INSCITI^ MENSTRUUS 19 



times as long as wide; 7 and 8 small, cylindrical, 8 slightly 

 longer and narrower than 7. 



Prothorax about equal in length to head and about 1.6 times 

 as wide as long (this greater width may be due in part to the 

 pressure of the cover glass), sides and posterior margin 

 rounded, anterior margin straight ; pronotum with a few 

 anastomozing lines along anterior margin and with the ex- 

 treme posterior portion slightly rugose ; bristles long, nearly 

 black, of the same number and arrangement as in F. annulipes 

 (PI. II, fig. 3), but more slender and shorter, the anterior 

 margnial pair noticeably shorter and more slender than the 

 anterior angular. Wings of fore pair almost clear in basal 

 third, brownish gray beyond, becoming paler toward apex, 

 nearly thirteen times as long as width at middle, set with long, 

 heavy, nearly equidistant, black bristles, of which there are 

 about 27 on the costa, 20 on the anterior vein, and 16 on the 

 posterior vein. 



Abdomen broader than pterothorax ; tergite of segment 1 

 with oblique, anastomozing striae, other segments with indis- 

 tinct striae at sides ; segment 10 at least partially divided above ; 

 abdominal bristles long, stout, black. 



Measurements : Length 1.36 mm. ; head, length 0.148 mm., 

 width 0.180 mm.; prothorax, length 0.144 mm., width 0.228 

 mm. ; pterothorax, width 0.348 mm. ; fore wing, length 0.856 

 mm., width at base 0.097 mm., at middle 0.069 mm. ; abdomen, 

 width 0.288 mm. 



Antennal segments 12345678 



Length (\i) 31 45 69 60 47 56 12 17 



Width (jx) 34 28 22 21 19 20 8 6 



Total length of antenna, 0.337 mm. 



Described from three females taken by Mr. E. W. Rust at 

 Lima, Peru, January 13, 1913, from "Jerusalem cherry." 



Allied to F. insularis and F. annulipes, but easily distin- 

 guished by the color of the legs. 



Frankliniella williamsi, new species. (PI. II, figs. 4 and 5.) 



Female (macropterous). — Length about 1.1 mm. Color 



nearly uniform pale yellow, with thorax, outer surface of l^s, 



