546 PROCEEDINGS OF THE NATT'OUSTtA!, MUSEUM vol. 93 



length of mesoscutellum ; propodeum and metanotum of equal length 

 at meson ; gaster slightly longer than thorax. 



Male. — Length, 0.9 mm. Funicle segments slightly enlarged near 

 bases, and bearing setae slightly longer than segments; pedicel slightly 

 longer than first funicle segment, first and second funicle segments 

 equal in length; club one-fourth longer than pedicel and first funicle 

 segment; gaster and thorax equal in length. 



Type locality. — Chickasha, Old a. 



Types. — U.S.N.M. No. 19067. (Specimens in very poor condition.) 



Host. — Eggs of snout beetle, Compsus aui'icephalus (Say). 



Distribution. — Mississippi, Oklahoma, Texas. 



TETRASTICHUS EUPLECTRI Gahan 



Tetrastich us euplectri Gahan, Proc. U. S. Nat. Mus., vol. 48, p. 167, 1914. — 

 Vickery, Journ. Econ. Ent., vol. 8, p. 391, 1915. 



Body mostly iridescent blue-green ; base and apex of abdomen some- 

 what brown, legs (except coxae) and base of gaster of male white. 



Female. — Length, 1.5 mm. Antennae inserted slightly dorsad of 

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

 level of vertex ; funicle segments long, first one and two-thirds times 

 as long as pedicel, second twice as long as pedicel, third as long as 

 first, club twice as long as first funicle segment; length of malar space 

 one-half height of compound eye ; postocellar line one and two-thirds 

 times as long as ocellocular. Mesopraescutum two-thirds as long as 

 wide and bearing three bristles at each lateral margin ; submarginal 

 vein of forewing with one dorsal bristle; hindwing acute at apex, 

 fringe at posterior margin one-third as wide as wing at hamuli. Pro- 

 podeum shagreened, mesal length slightly less than one-half as great 

 as length of mesoscutellum; propodeum bearing median, paraspiracu- 

 lar, and oblique carinae, as in figure 21, d; propodeal spiracles not 

 quite touching anterior margin ; gaster nearly twice as long as thorax. 



Male. — Length, 1.1 mm. Scape enlarged and bearing a darkened 

 anterior carina one-half as long as scape, first funicle segment equal 

 in length to pedicel, second, third, and fourth equal in length 

 and each one-quarter longer than pedicel, funicle segments enlarged 

 at base and narrowed toward apex, and bearing long setae, club as 

 long as two distal funicle segments ; gaster equal in length to thorax. 



Type locality. — Tallulah, La. 



Types.— U.S.N.M. No. 18338. 



Hosts. — Euplectrus plathypenae Howard, Meteorus sp., primary 

 parasites on the larvae of various Lepidoptera. 



Distribution. — Louisiana, Texas. 



