162 Journal New York Entomological Society. [Voi. xn. 



black ; antenna, legs and abdomen beneath yellowish-white ; wings hyaline, the 

 veins pale yellowish. 



Type. — No. 7203, U. S. National Museum. 

 Atami (Mr. A. Koebele). Two specimens. 



Subfamily III, TETRASTiCHiNit. 

 Tribe II, Tetrastrichini. 

 Genus TETRASTICHODES Ashmead. 

 Tetrastichodes pallidipes, new species. 



9. Length, 1.6 mm. Bluish-reneous, the middle mesothoracic lobe with a de- 

 cided metallic greenish tinge, smooth and shining ; a large rounded spot on disk of 

 abdomen, the scape of the antennae and the legs, pale yellowish or yellowish-white ; 

 flagellum brown ; wings hyaline, iridescent, the veins pale ; abdomen conic-ovate, 

 fully as long as the head and thorax united. 



$. Length, 0.8 mm. ^Eneous black, the flagellum longer, light brown, 

 clothed with some long sparse hairs, the legs waxy white. 



Type. — No. 7204, U. S. National Museum. 

 Hakone (Mr. A. Koebele). 



Genus TETRASTICHUS Haliday. 

 Tetrastichus hakonensis, new species. 



9. Length, 1. 5 mm. Robust, aeneous black, impunctate ; flagellum dark 

 brown, the first joint about thrice as long as thick, the others gradually becoming 

 shorter ; legs black, with the trochanters at apex, apices of the femora and all tibiae 

 and tarsi pale yellowish ; wings hyaline, the veins pale. 



Type. — No. 7205, U. S. National Museum. 

 Hakone (Mr. A. Koebele). 



Tetrastichus atamiensis, new species. 



9 . Length, l mm. Black with a faint bluish tinge in certain lights ; scape of 

 antennae and the legs, except as noted, yellowish-white, coxee, a spot on the trochan- 

 ters and the hind femora, on the basal half, black ; abdomen ovate, not longer than 

 the thorax ; wings hyaline, the veins pale yellowish. 



Type. — No. 7206, U. S. National Museum. 

 Atami (Mr. A. Koebele). 



Tetrastichus tricolor, new species. 



9 . Length, 1.8-2 mm. Brownish -yellow, the occiput and a spot on the lateral 

 mesothoracic lobes posteriorly black, a large spot on the middle mesothoracic lobe 

 blue-black ; abdomen except a streak along the middle of the venter, aeneous black ; 

 flagellum brownish ; wings hyaline, the veins pale. 



Type. — No. 7207, U. S. National Museum. 



Atami and Hakone (Mr. A. Koebele). Many specimens. 



