no. 1812. NEW ICHNEUMON FLIES— VIERECK. 185 



Received from C. W. Howard by the U. S. Department of Agricul- 

 ture, Bureau of Entomology. 



MICROPLITIS MELIAN.E, new species. 



Male. — Length, 2.5 mm. Related to Microplitis ductus Ashmead, 

 compared with the type of which it differs chiefly as follows: Antennas 

 blackish throughout, tegulas and all coxse black; scutel shining, with 

 ill-defined punctures; first tergal plate nearly twice as wide at base as 

 at apex, parallel sided to beyond the middle and nearly twice as long as 

 wide at base, smooth, sculptureless and shining, remaining segments 

 smooth and shining virtually sculptureless, tergum blackish, the 

 membranous portion of first and second segment rather brownish; 

 hind femora and tibia? not concolorous throughout. 



Type.— Cat. No. 13508, U.S.N.M. 



Type-locality. — Grand River, Iowa. 



"From Meliana albilinea caterpillar of V stage." 



Experiment 342, July 5, 1910, and Experiment 601, September 20, 

 1910; R. L. Webster. 



PLATYSPATHIUS, new genus. 



Apparently related to Spathius from which it may be distinguished 

 as follows: Greatest distance between lowest point on outer eye 

 margin and occipital carinas about one and one-half times the greatest 

 distance between uppermost point of outer eye margin and the occi- 

 pital carina; notauli converging toward the hind third of the mesono- 

 tum, at the beginning of which they terminate, the notauli as far as 

 they go distinct and only half as far from each other where they end 

 as where they begin, fore wings with the median vein strongly bent 

 or curved toward the submedian which it almost touches, subdis- 

 coidal vein interstitial with the median ; first dorsal segment depressed, 

 apparently three times as wide at base as thick dorso-ventrally, 

 approximately half as wide at base as at apex and nearly four times 

 as long down the middle as wide at base, uniformly depressed through- 

 out; second dorsal segment obtrapezoidal, its apical margin indis- 

 tinctly arched back so that this segment is about as long down the 

 middle as wide at base though laterally shorter than wide at base; 

 suture between second and third segments indistinct, third segment 

 shorter down the middle than laterally, gaster (abdomen beyond 

 the petiole or first segment) bulbous. 



Type. — Platy spathius pictipennis, new species. 



PLATYSPATHIUS PICTIPENNIS, new species. 



Female.— Length, 4.5 mm.; sheaths of the ovipositor 2.5 mm. long; 

 mostly dark castaneous, finely sculptured, dullish to shining; anten- 

 nas 26-jointed, rather stramineous except for the 21st to 26th joints 

 which are rather blackish, joints of the flagel subequal, the first a 



