Phj'fodiaeius.'] BRITISH ICHNEUMONS. 245 



larger one beneath the radix, flavous ; two parallel and basally explanate 

 vittae on the mesonotum testaceous-red ; pleurae, sternum and two cir- 

 cular spots above the hind coxae, red ; J with the mesosternum flavous ; 

 metathorax dull and shagreened, gradually sloping throughout, centrally 

 subsulcate ; petiolar area not basally carinate ; apophyses indicated. 

 Scutellum large, flavous and discally fulvous with its basal angles, an 

 oblong spot on the postscutclluni and both freni, flavous. Abdomen 

 smooth with the aj)ical scguK'nls obsoletely and narrowly glaucous; basal 

 segment twice longer than apically broad, slightly constricted before the 

 basal excavation ; second not transverse and sometimes narrowly pale 

 apicallv ; plica white ; terebra fully half length of the abdomen. Legs 

 flavous, slender and elongate ; front coxae and trochanters stramineous ; 

 hind legs fulvidous with their femora apicalh, trochanters externally, tarsi 

 and tibiae except the base of the latter, infuscate. Wings hyaline with 

 the radix and stigma pale; areolet obliquely triangular and subpetiolate, 

 emitting recurrent nervure from its apex; nervellus below centre. Length, 

 8 — 9^ mm. 



This very distinct species is at once known l)y its large size and the 

 broadlv red mesonotal vittae ; its legs and antennae are decidedly 

 elongate. 



It is at present known under Tliomson's name on the Continent, but 

 there is no shadow of doubt regarding the synonymy of Desvignes' species, 

 by which name it must of course be termed. 



Desvignes described this species from a single female in his own col- 

 lection, now in that of the British Museum; this I have examined. Thom- 

 son's specimens were found in Sweden and Brischke took his female in 

 Prussia towards the end of September, 1852 ; it also occurs in Thuringia 

 and Belgium in Mav, but appears to be local and not widely distributed. 

 Dale (E. M. M. 1903, p. 100) says he has found both sexes at Glanvilles 

 Wootton, in Dorsetshire, and Marshall also had both. 1 possess both 

 from Shere in Dr. Capron's collection whence he recorded them in 1885 

 (E. M. I\I. 1886, p. 264) and Beaumont took several specimens at Gosfield, 

 in Essex ; one female of his I have is dated 14th June, 1902. 



4. geniculatus, Thorns. 



Phytodietus penicillatus, Thorns. O.E. viii. 774, i ? . 



This species has the hind femora black before, but not at, their apices. 

 Length, 7 mm. 



It so closel}- resembles P. polyzonias fstgnitiitdlor, duc/l.) that even 

 Thomson gives no individual diagnosis ; he simply says that it diflers 

 from the latter in having the first segment more strongly narrowed 



