172 PROCEEDINGS OF THE NATIONAL MUSEUM. 



tips; all tarsi pale yellow with brown shading at bases of bladders; 

 apines weak and light colored; hind coxa? large, approximate, and 

 about twice as long as wide. 



At)donien elongated ovoid, about twice as long as wide; width of 

 segments graduall}' increasing up to the fourth, then decreasing grad- 

 ually to tip; greatest width equal to about twice that of head; dark 

 line across segments one to eight irregular, conspicuous only on the 

 lighter specimen; that on segment one curving forward greatly in 

 middle. Surface of abdomen very faintly reticulated, but this is not 

 visil)le on darker specimen; spines on last two segments short and 

 line; color yellowish brown to dark brown, lightest along middle. 



Described from two females. 



Cotyjje.—OAt. No. 6330, U.S.N.M 



Male unknown. 



Food plants. — Taken on grass. 



JIahltat. — Amherst, Massachusetts. 



HELIOTHRIPS FEMORALIS Reuter. 

 Plate V, figg. 55, 56; Plate VI, fig. 57. 



HeHothrips femoralis Reuter, Meddel. af. Societas pro Fauna et Flora Fennica, 



XVII, 1891, p. 166. 

 Ildiothnps cestrl Pergande, Ins. Life, VII, No. 5, 1895, pp. 390-391. 

 IleUothrips femoralis Uzel, Mon. d. ord. Thysanoptera, 1895, p. 170. 

 HeHothrips femoralis Bekgroth, Ann. Soc. Ent. Belgique, XL, 1896, Pt. 2, p. 67. 



Female. — Length 1.3 mm. (1.12 to 1.5 mm.); width of mesothorax 

 about one-fourth the body length. General color dark brown to 3'el- 

 lowish brown, lighter at extremities. Entire surface of body weakly 

 but plainl}' reticulated. 



Head two-thirds as long as broad, widest in front; anterior margin 

 depressed at insertion of antenna; vertex carinated; bases of antennas 

 separated by a prominence as high and nearly as wide as the first 

 antennal segment; two transverse wrinkles near back of head more 

 prominent than the others; behind the anterior one of these two the 

 longitudinal parts of the reticulations become very faint; spines upon 

 head .scattering and small. Eyes quite large, protruding anteriorly, 

 coarsely granulated; eyes and margins of ocelli bright, dark red by 

 reflected light; ocelli placed on sides and front of a distinct elevation 

 on top of head between eyes. Head light brown with light ^^ellowish 

 longitudinal stripe on each side between eye and ocelli. Maxillary 

 palpi three segmented, short, small; labial palpi minute. Antenna 

 eight segmented, slender, nearly three times as long as head; relative 

 lengths of segments as follows: 



1 ^ _3_ ^ 5 6 7 8 



5 8.8 16.6 12.2 11 S.i) 4.3 10.5 



Segment one cylindrical, three-fourths as broad as two, which is 



