>86 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.48. 



GENIOCERUS MARCOVITCHI, new species. 



Female. — Length about 2 mm. Blue-black or greenish-black; 

 joints of the funicle elongate (fig. 11) ; under high power the antennae 

 show three ring joints; mesoscutum and scutellum finely longitudi- 



— r v- — -v^ «^ r — . nally sericeous, median furrow on 



<C j_ \ y L^JL^Jl w^^ mesoscutum indistinct; metano- 



s^^^' turn with two yellow spots on disk; 



C^"" propodeum with median carina 



fig. ii.— geniocerus marcovitchi. female short, hardly as long as the meta- 



antenna. no turn; submarginal vein with 



three or four bristles; legs blue-black, the knees, extreme bases and 



apices of tibiae and tarsi except apical joint whitish. 



Allotype. — Length, 1.75 mm. Similar to the female, the first 

 joint of the funicle about as long as pedicel, much shorter than the 

 second joint, joints 2 to 4 being subequal in length, club not enlarged, 

 almost twice as long as last joint of funicle; tibiae yellowish- white 

 with a brown stripe inwardly. 

 Habitat. — Ithaca, New York. 

 Type.— Cat. No. 18382, U.S.N.M. 



Described from three females and one male reared from berries of 

 Juniperus virginiana by Mr. Marcovitch and sent under his number 

 lot 30, sub 17. It appears to be a parasite of the phytophagous 

 Eurytoma living in these berries. 



GONATOCERUS GIBSONI, new species. 



Female. — Length about 1 mm.; sheaths of ovipostor about 0.33 

 mm. Very dark brown, base of abdomen narrowly light yellow; 

 antennae slightly longer than insect, brown, the scape much lighter; 

 first joint of funicle about as long as pedicel, second and third joints 

 longer, subequal, fourth very slightly longer, fifth, sixth, and seventh 

 longer than fourth, subequal, eighth shorter, about as long as first; 

 club about twice as long as fifth joint, coxae and trochanters yellow, 

 femora and tibiae, except yellow apices, light brown; sheaths of 

 ovipositor brown, almost as long as abdomen; wings very slightly 

 fumated; abdomen strongly compressed. 



Allotype. — Length about 1 mm. Similar to the female except in 

 secondary sexual characters, the antennae much longer than the 

 body, joints of funicle almost equal in length, the first slightly shorter, 

 the thirteenth somewhat longer than preceding. 



Type-locality. — Tempe, Arizona. 



Host. — Eggs of DracculocepJiala mollipes. 



Described from specimens bred May 20, 1914, by Mr. E. H. Gibson 

 and recorded under Webster No. 12211 sub A, the types on slides in 

 balsam. 



Type.— Cat. No. 18495, U.S.N.M. 



Allied to G. rivalis Girault and maga Girault but the female differs 

 from both in the fourth joint of the funicle not being shorter than 

 preceding, in the more elongate antennae, and the longer ovipositor. 



