596 PROCEEDINGS OF THE NAtflONAlL MUSEUM vol. 93 



Female. — Length, 1.2-1.4 mm. Antennae inserted at level of ventral 

 margins of compound eyes; apex of scape almost reaching level of 

 anterior ocellus ; pedicel and first f unicle segment equal in length, sec- 

 ond segment slightly shorter than first, third funicle segment as long 

 as first ; club as long as second and third funicle segments combined ; 

 length of malar space slightly less than one-half height of compound 

 eye; postocellar line twice as long as ocellocular. Mesopraescutum 

 slightly wider than long and bearing one row of bristles at each lateral 

 margin, median groove well defined; submarginal vein of forewing 

 with from three to five dorsal bristles ; apex of hindwing blunt, width 

 of fringe at posterior margin one-fourth as great as width of wing at 

 hamuli. Surface of propodeum smooth, paraspiracular carinae want- 

 ing, median carina vague ; mesal length of propodeum one-fifth length 

 of mesoscutellum ; propodeal spiracles contiguous with anterior mar- 

 gin; gaster globose (flattened in dry specimens), its length one-third 

 greater than that of thorax. 



Male. — Length, 1.0 mm. Abdomen slightly lighter in color at base. 

 Pedicel of antenna globular, twice as long as first funicle segment, sec- 

 ond to fourth funicle segments equal in length and each one-fifth longer 

 than pedicel, funicle segments enlarged near bases, and bearing long 

 setae on these enlargements; club as long as three apical funicle seg- 

 ments ; apex of scape reaching level of dorsal margin of anterior ocel- 

 lus ; gaster equal in length to thorax. 



Type locality. — Jacksonville, Fla. 



Types.— U.S.N.M. No. 25954. 



Host. — Callirhytis blastophaga (Ashmead), the staminate flower 

 gall of Quercus cinerea. 



Distribution. — District of Columbia, Florida. 



TETRASTICHUS LASIUS, new name 



Tetrastichodes lasiopterae Ashmead, Journ. Cincinnati Soc. Nat. Hist., vol 17 r 

 p. 54, 1894. — Dalla Torre, Catalogus hymenopterorum, vol. 5, p. 1898. [Not 

 Tetrastichus (Ocniocerus) lasiopterae (Lindemann) Dalla Torre.] 



Almost completely brown ; area of head around mouth parts, median 

 area of postscutellum, and legs almost white; femora and tibiae slightly 

 darkened. 



Apex of scape reaching level of anterior ocellus ; all funicle segments 

 equal in length ; mesopraescutum with one row of bristles at each lat- 

 eral margin; submarginal vein of forewing with four or five dorsal 

 bristles ; apex of hindwing blunt ; propodeum almost smooth, minutely 

 roughened ; median carina only present, spiracles contiguous with an- 

 terior margin of propodeum. 



Male antenna bearing conspicuously long bristles on elevations near 

 bases of funicle segments. 



