NEW NORTH AMERICAN HYMENOPTERA OF THE 

 FAMILY EITLOPHIDAE. 



By A. A. GiRAULT. 



Bureau of Entomology, United States Department of Agriculture. 



The following descriptions are based upon type material in the 

 United States National Museum. 



Genus ZAGRAMMOSOMA Ashmead. 



This genus bears two ring- joints and differs from Atoposoma 

 Masi in bearing a long, distinct propodeum. 



ZAGRAMMOSOMA NIGROLINEATA Crawford. 



This is a GyrolaseUa. The type and paratype are males. The 

 grooves on the scutellum of Z, flavoUneata Crawford and Z. cen- 

 trolineata Crawford are very faint. 



ZAGRAMMOSOMA INTERLINEATA, new species. 



Female. — Length, 2.05 mm. 



Differs notably from the description of the genotype as follows: 

 Near the lateral margin of venter of abdomen runs a metallic green 

 line from base to distal two-thirds and which is continuous wdth the 

 lateral line of the thorax. These markings also differ : No markings 

 on face; the line across cephalic vertex divides laterad and goes to 

 the eyes ; the two diverging lines on upper occiput meet at center of 

 the occiput, then diverge, thus forming a large X, each ventral arm 

 curving around to the apex of the eyes and from thence up the lower 

 occipital margin of the eye for a short distance ; dorsal edge of scape 

 and a spot above at base of the pedicel ; a long curved spot above on 

 hind coxa at base, a round dot on hind femur laterad before apex 

 and two dots dorsad a little more toward base; the dorso-lateral 

 stripe of thorax is broken at cephalic end of the parapsidal furrows; 

 the complete dorso-lateral stripe of pronotum also forms a continu- 

 ous line with a complete straight stripe through the parapside, but 

 the line changes angle at the parapside ; the median line of postscu- 

 tellum is marked by a triangle which does not extend to the apex; 

 the propodeum is about as in ameHcana but the lines in the place of 

 lateral carinae are incomplete at each end; the abdomen is remark- 



Proceedings U.S. National Museum, Vol. 51-No. 2148. 



125 



