528 PROCEEDINGS OF THE N'ATlONiAL MUSEUM vol. 93 



margin one-fifth as wide as wing at hamuli. Surface of propodeum 

 slightly reticulated, almost smooth, obscure median, paraspiracular 

 and oblique carinae present; spiracles round, almost touching anterior 

 margin of propodeum ; median length of propodeum one-third as 

 great as length of mesoscutellum ; gaster broad, blunt at apex, slightly 

 shorter than thorax; apices of ovipositor sheaths not reaching apex 

 of abdomen. 



Male. — Unknown. 



Type locality. — Snowflake, Ariz. 



Types.— U.S.N.M. No. 5G23G. 



Described from 4 female specimens, one of which is the holotype, 

 reared June 10, 1932, from the pods of locoweed (Astragalus moll'is- 

 simus) by E. E. Russell, under Tempe No. 6882. 



TETRASTICHUS ICHTHYUS, new species 



Head and thorax with relatively large and intense reticulate sculp- 

 turing, and with blue, blue-green, or purplish iridescence, frons 

 strikingly iridescent purple; gaster, coxae, trochanters, and most of 

 femora very dark brown; area of head around mouthparts, pedicel 

 and flagellum of antenna usually, and apical segment of tarsi tan; 

 scape, bases and apices of femora, tibiae, and basal three segments 

 of tarsi light yellow or white; entire antenna may be yellow. 



Female. — Length, 1.5-1.7 mm. Antennae inserted at level of ven- 

 tral margins of compound eyes; apex of scape not reaching level of 

 anterior ocellus; pedicel slightly longer than first funicle segment, 

 first and second segments equal in length, third slightly shorter, club 

 as long as first and second funicle segments combined; length of 

 malar space two-thirds as great as height of compound eye; posto- 

 cellar line twice as long as ocellocular. Mesopraescutum with two 

 or three rather irregular rows of bristles at each lateral margin; 

 submarginal vein of forewing with three or four dorsal bristles, 

 marginal vein two and one-half times as long as stigmal; apex of 

 hindwing blunt, fringe at posterior margin one-fifth as wide as wing 

 at hamuli. Surface of propodeum shagreened, and with strong me- 

 dian, paraspiracular, and oblique carinae, as in figure 21, d; median 

 length of propodeum one-third as great as length of mesoscutellum; 

 spiracles almost touching anterior margin of propodeum; gaster broad 

 and slightly shorter than thorax; apices of ovipositor sheaths not 

 quite reaching apex of abdomen. 



Male. — Length, 1.4 mm. Darkened anterior carina of scape two- 

 thirds as long as scape, pedicel slightly longer than first funicle seg- 

 ment, all four funicle segments of equal length, semiquadrate and 

 without long bristles, club slightly more than twice as long as a funicle 



