140 ICHXEUMOXID.E. 



apically truncate; mandibles somewhat broad, with the apical 

 teeth of equal length; eyes oblong, touching the base of the 

 mandibles and emarginate next the scrobes. Antennae somewhat 

 short and stout, filiform, with the scape externally excised and 

 flagellar joints cylindrical. Thorax impunctate, stout and gibbu- 

 lous, a little longer than high ; notauli apically distinct ; meta- 

 notum areated, spiracles large and elongate. Scutellum convex. 

 Abdomen very smooth and not at all punctate discally ; segments 

 transverse and somewhat uneven, with the basal canaliculate ; 

 terebra emitted from a ventral fold, a third or a half the length of 

 the abdomen. Legs somewhat stout, with the hind ones incras- 

 sate ; claws simple, pulvilli large ; * hind femora crenulate apically 

 beneath. Wings with the areolet sessile and irregularly sub- 

 pentagoual. 



Range. Both hemispheres. 



This genus differs from Pimpla, which it strongly resembles in 

 shape and general facies, in its impunctate and entirely glabrous 

 abdomen and incrassate hind femora. 



Table of Species. 



1 (2) Metathoracic areola pyriform and 



apically strong clathrata, Krieg., p. 141. 



2 (1) Metathoracic areola quadrate and 



apically obsolete. 



3 (8) Metanotum discally transcarinate ; 



ocellar region immaculate. 



4 (7) Second recurrent emitted from be- 



yond centre of areolet. 



5 (6) Wings apically inf umate ; scutellum 



apically black nigrobalteata, Cam., p. 142. 



6 (o) Wings "hyaline throughout ; scu- 



tellum immaculate iridipennis, Cam., p. 142. 



7 (4) Second recurrent emitted from centre 



of areolet gracilis, Cam., p. 143. 



8 (3) Metanotum centrally glabrous 



throughout ; ocellar region black . maskeliyte, Cam., p. 144. 



* According to Ashmead (Proc. U.S. Nat. Museum, 1900, p. 55) Theronia 

 has the " claws very large, strongly pectinate," and this is blindly followed by 

 Cameron (Spolia Zeylanica, 1905, p. 134). I pointed out (Ichn. Brit. iii. p. 50) 

 that this genus has the " claws simple, pulvilli large " ; for Holmgren nowhere 

 makes any mention of their conformation, but Taschenberg (Zeits. Q-es. Nat. 

 1863, p. 256) says of Gravenhorst's types of the typical species, T. flavicans, 

 Grav. ( = atalanta, Poda), " Hinterbeine kraftig, besonders ihre Schenkel ; 

 Klauen aller einfach, ein gestieltes Polster dazwischen." Actually the claws 

 are large, curved, apically acuminate and neither internally pectinate nor 

 basally lobate. The four smooth-bodied Indian genera can. consequently, 

 hardly be considered more than subdivisions of Theronia, Holmgr. 



Mr. A. Roman, who has examined Thunberg's types at Upaala, is good 

 enough to inform me that Ichneumon gestator, Thunb. (Bull. Ac. Sc. Petersl>. 

 1822, p. 262), "is a ? of Theronia near T. zebra, Voll., but apparently another 

 species " ; and adds that I. sanguinator, Thunb. (I. c. p. 260) also indicated by 

 its author as Indian is in reality synonymous with the South African 

 Braconid, IphiatUaxflagra.tor, Gerst. 



