aut. 15«. REVISION OF SUBFAMILY PLATYGASTERINAE FOUTS. 133 



with the original description; thoracic ratios: Length 20, width 12, 

 height 14; spine of scutellum nearly straight in one specimen and 

 strongly recurved in the other, about half as long as the rest of the 

 soutellum; abdomen about twice as long as jvitle, as wide as the 

 thorax, of a more slender shape than shown in the ligure referred to 

 above ; second tergite as long as wide, widest apically, not medially 

 as shown in the figure; tergites three to six polished, without visible 

 sculpture ; sixth tergite triangular, distinctly longer than wide, acutely 

 pointed and with straight sides, not curved as shown in the original 

 figure; hind wings with ^ long ciliary fringe. Shining black; scape 

 yellow at base, rest of antenna dark brown; coxae, femora and tibiae, 

 dark brown; trochanters golden yellow; tarsi stramineous. 



Type locality. — Fall Creek, New York. 



Type.— C'At. No. 25465, U.S.N. M. Type and paratype. 



Described from the tw^o types, deposited in the National Museum 

 by Crawford and Bradley. 



The original description of this species as the male of DolicJiotypes 

 hopMnsi is followed by a note saymg that Professor Comstock found 

 numerous specimens on a newly cut oak stump near Fall Creek. 

 Nothing more is said regardmg their habits. 



23. LEPTACIS BREVIVENTRIS Ashmead. 



Leptacis breviventris Ashmead, Bull. 45, U. S. Nat. Mus., 1893, p. 27.3. Female 



in part only. 

 Amblyaspis breviventris (Ashmead) Brues, Conn. State Geol. Nat. Hist. Surv., 



Bull. No. 22, 1916 (1917), p. 533. 



Female. — Length 0.7 mm. Robust; head scarcely wider than the 

 thorax, twice as wide as long; frons covered with fine undulating 

 elevations reticulate in a way but with the lines rounded and sub- 

 obsolete; occiput finely reticulate, separated from the vertex by a 

 blunt ridge; antennae a little longer than the head and thorax united, 

 inconspicuously pubescent; proportions of the thorax as follows: 

 Length 18, width 13, height 15; mesonotum somewhat flattened, 

 squarely excised posteriorly; notauli absent; scutellum convex, pol- 

 ished, not much wider than long, with the raised lateral margins far 

 down on its sides; spme short, straight, blunt at apex; abdomen 

 broadly elliptical, as long and as wide as the thorax, entirely smooth 

 and shining; second tergite a little wider than long; terminal tergites 

 broadly transverse, united one-third as long as the second; sixth ter- 

 gite wider than long, triangular, with a rounded apex ; wings hyalme, 

 twice as long as the thorax, the anterior pair without distinct marginal 

 cilia. Black: antenna (except the club) mandibles, front legs, and 

 all tarsi, yellow or light brown; rest of legs dark brown to lighter 

 shades of the same color, the femora the darkest. 



