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NEW SOUTH AMERICAN PARASITIC HY^IENOPTERA.- 



By J. C. Crawford. 



Assistant Curator, Division of Insects, U. S. National Museum. 



In this paper three new genera and four new species are described. 

 The new genus in the Monodontomerinse is remarkable in the location 

 of the spurs on the hind tibi?e, while the one in the Perilampidse adds 

 a fourth genus to the group of gall-making chalcids. 



The term propodeum is used in this paper for the true first abdom- 

 inal segment, usuall}'^ called the ''metathorax/' and the latter term 

 is applied to the real metathorax. 



Family TORYMIDyE. 



Subfamily ]VIO]SrODO]SrTO]VIEE,IlSr.^E. 



PERISSOCENTRUS, new genus. 



Type.— P. cldlensis Crawford. 

 , Related to Monodontomerus, but the spurs on the hind tibiae not 

 apical, situated about two-thirds the length of the tibiae, fTom the 

 base (fig. 1); spurs very long, projecting beyond the apex of the 

 tibiae; hind femora with a large tooth and basad of this a smaller 

 triangular one; occipital foraminal depression margined; eyes hairy; 

 scutellum with a transverse furrow; first segment of abdomen with 

 the apical margin straight. 



This genus is readily separated from all the others in the subfamily 

 by the location of the spurs on the hind tibiae. 



PERISSOCENTRUS CHILENSIS, new species. 



Female. — Length about 3.5 mm.; ovipositor about 0.6 mm. Dark 

 bronz,}^ or purplish, with green in varpng lights, the head more 

 brassy and the abdomen jeneous; face finely rugulose, below insertion 

 of antennas with scattered fine punctures; occiput finely reticulately 

 lineolate; antennae dark brown, the scape metallic; thorax finely 

 reticulately striate, back of the transverse furrow on scutellum finely 

 longitudinally striate; the row of pits on tlie depressed apical mar- 

 gin of scutellum complete; propodeum with a strong median carina, 

 the surface on each side of this finely irregularly longitudinally 



Proceedings U. S. National Museum, Vol. 39— No. 1786. 



235 



