June. 1904.] ASHMEAD : HyMENOPTERA FROM JaPAN. 77 



basally, tips of hind tibire and their tarsi are fuscous or blackish. Wings hyaline, 

 the veins yellowish. The antenna are 13-jointed, nearly as long as the body, the 

 flagellum very slightly and gradually thickened towards apex, the last joint being 

 nearly as long and as thick as the scape, but hardly as long as the two preceding 

 joints united. Head smooth, polished, except a few wrinkles on the cheeks ; thorax 

 mostly smooth, but with the pronotura, the scutellum and the metathorax rather 

 coarsely rugulose, the scutellum ending in a blunt spine. Abdomen polished black, 

 except beneath towards base, where it is piceous or rufo-testaceous ; the [petiole is 

 short and striated. 



Type. — No. 7136, U. S. National Museum. 



Atami. Described from two female specimens collected by Mr. 

 A. Koebele. 



Subfamily VI, Xystin.e. 



Genus XYSTUS Hartig. 

 Xystus japonicus, new species. 



JMale. — Length, i.l mm. Wing expanse about 3.8 mm. Head yellow, the 

 eyes black ; thorax brownish-yellow, the mesonotum with a median streak and a 

 lateral spot towards each tegula, and the disk of the scutellum dark brown ; abdomen 

 black, beneath and at apex yellowish. Wings hyaline, the venation, except tiie 

 costae basally which are yellowish, light brownish. The antennae are longer than 

 the whole insect, 14-jointed, the basal third yellow, the apical two thirds dusky or 

 brownish, joints 2 and 3 slightly curved, about equal in length and only a little 

 shorter than the first, a little more than four times as long as thick, the joints beyond 

 cylindrical, very imperceptibly shortening to the last, which is only a little more 

 than twice as long as thick. 



Type. — No. 7137, U. S. National Museum. 



Japan. Received from Mr. A. Koebele, labelled No. 1268 and 

 bred from an Aphis. 



Family LIX, CYNIPID^. 



Subfamily I, Synergin.«. 

 Genus SYNERGUS Hartig. 

 Synergus atamiensis, new species. 



f^vKtle. — Length, 3.5 mm. Black, the head and thorax coarsely rugulose, the 

 disk of the mesonotum transversely rugulose, the mesopleurae with longitudinal striae, 

 the scutellum rugulose, with a median impression at apex ; abdomen, except the 

 petiole, smooth and shining ; antenn?e 14-jointed, entirely pale yellowish ; legs, except 

 the coxre, base of front femora and the middle and hind femora which are black or 

 brown-black, flavo-testaceous, the hind tibis, except at base and apex, fuscous; wings 

 hyaline, the veins light brown. 



Type. — No. 7306. U. S. National Museum. 



Atami. Described from two specimens collected by Mr. A. 

 Koebele. 



