HEM IG ASTER. 35 



This geiiiis may at once be iaiown from Macrorjaster by its 

 complete nietanotal area?, angled and intercepted second recurrent 

 of the hind wing, and the much shorter terebra. 



Cameron says (Manch. Mem. 18D9, p. 193) that Ilemicjaster has 

 the same neuration as Macroguster, but that in other respects it is 

 very dissimilar : — in not having the mesonotuin trilobate, the 

 spiracles betu eeu the centre and apex of the petiole, the three 

 basal segments greatly enlarged, the head smaller and the petiole 

 bicarinate. Though he considered 3Iacror/aster to belong to the 

 PiMPLiNiE, he Avould place his species of ifemiijaster between the 

 ICH:>EUi[oxiN.i: and CEYPTiXiE ; they are, however, associated in 

 a small group by themselves, in the middle of the Cryptin^, by 

 both Ash mead and Dalla Torre, possibly for no better reason than 

 that BruUe placed them in his third "type,"' Les Cryptus, in which 

 section, hovvever, was also included Afiriotypus, Curt. ! 



Table of Species. 



1 (2) Postpetiole 4-carinate ; face infuscate ; flagellar 



band weak fasciatus, Brul. 



2 (1) Postpetiole 2-cariuate ; face red ; flagellar band 



clear white carinifrons, Cam. 



7. Hemigaster fasciatus, Bml. 



Hentiguster fasciata, BruUe, Hist. Xat. lus. Hym. iv, p. 267, flg. ( 5). 



A red species with a broad abdominal band, the posterior legs 

 partly, and the white-banded antennae, black. Head red, with 

 the face and vertex laterally, and the lower orbits of the eyes, 

 infuscate ; face longitudinally prominent in the centre ; mandibles 

 apically Wack. AntemuH black, with the first two joints and base 

 of the third red, and an incomplete central flagellar band tiavescent. 

 Thorax subpubescent, with the mesonotal notaiili narrow, the lobes 

 not at all convex, and the central one longitudinally subsulcate ; 

 nietanotum broadly and deeply sulcate almost throughout, the 

 petiolar area bicostate and divided into three polygonal areas ; 

 apophyses distinct and obtuse. Ahdomen red, with the three basal 

 segments closely punctate ; basal segment with four longitudinal 

 discal carinte and a longitudinal black stripe on either side of the 

 disc; second with a black band, laterally rounded and not extending 

 to the side margins, occupying the basal two-thirds ; third segment 

 basally subinf iiscate ; terebra 25 millim. in length. Legs red, 

 with the anterior tarsi more or less inftiscate ; hind legs with the 

 tarsi entirely, and femora and tibiao towards their apices, black. 

 Wings hyaline, with the uervures rufescent. 



Length 10 millim. 



" Indes Okientales." 



oJ. 



