70 Journal New York Entomological Society. [Voi, xii. 



Family LV, CERAPHRONID^. 

 Subfamily I, Megaspilin^. 

 Genus L"^GOCERUS Forster. 

 Lygocerus japonicus, new species. 



Female. — Length, 2 mm, Black, the head and thorax above, alutaceous, sub- 

 opaque, the sides of the thorax highly polished, shining; antennse 1 1 jointed black, 

 the scape long, about half the length of the flagellum, the pedicel obconical, the first 

 joint of the flagellum long, cylindrical, about four times as long as thick at apex, or 

 a little longer, the second joint about half as long as the first and a little shorter than 

 the third, joints 3-8 nearly equal in length, about twice as long as thick, the last 

 fusiform ; legs reddish-brown, the trochanters, knees, front tibiae and tarsi, and middle 

 tibise beneath and their tarsi, yellowish. Wings hyaline, the stigma and veins red- 

 dish-brown. 



Type. — No. 7118, U. S. National Museum. 



Atami. Described from two specimens labelled No. 12S7, bred 

 by Mr. A. Koebele from an Aphis, Lachnus sp., found on Pine. 



Lygocerus koebelei, new species. 



Female — Length, 1.5 mm. Very similar to L. japonicus, but smaller, the 

 sutures of the trochanters, knees, front tibiee and tarsi, and the extreme tips of middle 

 and hind tibiae, pale yellowish ; the flagellum is very slightly thickened toward apex, 

 the first joint not more than thrice as long as thick, a little longer than the second, 

 the latter being a little longer than the third, while the joints beyond to the last are 

 only about one and one half times as long as thick. 



Male. — Differs from the female in having the scape of the antennre, except the 

 extreme apex, and the legs brownish-yellow, the flagellum being much longer, pilose, 

 with the joints 1-4 excised at apex, appearing when viewed from side, as if dentate. 

 Type. — No. 71 19, U. S. National Museum. 



Atami. Described from 4 9 and 2 $ specimens bred by Mr. A. 

 Koebele from an unknown Aphis. 



Genus DENDROCERUS Ratzeburg. 

 Dendrocerus ratzeburgi, new species. (Plate VII, Fig. i.) 



Male. — Length, 1. 5 mm. Black ; legs, except the middle femora and the hind 

 legs, brownish-yellow, the middle femora brownish, the hind legs, except trochan- 

 ters, knees and tibial spurs, which are yellowish, black. Antennae black, with the 

 flagellar joints I to 5 each with a long, filiform or thread-like pubescent branch, the 

 first three or four being nearly twice as long as the scape ; the first joint of the flagel- 

 lum is only a little longer than thick, the following to the sixth increasing in length, 

 joints 7 to last thickened, three or more times longer than thick. Wings hyaline, the 

 stigma and veins brown. 



Female. — Length, 1.8 mm. Black ; legs wholly brown, except the articulations 

 which are yellowish ; antenna; as long as the body, black except the scape at the 



