150 ^- ^- Girault: 



Two New Mymaridae from Paraguay in the Zoological Museum, 



Berlin. 



1. Ooctonus nigriflagellum new species '). 

 Pemale: Length 1,15 mm. 



Golden yellow and of the babitus of tbe tncolor group in Gonatocerus. Distal 

 two tbirds of abdomen, bind tibiae and tbe flagellum brownisb black. Fore wings 

 witb a ligbt brown stripe across them from the stigmal vein, distad of tbis subbyaline 

 for a sbort distance, tbence lightly embrowued to tip; marginal fringes short, less 

 tban a sixth of tbe greatest wiug width, tbe fore wing siender (about 22 lines of 

 discal cilia). Funicle, sligbtly longer tbau the pedicel; 2 and 3 subequal, longest, 

 one and tbree quarter times longer than wide, 4, 5 and 6 subequal, barely shorter 

 tban three, 8 a little shorter tban 1, a little longer tban wide. Caudal marginal 

 fringes of liind wings distinctly mucb longer tban longest marginal cilia of fore wing. 

 Marginal vein long. Sculpture inconspicuous. Petiole barely longer tban wide. 

 Scape long, conipressed. Mandibles with tbree subequal teeth. True marginal vein 

 no longer tban tbe stigmal. Strigils preseut. Club long. 



Male: Not known. 



Described fi'om one female mounted in xylol-balsam from a minutien mount 

 bearing the labeis „4322. Paraguay. San Bernardino. K. Fiebrig. S. V." 



Habitat: San Bernardino, Paraguay. 



Type: Kat. No. 31961, Zoological Museum, Berlin, the foregoiug specimen. 



Ooctonus Haliday differs from Cosinocomoidea Howard in secoudary sexual 

 cbaracters of tbe male. 



2. Gonatocerus margiscutum new species. 

 Male: Length 0,90 mm. 



Black, the thorax ratber coarsely polygonally reticulated, tbe sides of scutum 

 and caudal margin all conspicuously, tbe bead, meso-caudal angle of parapside, lateral 

 ends of tbe transverse-quadrate sclerite between scutum and scutellum, caudal half 

 of axillae, base of abdomen ratber broadly, lateral margins of scutellum ratber nar- 

 rowly and more or less of thoracic pleura, deep golden yellow. Propodeum also 

 yellow except the meson. Legs mostly golden yellow, tbe bind tibiae black. Antennae 

 black, the scape and pedicel yellowish, the latter darker, very sbort, wider than long; 

 fuuicle joints plainly, longitudinally striato, 1 shorter and stouter tban the otbers 

 which are subequal aud about one and four fifths times longer tban wide; club Joint 

 missing. Wings hyaline, the fore wing wbere widest with about twenty-one lines of 

 discal cilia, the latter absent under the venation; marginal cilia sbort. Hind wings 

 with only a paired row of discal cilia along each margin, their caudal marginal cilia 

 a little longer than the longest fringes of the fore wing. Tibial spurs single, tbe 

 strigil well dev'eloped. 



Female: Not known. 



Described from two males mounted in xylol-balsam from minutien pins bearing 

 tbe labeis „4389. San Bernardino. K. Fiebrig S. Y. IX. 9." 



•) Descriptions made with ^/a-inch objeetive, 1-iüch optic, Bausch aud Loinb. 



