138 PROCEEDINGS OF THE NATIONAL MUSEUM. 



First ,seo-nient imicli coinpvesscd longitudinally; transverse diameter 

 more than twice its length; two very strongly drawn out externally 

 into a stout, conical elongation; segments three, four, and five rounded; 

 three with a quite long peduncle; three and four each bear one stout, 

 transparent sense cone upon outer angle. Color of one and two clear 

 pale yellow; three to six becoming gradually more brownish; six to 

 eight uniforndy chestnut brown. 



IVothorax one and one-third times as long as the head; anterior edge 

 but slightly wider tiian hind edge of head; sides slightly concave, 

 divergent so that width at posterior edge is more than twice that at 

 anterior edge; hind angles acute, without long spines; sides quite 

 deeply indented above fore coxae. Sides of mesothorax rounded, con- 

 verging anteriorly; metathorax narrower than mesothorax, its sides 

 also rounded but converging posteriorly. Color of thorax light yel- 

 lowish brown, sometimes splashed with red. Fore legs very short and 

 extremely thickened; other legs short, l)ut not thickened. Legs pale 

 yellow, middle and hind tibise slightlv brownish on upper side, 1)asal 

 part of fore femora shading to light brown. Wings long, sabre- 

 formed, overreaching tip of abdomen, shaded with gray. Two long 

 veins, the hind one branching from the fore at about one-third the 

 length of the wing; ])oth veins disappear before reaching the apex. 

 Each vein l)ears four to six spines; basal third of wings unfringed; 

 fore fringe sparse, long and slender. 



Abdomen ovoid, acuminate at apex, broadly attached to metathorax, 

 one and twH)-thirds times as long as broad. Spines upon last two seg- 

 ments xery short and weak, and those upon ventral plates weak and 

 inconspicuous. Ovipositor very short and weak, apparently not func- 

 tional; t(Mith segment split open above. Color of abdomen uniformly 

 clear pale yellow, except apex brownish and posterior edges of seg- 

 ments faintly brownish, receptaculum seminis over base of ovipositor 

 bright reddish orange. 



Described from three specmiens. 



Cotype.— Cat No. 6825, U.S.N.M. 



Male unknown. 



I^ood i>^((nts. — Fcstuca ovina^ Poa pratenah. 



Habitat. — Amherst, Massachusetts. 



Genus LIMOTHRIPS Haliday. 



Body powerful. Head longer than wide, broadened behind, and in 

 front of the eyes extending into a triangular projection upon which 

 the antennje are borne. Ocelli present in females, but wanting in 

 males. Antennae eight segmented; third segment drawn out into a 

 blunt, triangular process at outer angle. Maxillary palpi two seg- 

 mented (Z. cereaUum three?). Prothorax somewhat shorter than 

 the head, slightly broadened at hind edge; hind angles provided with 



