20 • PROCEEDINGS OF THE NATIONAL MUSEUM vol. 79 



prothoiax only slightly narrower than head and mesothorax, these 

 segments umbilicately punctate above, mesopleura aciculate and 

 finely punctate ; a row of about 12 setae on submarginal vein ; abdo- 

 men more or less finely granulosa. 



Male. — Similar to the female, but with the first flagellar joint twice 

 as long as broad, as long as pedicel; second, third, and fourth flagellar 

 joints all longer than broad but shorter than the first ; abdominal peti- 

 ole longer than hind coxae ; vertex except narrow line at eye margin 

 and broad transverse stripe behind, occiput, large quadrate spot on 

 pronotum dorsally, prescutum, median posterior angles of scapulae, 

 scutelium dorsally, propodeum dorsally, metasternum, large spot on 

 inner face of hind coxae, inner side of hind femora in part, hind 

 tibiae on outer side except at base, front femora in part, and petiole 

 of abdomen above and below but not laterally, black. Abdomen 

 beyond the petiole piceous. 



Tyye locality. — Jacksonville, Fla. 



Cotypes. — Nine females and two males, TJ.S.N.M. No. 2818. 



Remarks. — One of the females on a point, and two dissected on 

 slides, are retained in the writer's collection. All are labeled " Jack- 

 sonville, Fla.. Collection Ashmead." This species was originally 

 described from numerous specimens of both sexes reared by Doctor 

 Ashmead from the woolly gall of the cynipid Andricus tumerii 

 (Ashmead) {Cyni'ps q.-turneni Aslimead) on Quercus aquatica., 

 Jacksonville, Fla. I find also in the collection of the National Mu- 

 seum three females from Duval County, Fla., one female labeled 

 '■■ E. Fla., Ashmead." and seven females without data. 



5. DECATOMA AMSTERDAMENSIS Girault 



Plate 1, P"'iguke 4 



Decatoma amsterdamensis, Giiiaui.t. Descriptiones stelliiium iiovaTum, p. 10, 

 1917. 



Similar to ;^ava Ashmead; has occiput, anterior dorsal portion 

 (the part telescoped into the prothorax), lower part of axillae, meta- 

 notum mostly, anterior third and groove of propodeum, sterna of 

 thorax, top of abdominal segments in part, black contrasting sharply 

 with the yellow ; middle and hind tibiae brown ; abdomen yellowish 

 brown on the sides and submarginal band more faint; head, thorax, 

 and legs otherwise one shade of lemon yellow. 



Feinxile. — Length, 2.4 mm., relatively more slender than most spe- 

 cies, colors predominantly yellow with scattered patches of black: 

 head deep lemon yellow, mandibles brown, ocelli bordered or partly 

 to entirely inclosed with small black blotches, occiput narrowly black ; 

 scape light yellow, basal third of pedicel brown, rest yellowish, 



