216 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. 



"Thorax punctate, without furrows; legs black, the base of the tibiae 

 and tarsi brownish; wings hyaline, ])ube rent, the venation brown, the 

 marginal vein longer than the stigmal, the latter ending in a small 

 knob. Abdomen twice as long as the head and thorax together, linear- 

 fusiform, lineatedly rugulose, the apex of the horn in the female pol- 

 ished. 



"Habitat. — Lincoln, Nebr. 



"Type in National ]\Iuseum. 



"This species was reared by Prof. L. Bruner from the eggs of Oecan- 

 thus niveus, and probably is the insect that Mr. Howard Ayers treats 

 under the genus Teleas in his biological study published in Memoirs 

 Bost. Soc. N. H., vol. Ill, p. 225, 1884."— [From Riley's MS.] 



MACROTELEIA Westwood. 



Proc. Zoiil. Soc, 1835, p. 70. 

 (Type A/, eleoniimoidex Westw.) 



Head transverse, subquadrate, broader than the thorax, the frons 

 convex, the occiput slightly emarginate; ocelli 3 in a triangle, the lat- 

 eral touching the eye; eyes oval, bare. 



Antennae inserted just above the clypeus, 12-iointed in both sexes, 

 in 9 clavate, the club large, G-jointed; in $ long, filiform, the first 

 flagellar joint scarcely longer than the third, the third excised. 



Maxillary palpi short, 4 jointed; labial palpi 3 jointed. 



Mandibles tridentate. 



Thorax ovate, the prothorax slightly visible from above; mesothorax 

 with or without furrows; scutellum semicircular; metathorax not very 

 short with two carinae above, diverging posteriorly, and with delicate 

 lateral carinae. 



Front wings with a long marginal vein nearly twice the length of 

 the stigmal, the postmarginal greatly lengthened, the stigmal vein ob- 

 lique, usually with a little knob and sometimes with a radial branch 

 from its tip; basal vein sometimes present, usually obsolete. 



Abdomen sessile, greatly elongated, fusiform or linear, projecting be- 

 yond the tip of the wings when folded, the first four segments nearly 

 equal. 



Legs as in Baryconus, the tibial spurs 1, 1, 1, distinct, the basal joint 

 of hind tarsi less than thrice as long as the second. 



Distinguished by the long marginal nervure and the greatly elongate, 

 fusiform abdomen. Species occur with and without parapsidal furrows, 

 and with and without a basal nervure, and these characters can be used 

 to separate tlie genus into sections. If the species become numerous 

 they might be entitled to generit; value. The genus is parasitic on the 

 eggs of the locustid genus Orchelimum, 



