188 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 5C. 



the scutelium suffused with dark brown or blackish toward the base; 

 nner half of tegulae white, outer half blackish; the propodeum and 

 metanotum blackish brown, the abdomen entirely black. Scape 

 concolorous with the base, pedicel a little darker, the funicle rather 

 dark brown and the club still darker. Legs ochraceous orange, the 

 front tibiae and tarsi rather dark brown, the hind tibiae and rest of 

 tarsi brownish black, except that the first joint of the middle tarsi 

 is somewhat yellowish; the middle tibiae somewhat brownish above 

 and at the apex, the spur pale j'ellowish. Wings with a roundish 

 spot beneath the stigmal vein, not extending over halfway across the 

 disk. 



Male. —Not known. 



Redescribed from one female (type), Ottawa, Quebec (W. H. 

 Harrington); one female (cotype of Encyrtus puncticeps Howard), 

 Arlington, Virginia, September, 1881 (L. O. Howard) ; and one female 

 captured at flowers of Polygonum, Melrose Highlands, Massachusetts, 

 Septembers, 1909 (P. H. Timberlake). 



Type.— C&t. No. 4748, U.S.N.M. 



7. ISODROMUS PUNCTICEPS (Howard). 



Plate 41, fig. 18. 



Encyrtus puncticeps Howard, Bull. 5 (Old Series), Bur. Ent., U. S. Dept. Agric, 



1885, p. 14. 

 Isodromus puncticeps Ashmead, Proc. U. S. Nat. Mus., vol. 22, 1900, p. 379. 

 Aphycus chrysopae Ashmead, Entom. Amer., vol. 4, 1888, p. 15. 

 Isodromus chrysopae Howard, Proc. U. S. Nat. Mus., vol. 21, 1898, p. 240. 



Female. — Head a little longer than wide, about as thick as in 

 niger; the dorsal surface considerably shorter than the facial surface 

 in side view, their planes meeting in an angle of somewhat more than 

 90°, the dorsal aspect moderately convex or about as in atriventris; 

 the frontovertex rather narrow, about three times as long as wide, the 

 ocelli in a somewhat more acute angle than that of an equilateral 

 triangle, the posterior pair close to the eye margins, the anterior one 

 considerably behind the center of the frontovertex, the dorsal orbits 

 of eyes subparallel; antennal sockets situated about one and a half 

 times their own length apart, their inner rims about parallel; the 

 scrobes long, distinct, and reaching well upward between the eyes. 

 Antennae shorter than in atriventris, the scape considerably shorter 

 than the eyes, and reaching but little beyond the plane of the fronto- 

 vertex, subcylindrical, a little thicker at the middle, slightly curved 

 but hardly furrovv'ed at apex beneath; pedicel about equal to the first 

 two together with one-half of the third funicle joint; funicle joints 

 nearly equal in length, the first one slightly longer than thick, the 

 following increasingly wider, the sixth considerabl}^ wider than long 



