ICHNEUMON-FLIES OF AMERICA! 1. METOPIINAE 203 



Blackish brown. Head and mouth parts pale stramineous except 

 for a broad dark brown longitudinal stripe enclosing ocelli and con- 

 tinuing to between antennal sockets (a little narrowed toward an- 

 tennal sockets) and a brown area covering most of the hind part 

 of head above, the brown area narrowly connected behind ocelli 

 with the frontal stripe and laterally reaching hind margin of eye 

 near its top; antenna blackish brown, the scape pale brown in front; 

 broad upper margin of pronotum, entire under side of thorax, sides 

 of thorax except for the dorsal 0.3 ±, tegula, subtegular ridge, scutel- 

 lum, postscutellum, front and middle legs, and hind coxa, trochanters, 

 and femur, pale stramineous; central 0.3 of mesoscutum stramineous, 

 the rest light brown with a narrow lateral margin of blackish brown; 

 hind tibia pale stramineous, the basal and apical 0.15 and a stripe 

 the length of its front side, infuscate; hind tarsus pale stramineous, the 

 apex of each segment brown; abdominal tergites each with a large, 

 elongate, median, stramineous triangle, the base of the triangle on the 

 apical margin of each tergite ; third and following tergites stramineous 

 laterally. 



Type: 9, Vista, Calif., Sept. 5, 1955, D. J. Ott (Washington, 

 USNM 63653). 



Paratype: 9, Oaji, Calif., "3.8.92," H. C. Fall collection (Cambridge). 



A third female differs from the type and paratype in having the 

 metapleurum black, lateral third of mesoscutum blackish, and dark 

 markings on hind leg more distinct. It is labeled "Subirana Yoro, 

 Honduras, Stadelman" and is in the Cambridge collection. Possibly 

 it represents a distinct subspecies. 



VII. SIGNIFRONS GROUP 



Front wing 2.7 to 5.2 mm. long; head rather cubical, the temple 

 long and rather or quite flat and the cheek very short; face strongly 

 convex in profile, its interantennal process rather long and acute, its 

 point making an angle of about 30 degrees; frons protuberant centrally, 

 with a strong oblique impression above each antennal socket, some- 

 times with a high median lamellate carina; occipital carina absent, 

 or laterally present as a weak vestige; median 0.6 of clypeal margin 

 truncate; head black; more or less of the face, lower lateral part of 

 frons, mandible, and cheek, yellow; spot at top of eye elongate, 

 slanted slightly mesad posteriorly, often separated from margin of 

 eye, the two spots appearing as abbreviated parentheses around the 

 hind ocelli; notaulus moderately strong, very short; metapleurum 

 sometimes with a few discal hairs, these mostly in the posterior half; 

 costula complete, incomplete, or absent; median longitudinal carinae 

 and apical transverse carina of propodeum complete, the median 

 longitudinal carinae strongly bent inward just basad of the position 



