234 



Genus SYZEUCTUS, FiJrst. 

 Syzeudus, Filter, Verb, pr. Rheinl. 1868, p. 167. 



GEXOTTPE, Ichneumon maculatorius, IT. 



Metathorax with elongate, and nearly always large, spiracles ; 

 metapleura not separated from the metanotum by a carina. 

 Areolet entire and petiolate ; nervellus intercepting the first 

 recurrent of hind wiugs below its centre; face more or less 

 intumescent ; notauli entirely wanting ; scutellum laterally 

 margined only at base ; basal abdominal segment glabrous, with 

 spiracles before its centre; tarsal claws obsoletely dentate and 

 setiferous. Thorax and abdomen rarely with red, but usually 

 with verv profuse flavous, markings ; scutellum and postscutellum 

 usually entirely flavous. Frons rarely bituberculate. 



Range. Europe, Asia. 



Species of Lissonota were not relegated to this genus till it was 

 used by Thomson in 1889, when some of the prettiest of the 

 European representatives were included therein, on account of 

 tlieir elongate metathnracic spiracles, which are also usually much 

 larger than the circular ones of Lissonota, though in the Indian 

 species they are often so minute that the microscope is necessary 

 to distinguish their conformation. I have remarked under 

 Lissonota that it appears to me extremely probable that some, if 

 not the majority, of the species placed therein by Cameron belong, 

 in reality, to the present genus. 



Table of Species. 



1 (4) Wings hyaline throughout. 



'2 (3) Abdomen strongly compressed ; 



antennae pale-banded compressus, sp. n., p. 234. 



3 (2) Abdomen not compressed, nor 



antenna; pale-handed claripennis, Cam., p. 235. 



4 (1) Wings distinctly infuinate apically. 



5 (6) Metathoracic spiracles minute and 



reniform annulipes, Cam., p. 236. 



6 (o) Metathoracic spiracles normal and 



elongate-ovate. 



7 (8) Flagellum compresso-clilated beyond 



its centre zanthorius, Cam., p. 238. 



8 (7) Flagellum normal ; colour variable . baluchistanensis, Cam., p.239. 



165. Syzeuctus compressus, sp. n. 



$ . A profusely flavous-marked black species, with the wings 

 entirely hyaline and the abdomen strongly compressed. Head 

 vertical behind the internally parallel eyes, flavous, with the 

 occiput, ocelli, the centrally sulcate frons more narrowly above, 

 and centre of face, alone black ; clypeus semicircular, convex and 

 apically rounded. Antenna slender, filiform and a little attenuate 

 at their apices ; black, with a broad 11-jointed band beyond their 

 centre and the scape beneath, white. Thorax evenly punctate, 



