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



Synergus gifuensis, new species. 



Female. — Length, 3 mm. Black, the head and thorax rugulose, the disk of the 

 mesoiiotum with fine, transverse rug;^?, the scutellum finely, closely punctate, convexly 

 rounded, without a median impression towards apex ; abdomen smooth and shining, 

 the sheaths of the ovipositor very briefly projecting beyond its tip ; antennae and legs 

 brownish-yellow, the pedicel basally brown, the cox^e and hind femora, except at 

 apex, black, the hind tibre and the basal joint of their tarsi, light brown ; wings hya- 

 line, the veins yellowish. The antennae are long, 14-jointed. 



Type. — No. 7307, U. S. National Museum. 



Gifu. Described from three specimens, labelled No. 43, received 

 from Mr. Y. Nawa. 



Synergus hakonensis, new species. 



Female. — Length, 1.8 mm. Black, the head and thorax finely rugulose, with 

 transverse rugse on the lobes of the mesonotum, the scutellum punctate-rugose, con- 

 vexly rounded, the mesopleura shining but with some longitudinal strice ; abdomen 

 black and shining, the sheaths of the ovipositor not at all projecting ; antennae and 

 legs, except the coxae and femora, pale yellow, the front and middle coxae, middle 

 and hind femora, except at apex, brownish-piceous, the hind coxae black ; wings 

 hyaline, the veins pale yellowish. The antennae are 13-jointed. 



Type. — No. 7307, U. S. National Museum. 



Hakone. Described from a single specimen collected by Mr. 

 A. Koebele. 



Synergus japonicus, Walker. 



Dr. Mitsukuri has sent eight specimens of this species taken, I 

 believe, by Mr. Nawa, at Gifu. 



Genus CEROPTRES Hartig. 

 Ceroptres japonicus, new species. 



Male. — Length, 2 mm. Black, shining, the head and thorax finely pubescent, 

 the head smooth, impunctate ; antenna; and legs brownish yellow, the hind coxce 

 black or dusty, the hind tibia; and tarsi more or less fuscous. Wings hyaline, the 

 veins brownish. The antennae are 13-jointed, cylindrical, the third joint the longest, 

 the fourth only two thirds the length of the third, the following to the last very imper- 

 ceptibly shortening, the last long, nearly as long as the third. 

 Type. — No. 7138, U. S. National Museum. 



Gifu. Described from three male specimens, received from Mr. 

 Y. Nawa, who bred them from a bud-like gall on oak, irregularly 

 rounded, depressed, about 3 mm. in diameter and of a dark brownish- 

 black color. The gall is mounted on card-board, with the wasps, and 

 I cannot tell whether it is a bud-gall, a leaf-gall, or a twig-gall. It 

 may be produced by one of the genuine gall-wasps described below 

 under the genera Neurolerus, Dryoplianta, or Callirhytix. 



