234 iciixErMoxiD.T:. 



Genus SYZEUCTUS, Font. 

 Si/zeudiis, Forster, \evh. pr. lMi(>inl. 1SG8, p. 1G7. 



Gexotyimo, Ivhneiimon maculatorlus, V. 



Metathorax with elongate, and nearly always large, spiracles ; 

 nietapleune not separated from the nietanotuni by a carina. 

 Areolet entire and petiolate ; nervellus intercepting the first 

 recurrent of hind wings below its centi'e ; face more or less 

 iutumescent ; notauli entirely wanting ; scutellum laterally 

 margined only at base ; basal abdominal segment glabrous, with 

 spiracles before its centre; tarsal claws obsoletel}^ dentate and 

 setiferous. Thorax and abdomen rarely with red, but usually 

 with very profuse tiavous, markings ; scutellum and postscutelluin 

 usually entirely flavous. Erons rai'ely bitubereulate. 



Range. Eiu'ope, 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 

 their elongate metathoracic 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 th« species placed therein by Cameron belong, 

 in reality, to the present genus. 



Tahle of Species. 



1 (4) Wings hj'aline throughout. 



'2 (3) Abdomen strongly compressed ; 



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



3 (i^) Abdomen not compressed, nor 



antenna" pale-banded clanpennift, Cam., p. 235. 



4 (1) Wings distinctly inf uuiate apically. 



5 (6) Metathoracic spiracles luiniite and 



reniform anmdij^es, Cam., p. 230. 



6 (o) Metathoracic spiracles normal and 



elongate-ovate. 



7 (S) Flagellumcompresso-dilated beyond 



its centre zanthoritts, Cam., p. 238. 



i"^ (7) Flagellnni normal ; colour variable , haluc]iistanensiSj(j-Am..,-^.2dQ. 



165. Syzeuctus compressus, sp. n. 



2 . A profusely fla^ous-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 Irons 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 ll-jointed baud beyond their 

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



