liPIllUYS.S.V. — miYSSA. 91 



mark, which is longer tluiii broad, of equal width throughout, and 

 transverse at both base and apex ; nietanotiim fulvous, with a 

 narrow line on its base, a large and somewhal triangular mark on 

 its apical half and an apical line, black ; pleurio fulvous, with 

 .short white pubescence, the propleurit with a conical mark below, 

 and the metapieurse below, and at apex, black. iScufdhnn entirely 

 fulvous and tiiiely trans-striate ; postscutelhun black. Abdomen 

 fulvous, with discal bands at base and apex of all tlie segments 

 nitidulous black, those on the penultimate segments diseally 

 continuous. Le(is fulvous, with a broad discal band slightly behind 

 the centre of all the femora and a shorter basal line on the hind 

 ones, the posterior tarsi entirely and their trochanters basally, the 

 hind tibiae broadly at both base and apex, and tiie front onychii, 

 black. Wings hyaline, with their apices distinctly infuniate ; 

 nervures and stigma black. 



Length 10 millim. 



Ceilon ; Hantane {E. E. Green). 



This species is much smaller than E. macidlcornis, of which it 

 may, nevertheless, constitute the alternate sex, though its colour 

 is described as of a much darker yellow and tiie black markings 

 are slightly more profuse, especially upon the legs ; unfortunately 

 the structure of the metatliorax is not yet indicated. 



Genus RHYSSA, Grav. 

 H/ii/ssa, Gravenhorst, Icbn. Eur. iii, 18:?9, p. :^60. 



Genotype, Ichneumon persuasoria, L. 



A genus of very large and strongly elongate species with trans- 

 striate mesonotum and terebra longer than the body. Head short, 

 subbuccate and transverse, usually dilated behind the oval or 

 subreniform eyes ; clypeus very sliort, strongly transverse aud 

 generally a little produced centrally at the apex, often indistinctly 

 separated basally ; mandibles basally broad. Antennae filiform, 

 not attenuate apically, with the flagellar joints elongate. Thorax 

 subcylindrical, diseally deplanate ; pronotum centrally glabrous ; 

 mesonotum closely and regularly trans-striate throughout, with 

 notauli entire and often deeply impressed; metanotum longi- 

 tudinaily canaliculate, with the areola rarely indicated ; spiracles 

 oblong or oval. Scutellum subconvex and apically obtuse. 

 Abdomen cylindrical, sessile, smooth aud shining, glabrous or 

 obsoletely alutaceous ; S with the ventral valvuhx) exserted ; 

 5 with the anus subcou)pressed, the third segment not basally 

 impressed, the eighth exserted and subtriangular, the apical 

 ventral not reaching the base of the terebra, which is longer than 

 the body, with the sheaths not pilose. Legs, especially the hind 

 pair, elongate; tarsal claws simple; posterior coxte subcylindrical. 

 Wings ample, though not broad, with the areolet entire, triangular, 

 sessile or subpetiolate ; nervollus intercepting the first recurrent 

 <jf lower wings very near its junction with the median nervure. 



Range. Pakearctic and Xearctic Kegions. 



