ART. 15». REVISION OF SUBFAMILY PLATYGASTERINAE FOUTS. 5 



equal, not much longer than wide; joint ten conical, sharp at apex, 

 longer than four; abdomen as long as the head and thorax united, 

 as wide as the thorax, four-sevenths times as wide as long, rounded 

 apically; wings long, pubescent, ciliate, tinged with brown. 



Type locality. — Marin County, California. 



Type.— Cat. No. 2267, U.S.N.M. 



Redescribed from the type female and allotype male, 



2. AMBLYASPIS OCCIDENTALIS Ashmead. 



Amhlyaspis occidentalis Ashmead, Bull. 45, U. S. Nat. Mus., 1893, p. 267. 



Female. — Length 0.8 mm. Whole specimen, except the abdomen, 

 lost; "polished black, impunctured; antennae brown black, the scape 

 pale at base; legs brownish, trochanters, base of tibiae and tarsi, 

 honey yellow. Antennae ten-jointed; pedicel a little shorter than 

 the first two funiclar joints together; first and second funiclar joints 

 equal, third much shorter and more slender, fourth transverse; club 

 four-jointed, the last two joints closely united, th« first two about 

 equal, a little wider than long, rounded off at base. Scutellum trian- 

 gular, pubescent, very slightly impressed on each side at base, but 

 medially subconvex and not separated from the mesonotum. Meta- 

 thorax and metapleura pubescent. Wings hyaline. Abdomen as 

 long as the head and thorax together, black, polished, the petiole and 

 base of second segment pubescent"; abdomen distinctly less than 

 twice as long as wide, the last segment alone punctate; second tergite 

 a little longer than wide, nearly twice as wide apically as at base; ter- 

 gites three to five very short, polished, broadly transverse. 



Type locality. — Riley County, Kansas. 



Type.~Q.iit. No. 25425, U.S.N.M. 



Redescribed from the type specimen. 



3. AMBLYASPIS PETIOLATUS Ashmead. 



Amhlyaspis petiolatus Ashmead, Bull. 45, U. S. Nat. Mus., 1893, p. 268, female 

 and male. — Brues, Bull. No. 22, Conn. Geol. and Nat. Hist. Survey, 

 1916, p. 533. 



Female. — Length L33 mm. Head less than twice as wide as long, 

 not omarginate behind, as wide as the thorax; frons finely reticulate, 

 subopaque; vertex immargined posteriorly; lateral ocelli nearer to 

 the eye margin than to the anterior ocellus; pedicel twice as long as 

 wide, scarcely longer than the third antennal joint; joints eight and 

 nine hardly longer than wide, not produced outwardly as in calif orn- 

 icus; ten conical, sharply pointed apically, longer than nine; thorax 

 a little over two-thirds as wide as long, convex above, as high as wide; 

 mesonotum faintly reticulate; notauli present, widely separated in 

 front of the scutellum, reaching to the middle of the mesonotum; 

 median lobe of mesonotum truncate posteriorly, touching the scutel- 



