2 If) BULLETIN 45, UNITED STATES NATIONAL MUSEUM. 



" Thorax punctate, ^vitlioiit furrows; legs black, the base of the tibitie 

 and tarsi brownish; Mings hyaline, i)nbe cent, 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 ai)ex of the horn in the female pol- 

 ished. 



"Habitat. — Lincoln, Nebr. 



"Type in National ^Museum. 



"This si)ecies was reared by Prof. L. Bruner from the eggs of Occan- 

 thiifi niven.s, and probably is the insect that Mr. Howard Ayers treats 

 under the genus Tdcaa in his biological study published in Memoirs 

 Best. Soc. N. H., vol. Ill, p. 225, 1884."— [I'^i-ow RUcifn MH.] 



MACROTELEIA Westwood. 



Proc. Z()()l. Soc, IS35, p. 70. 

 (Typo M. eh<tiiii)itoi<li..s Westw.) 



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

 convex, the occi])ut slightly emarginate; ocelli 3 in a triangle, the lat- 

 eral touching the eye; eyes oval, bare. 



Autenniii inserted just above the (^lypeus, 12-jointed in both sexes, 

 in 9 clavate, the club large, fi-jointed; in S long, liliform, the tirst 

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



Maxillary i^alpi short, 4 jointed; labial palpi ."> jointed. 



Mandibles tridentate. 



Thorax ovate, the i)rothorax slightly visible from above; mesothorax 

 with or without furrows; scutellum semicircular; metathorax not very 

 short with two cariuii? above, diverging posteriorly, and with delicate 

 lateral carina\ 



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 j^resent, 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 tlie 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 si)ecies become numerous 

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

 eggs of the locustid genus Orchelimum. 



