452 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.55. 



Antennae: Flagellum with pedicel shorter than head and thorax 

 combined. Scape as seen in lateral profile about the same width 

 througiiout and is broader than the first flagellar joint; near distal 

 extremity there is a distinct shoulder; four times as long as broad 

 exclusive of base. 



Redescribed from many females and males reared in cages under 

 artificial conditions and from specimens reared from wheat stubble 

 collected in the field in the States of Missouri, Illinois, Indiana, Ohio, 

 Michigan, New York, Pennsylvania, Maryland, Kentucky, Tennessee, 

 Virginia, and West Virginia, and from the types in the United States 

 National Museum. 



This species makes conspicious hardened enlargements or galls in 

 wheat stems, usually about the second or third internode from the 

 base of the plant, though they may occur at every internode. It 

 breeds only in wheat and has proven to be arrhenotokous under con- 

 trol conditions, though both sexes regularly occur in nature. 



HARMOLITA EORDEI Harris. 



Plate 41, fig. 5 ; plate 44, fig. 6 ; plate 46, fig. 8 ; plate 48, fig. 7. 



Ichneumon horclci Harris, New England Farmer, vol. 9, p. 2, July 23, 



1830. 

 Eurytoma fulvipes Fitch, 7th Rept. Ins. N. Y. (sep. ed.), p. 154, 1862. 

 Eurytonia flavipes Fitch, 7th Rept. Ins. N. Y., p. 159, 162, 1862. 

 Isosoma hordei Walsh, Amer. Ent., vol. 2, p. 330, Oct., 1870. 

 Isosoina hordei (Harris) Howard, U. S. Dept. Agr., Div. Ent.. Bull. 



tech. ser. No. 2, p. 18, 1896. 



Female. — Praescutum rugulose. Pronotal spots minute, not visible 

 from above ; frequently there is only a trace. 



Propodeum without a distinct groove, though there is frequently a 

 slight depression down the center and there is often a median longi- 

 tudinal carina. 



Abdomen is distinctly longer than head and thorax combined; seg- 

 ment 2 a little over one-fifth the length of the abdomen, exclusive of 

 one; 3 the shortest, 5 longest; 4, 6, and 7 subequal. 



Legs a translucent reddish-brown, though occasionally specimens 

 may have all the legs dusky, the tibiae being testaceous. 



Antennae: First funicle plus ring- joint only slightly longer than 

 pedicel; all joints longer than broad; club slightly broader than 

 funicle ; scape brownish, flagellum black. 



Species medium to large in size. 



Male (pi. 48, fig. 7). — Praescutum as in female. Pronotal spots 

 minute, not visible from above. 



Propodeum rugose, without a groove. 



Petiole about one-half the length of hind coxae; rugose to granu- 

 lose. 



