180 BULLETIN 15, UNITED STATES NATIONAL MUSEUM. 



distiuct, the iniiigiual nervure short, about twice us long- as thick, the 

 post-marginal nervure wanting, the stignial long, oblique. 



IlAiJiTAT. — Brooklyn, Xew York. 



Types in National Museum. 



This species, as Ave are informed 1>y Mr. Howard, was reared by ( 'ol. 

 Nicholas Pike from spider eggs in an orange cocoon belonging to the 

 family Epeiridw. 



The male, here described, was reared by Mr, J. H. Emerton, in 1871, 

 together with several females, from an orange-colored spider's cocoon. 



Tribe III. — Teleasini. 



An extensive tribe with few genera, but numerous in species, distin- 

 guished by the autennte being inserted close together on a clypeal 

 prominence ; by the venation, the postmarginal vein never being devel- 

 oped, the marginal vein always greatly lengthened, and the stigmal 

 vein always minute, scarcely developed ; by the abdomen always being 

 distinctly carinated along the sides, with the third segment the long- 

 est ; and by the weak tibial spurs. 



Under this tribe six genera are brouglit together, IVIcas, I'rosacan- 

 th<(, and allied genera. 



Except in a single instance, the rearing- of rrosHcanihd carabonim, 

 by Dr. Kiley, from the eggs of a beetle, Ckkcniiis imp unci ifrons, noth- 

 ing positively is known of the i)arasitism of the group. It is possible 

 they confine their attacks to Coleopterous eggs, although Frosacantha 

 basalts Forster is recorded as having been reared from Dipterous lar- 

 va\ Since this record is totally at variance with the habits of the 

 Avhcde subfamily Scclioniucr, I (pu'stion its accuracy, as I believe the 

 whole group are Q'^i^x parasites. 



The genera may be tabulated as follows : 



J'AIJLE Ol' (IJOXEllA. 



1 KMALKS. 



Alxloiiicii lnoadlj' oval, the first scgiiient wider than long ){ 



Abdomon long-oval, orlongovate, the first segment potioliforni (longer than wide). 

 First abdominal segment bearing a horn ; postscntellum with thrc^e sjiiiies. 



Pextacaxtua Ashni. 

 First alMloiniiial segiiiciit witlioiit a horn. 



Mesonotum without furrows 2 



Mesonotuni with 2 furrows. 



Metascntelliim with 3 spines Tkissacantiia Ashm. 



Mctascutelluni with 1 spine Xknomkrcs Walk. 



2. Postscntellum Avith a single large spine, mandibles bifi<l, the outer tooth tiie 



longer. 



Posterior teniora, tibia-, and tarsi slemb'r ; tibial s]»nis weak.PKosACANTiiA Nees. 



I'osteiiiir femora swollen, tibiie dilated at ajuiX, the )»asal» tarsal joint short. 



stout • tibial spurs not weak Tklkas Latr. 



