OF WASHINGTON, VOLUME XIV, 1912. 137 



der, overreaching the abdomen; fore wings about eighteen times as long as 

 width at middle, of normal venation; costal margin with about 20 bristles; 

 principal vein with four colorless bristles, of which two are near base and 

 two near fork; anterior vein with one bristle near base and two near apex, 

 all slender, the last brownish; posterior vein with six or seven usually 

 equidistant bristles, all long and slender, colorless; fore wings nearly white, 

 with a short, dark band at fork of veins connected with one at apex by 

 a narrow line of brown extending along the extreme posterior margin and 

 hooked foward in apical twelfth (where it is darkest) along anterior margin; 

 hind wings brownish, with darker median vein. 



Abdomen moderately slender, ovate, pointed at tip; notum subreticu- 

 late, more faintly at middle; segment 10 with longitudinal dorsal suture. 



Measurements of holotype: Length 1.08 mm.; head, length 0.126 mm., 

 width 0.156 mm.; prothorax, length 0.120 mm., width 0.206 mm.; meso- 

 thorax, width (3.259 mm.; metathorax, width 0.240 mm.; abdomen, width 

 0.300 mm. Antennal segments: 1, 18 n; 2, 39 n; 3, 48 /x; 4, 44 n; 5, 34 M; 

 6, 27 (i; 7, 18 n; 8, 33 ju; total length of antenna, 0.26 mm.; width at seg- 

 ment 4, 0.023 mm. 



Described from three females taken by Mr. Hart in sweep- 

 ings, at Monterey, Mexico, July 5, 1908. 



This spepies, also, Ts related to the group of which fascialus 

 is typical. The wing coloration is distinctive. 



Heliothrips cinctipennis, new species. 



Female. Length about 1.2 mm. General color yellowish brown to 

 nearly black, with head and thorax much paler than abdomen, the latter 

 with last three segments distinctly paler; legs yellow, with the fore fem- 

 ora at base, and the middle and posterior femora and all tibise, at middle, 

 shaded with brownish; antennae pale, segments 1, 2, and 6-8, nearly con- 

 colorous with body, intermediate segments nearly white, slightly clouded 

 with brown toward apex. 



Head about 1.2 times as wide as long, distinctly longer than prothorax; 

 cheeks subparallel, arcuate; dorsal surface conspicuously reticulate, more 

 coarsely toward base; frontal costa nearly as wide as first antennal seg- 

 ment. Eyes distinctly longer than their distance from posterior margin 

 of head, slightly prominent, setose. Ocelli of normal form and position. 

 Antennae usually a little less than twice as long as head; segment 1 sub- 

 quadrate; 2 broadest in entire antenna, a little longer than wide; 3 and 4 

 urn-shaped, the former slightly more than twice as long as wide; ."> egg- 

 shaped, pedicellate; 6 and 7 together of same form as 5, but inverted; 

 8 very long and slender; segments 1, 2, and 6-8, brown, the first paler; 

 intermediate segments pale brownish yellow, slightly clouded with gr.-iv 

 in apical portion. Maxillary palpi two-segmented. 



Prothorax about 1.9 times as wide as long, distinctly shorter than head 

 and with similar reticulation; bristles few, short, well distributed, a more 

 prominent pair near middle of anterior margin. Pterothorax somewhat 



