P/iyfodnufiis.] BRITISH ICHNEUMONS. 241 



1. polyzonias, Forst. 



Ichneumon polyzonias, Forst. Nov. Spp. Ins. 85; Grael. S.N. i. 2712,,?. Lis- 

 sonota polyzonias, Gr. I.E. iii. 68; Tasch. Zeits. Ges. Nat. 186:5, p. 281, cf. L. 

 pcctora/is, Gr. I.E. iii. 69, J ; Ratz. Ichn. d. Forst. ii. 97, ? ; cf. Tasch. Zeits. 

 Ges. Nat. 1863, p. 282. Phytodictiis segiiieutator, Gr. I.E. ii. 944; Tasch. Zeits. 

 Ges. Nat. 1863, p. 291, c? ? ; {? Ste. 111. M. vii. Suppl. p. 1, pi. xxxix, fig. 3, ?; 

 Holmgr. Sv. Ak. Handl. 1854, p. 90 ; lib. cit. 1860, n. 10, p. 63 ; Thorns. O.E. 

 viii. 773 ; Schm. Zool. Jahr. 1900, p. 339, cT ? ). P. coryphaeus, var. 3, Gr. I.E. 

 ii. 947, ? . 



Head very narroAv behind the eyes, with the mouth and vertical orbits 

 broadly flavous ; J also with the cheeks, frontal orbits to occiput and 

 usually the whole face bright flavous. Antennae very slender and dis- 

 tinctly longer than the body ; scape black and in J flavous beneath ; 

 flagellum entirely testaceous, with the basal joints in J infuscate above. 

 Thorax black ; of 9 ^vith only subhamate marks and callosities before the 

 radix on either side, another below it and a centrally interrupted fascia 

 across the metathorax testaceous ; but ^ with the pronotum, sternum, 

 apically hamate marks before the radix, two large callosities beneath it, 

 two subtriangular marks on disc of the mesonotum, lateral .sutures and 

 a subcruciform metanotal mark or arcuate fascia, with often spots above 

 the hind coxae, bright flavous ; J with mesopleurae and sternum usually, 

 though not always, concolourous. Scutellum, postscutellum and both freni 

 bright flavous, with a constant central longitudinal mark at the base of 

 the scutellum black. Abdomen a little longer than the head and thorax 

 and in J slightly narrower than the latter; all the segments brightly 

 glaucous-flavous margined ; basal segment of S sublinear and fully twice 

 longer than broad, of 9 broader and only half as long again as broad, in 

 both sexes subparallel-sided and distinctly explanate on either side at the 

 base ; ^ with second and third segments longer than broad and the 

 fourth quadrate, 9 ^vith the second quadrate and the following trans- 

 verse, all nitidulous and obsolelely shagreened with short, close, recum- 

 bent golden pubescence ; J valvulae subexserted ; abdomen 4 mm., 

 terebra 3 mm. Legs pale fuh-ous and distinctly elongate ; J with the 

 anterior coxae and trochanters stramineous and the intermediate coxae 

 black-marked ; hind trochanters and in ^ coxae laterally above, the tarsi 

 and most of their tibiae, black. Wings iridescent and very slightly 

 clouded ; .stigma and radius testaceous, radix and tegulae stramineous ; 

 areolet acutely triangular and subpetiolate, emitting the recurrent nervure 

 only just before its apex ; nervellus interrupting at lower third. Length, 

 7 — 8 mm. 



The (J of /.. polyzonias is said by Oravenhorst to be related to both 

 Z. culkifomn's diixd L. (Syzatctus) inisoriiis; the colour is somewhat similar, 



