AET. 28 CHALCID FLIES NORTH OF MEXICO BALDUF 35 



including radicle) as long as pedicel, Fl, F2, and half of F3 com- 

 bined, Fl four-fifths as long as pedicel and a fourth longer than F2 

 to F5, the latter segments each almost or quite as broad as long, 

 sometimes distinctly but not greatly longer than thick; pronotum 

 almost two-thirds as long as wide, slightly narrower than head and 

 mesothorax, thorax above coarsely umbilicately punctate, mesopleura 

 aciculate and minutely punctate; hairs on apex of wing about one- 

 half as long as bristles on marginal vein, submarginal vein bearing 

 a row of 12 to 16, more often 12, setae ; abdomen bare, except a few 

 hairs on third and fourth segments, last segment before ovipositor 

 somewhat hairy, very smooth, polished, shiny, fourth and fifth seg- 

 ments very finely and densely granulose, the sculpture sometimes 

 scarcely distinguishable, hairy parts punctate. 



Male. — Differs from the female only in the usual different form of 

 the abdomen, in having the submarginal band more frequently re- 

 duced distad, and in the proportions of the antennal joints; pedicel 

 and Fl equal in length or Fl slightly longer, Fl two and a half times 

 as long as maximum width and as broad as F2 to F4, the latter equal 

 in length and width and each almost or quite two-thirds longer than 

 thick, club scarcely longer than F3 and F4 combined and as broad as 

 the funicular segments. 



Type locality. — None given, but probably Rockford, 111. 



Cotypes. — Two females on one pin, and fragments of a third 

 separately mounted, U. S. N. M. No. 1538. 



These specimens were received by the National Museum in 1890 

 through A. Bolter, who was entomological curator in the museum of 

 the Chicago Academy of Sciences, where the collection prepared by 

 Doctor Walsh was deposited after his death. 



Remarks. — The specimens from which Walsh described varians 

 were reared by him from cynipid galls on oak. Kinsey interprets the 

 original records as Plagiotrochus punctatv.s (Bassett), AinphihoUps 

 inanis (Osten Sacken), and A. con-fiitentus form spongifica (Osten 

 Sacken). A few specimens in the collection still bear notes in pencil 

 showing that they were obtained from P. punctatus. I find none of 

 Walsh's specimens with data to show that they were reared 

 from Amphiholips spp. The National Museum collection also con- 

 tains the following: 7 specimens of both sexes on one pin that are 

 typical varians and bear Accession No. 5961a, A. D. Hopkins, West 

 Virginia; a fine series of 19 females and 6 males from New Jersey, 

 but without further data; 4 males bear record number 2972*^-' with 

 dates February 10, 1882, February 10 and 24 and March 1, 1883, and 

 were reared from a cynipid gall on scrub oak at Martinez, Calif., 

 by H. W. Turner (Doctor Kinsey interprets "scrub oak" there as 

 usually Quereus dumosa) ; 3 females on one pin bear number 149°, 

 which I take to be equivalent to 149k, and are from El Dorado, Calif. 



