192 I >iiOCEEDING3 OF THE NATIONAL MUSEUM. vol. xxvi. 



shiulino- to lij?ht brown at end; remaining segments dark brown. 

 Sense cones on segments three to six very long and slender; transpar- 

 ent spmes npon each segment also long and slender. 



Prothorax three-fourths as long as head and three fifths as long as 

 wide; fore coxa^ project considerably beyond posterior angles. One 

 medium length spine on each side of middle and near anterior edge, 

 one near each anterior angle, one at middle of each side and one longer 

 one at each posterior angle. Mesothorax equal in width to prothorax 

 and concolorous with it; mesonotum bears one long spine close to base 

 of each fore wing. Metathorax equal in width to mesothorax, nar- 

 rowed but very slightly posteriorly, pale yellow in middle, shaded on 

 sides, splashed with red. Each fore coxa bears a single long spine on 

 outer side; fore femora somewhat enlarged; each femur bears a single 

 long, erect spine on the outer side near its extremity; tarsi short and | 

 thick, fore pair armed with a stout tooth. Femora gray -brown, fore !| 

 pair yellowish brown; fore tibi» and tarsi pale yellow; middle and 1 

 hind tibi?e and tarsi almost white. Wings reaching to tip of abdomen; 

 both pairs equal in size, edges parallel, heavily fringed; fore wrings 

 bearing a costal group of three long slender spines between the fringe : 

 and base of wing. Color of wings clear, transparent, except a slightly ■ 

 clouded band across fore wings at about one-third their length. 



Abdomen broad and heavy; last three seg-ments tapering abruptly;! 

 at sixth segment one and one-sixth times as broad as thorax. Tube 

 two-thirds as long as head and at middle one-seventh as broad as the 

 fourth abdominal segment; terminal spines about as long as tube. A' 

 stout bristle projects anteriorly from each side angle of first segment; 

 each following segment, except tube, bears on each side one spine; 

 these are short upon first segment and increase in length and size pos- 1 

 teriorly. Color brownish yellow in middle, shaded with dark reddish 

 brown on sides; tube bright brownish yellow tipped abruptly with 

 gray -brown. 



Described from one female. 



Male unknown. 



Food 2:)lant, — Grass. 



Habitat. — Amherst, Massachusetts. 



TRICHOTHRIPS BEACHI, new species. 

 Plate VII, fig. 79; Plate VIII, fig. 80. 



Female.— 'Length. 1.81 nmi. (abdominal segments one-third tele- 

 scoped): width of mesothorax 0.18 nun. General color yellow-brown. 



Head as broad as long, rounded in front; cheeks slightly converging 

 behind the middle, set with scattered, small, stout spines borne upon 

 small warts; post-ocular bristles quite long and acute. Eyes sni:ill. 

 finely faceted, rounded; ocelli large, distant, posterior two almost 



