126 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 65, 



and allotype, according to the labeling, are the parents of one of the 

 male paratypes, all three of these specimens bearing, in addition to 

 the Webster number, Martinez No, 17211. Three other paratypes 

 are from Altamount and bear Martinez No. 17215. Four paratypes 

 are from Benicia, California, three of these bearing Martinez No. 

 17204, and one Martinez No. 17218. Four paratypes under Martinez 

 Nos. 1724, 1717, and 1748 are from Concord, California. 



Adults of this species emerge from the puparia of the host. The 

 parasite oviposits in the host puparium and its larva feeds externally 

 upon the host larva within the puparium. 



Family PTEROMALIDAE, 

 HETEROSCHEMA, new genus. 



Female. — Antennae slightly above the middle of the face with 

 three ring joints, a five- jointed funicle, and the club distinctly three 

 jointed, antennal pedicel about equal to or a little shorter than the 

 first funicle joint; head strongly transverse, the occiput immargined, 

 scarcely at all concave; posterior orbits narrow and strongly re- 

 ceding; ocelli in a low triangle; left mandible three-dentate, the 

 right four-dentate, anterior margin of the clypeus straight, face 

 broad, slightly convex; thorax robust, the pronotum short, strongly 

 transverse ; mesoscutum nearly twice as broad as long, the parapsidal 

 grooves deeply impressed anteriorly, effaced behind the middle; scu- 

 tellum convex, with a distinct cross-furrow at the apical fourth; 

 propodeum short, with a distinct neck, and a strong transverse carina 

 which separates the neck from the rest of the propodeum, also with 

 a strong median longitudinal carina; propodeal spiracles oval and 

 very close to the base ; postmarginal vein twice as long as the stigmal ; 

 abdomen conic ovate, with a very short smooth petiole which barely 

 extends beyond the apex of the neck of propodeum ; first tergite be- 

 yond the petiole comprising a little less than half the total length of 

 the abdomen. 



Type of the genus. — HeteroscheTna prima^ new species. 



HETEROSCHEMA PRIMA, new species. 



Female. — Length 1.9 mm. Head and thorax black; abdomen me- 

 tallic blue-green ; scape testaceous, pedicel and flagellum black ; coxae 

 and all femora black, the femora at apex and all tibiae and tarsi tes- 

 taceous ; trochanters also more or less testaceous, wings hyaline, the 

 veins mostly testaceous; tegulae testaceous. Head and thorax with 

 shallow irregular thimble-like punctures, those on the head not as 

 strong as on the mesoscutum; first joint of funicle about one and 

 one-half times as long as thick, folloAving joints slightly shorter; 

 club not thicker than the funicle ; lower part of face with striae con- 

 verging toward the mouth: frontal depression small and moderately 



