DESCRIPTIONS OF ONE NEW FAMILY, EIGHT NEW 

 GENERA, AND THIRTY-THREE NEW SPECIES OF 

 ICHNEUMON-FLIES. 



By H. L. ViERECK, 



Of the Bureau of Entomology, United States Department of Agriculture. 



This paper is based chiefly upon material sent for determination to 

 the Bureau of Entomology, United States Department of Agriculture, 

 by economic entomologists. Many of the species treated are likely 

 to become of economic importance. 



MYERSIID^, new family. 



Related to the Agriotypidae, from which it differs especially in the 

 Ichneumonid habitus, in the propodeum having a superior and pos- 

 terior face, in the first abdominal segment not bemg cylindrical, with 

 the spiracles near the base or before the middle, but depressed, with 

 the spiracles beyond the middle and with an apicaUy dilated post- 

 petiole, and in the character of the abdomen proper, which recalls the 

 corresponding part in the Figitidse on account of the second and third 

 dorsal segments, constituting most of the abdomen beyond the first 

 segment, the fused second and third dorsal segments overlapping on 

 the ventral surface of the abdomen. Females whiged with a scutel 

 or wmgless without a scutel. This family is erected for the reception 

 of the following new genera and species : 



MYERSIA, new genus. 



Type of the genus. — Myersia laminata, new species. 



Head approximately as long as wide as seen from in front, twice as 

 wide as long antero-posteriorly as seen from above; temples and cheeks 

 receding posteriorly, not attaining the same plane as the outermost 

 outside line of the eyes; occipital carina present, distinct and complete, 

 joining the lower, hind corner of the malar space near the junction of 

 the oral carma with the malar space, above reaching close to the place 

 of the uppermost outside line of the ocelli; face convex, the convexity 

 extending distinctly beyond the foremost outside line of the eyes; 



Proceedings U.S.. National Museum, Vol. 43-No. 1942 



575 



