ART. 28 CHALCID FLIES N^ORTH OF MEXICO — BALDUF * 19 



* * * broader than mesonotum. greenish yellow, with a slightly 

 darker transverse band of brown in center; mesonotum, scutellum 

 and metathorax dark reddish brown * * *; abdomen smooth, 

 shining black or brownish black, more or less of a reddish brown an- 

 teriorly, peduncle two-thirds as long as abdomen, black; * * * 

 stigma black, with a brownish black blotch extending from it to more 

 than half way across the wings; legs, anterior pair greenish yellow, 

 middle tibiae inf uscated, posterior tibiae brownish black, tarsi black." 

 It is not laiown how many specimens were used in preparing this 

 description, but presumably they were few. If this species should 

 prove to be variable in color, as is common in the genus Decatoma, 

 entire agreement with this description can not be expected even 

 should new specimens become available. 



4. DECATOMA LANAE Ashmead 



Plate 1, Figuke 3 ; Plate 3, Figxjee 32 ; Plate 4, Figure 38 

 Decatoma Janae Ashmeiad. Can. Ent., vol. 13, no. 6. p. 135, June, 1881. 



Similar to D. vacciniicola Balduf in being mostly yellow, but the 

 female differs in having F2 to F5 as broad as long, and the male with 

 the funiculars only about one-third longer than thick; anterior half 

 of scutel black, abdomen infuscated above, the submarginal band 

 shorter, more narrow, margins less entire, and its apex distinctly 

 curved toward base of the wing. 



Female. — Length 2.2 to 2.5 mm., mostly yellow and light orange; 

 antennae honey yellow, base of pedicel brown above; head dull yel- 

 low; mandibles, ocellar area in part, and occiput dark; pronotum 

 concolorous with yellov/ of head, rest of thorax and the propodeum 

 light orange, except front of scutellar disk, sterna, metanotum 

 mostly, and middle half of propodeum on anterior third and groove, 

 almost black; legs yellow, only hind tibiae brownish black; submar- 

 ginal band medium brown, embracing only base of stigmal vein, 

 mostly narrower than length of stigma, its margins somewhat irregu- 

 lar, its proximal edge concave, apical side more convex and some- 

 times with a heellike mesal prominence, apex bluntly pointed, reach- 

 ing slightly beyond middle of wing, secondary band lacking on all 

 specimens at hand; peduncle in part black, abdomen light brown, 

 dorsum infuscated. 



Head almost two-thirds as long as wide, eyes not prominent, their 

 juncture with face only feebly interrupted; face strigose-punctate, 

 cheeks and malar space obscurely punctate or smooth, and ocellar 

 area and sometimes adjoining part of vortex minutely punctate; 

 scape almost thrice as long as pedicel, Fl one-third longer than wide, 

 F2 to Fo each not longer than broad, or slightly shorter than wide, 

 each succeeding joint slightly wider than the preceding, antennae 

 more densely hairy than head and thorax, hairs not conspicuous; 



