92 BRITISH ICHNEUMONS. {Phygadeuon. 



radial nervure, the conformation of its petiole, distinct clypeal teeth, im- 

 punctate pronotum and the white ^ markings. 



A very cominon insect throughout the summer months, and usually 

 captured flying aI)out hushes on hot days ; Gravenhorst took it as late as 

 ist October. About London and near Hereford (Stephens) ; not un- 

 common at Norwich (Ihidgman) ; Nunton in Wilts (Marshall); Bickleigh 

 and Exeter (Bignell); Oxshott and Blackheath (Beaumont); Greenings 

 (W. Saunders) ; Nethy Bridge in July (Yerbury). I have found it in the 

 New Forest, Gosfield in Essex, Wicken Fen in Cambs. ; at Claydon 

 bridge on Angelica flowers, Brandon and the Bentley Woods, in Suffolk. 



22. mixtus, Bridg. 



Hcinileks mixtits, Bridg. Trans. F.nt. Soc. 1883, p. 148, 9 • rhygadeuon iiiix/tis, 

 Bridg. ///'. cit. 18S6, p. 339. 



Head smooth and shining, with white pubescence, sub-buccate behind 

 the eyes ; black, with mouth rufescent ; clypeus discreted and apically 

 rounded. Antennae short and stout, slightly longer dian half the body, 

 with their basal half rufescent ; basal fiagellar joint thrice, the second 

 a little, longer than broad. Thorax smooth and shining, with white 

 pubescence, a little longer than high ; notauli indistinct ; metathoracic 

 areae well defined, with areola transversely sub-hexagonal ; petiolar area 

 discreted, reaching beyond the centre ; apophyses distinct. Scutellum 

 black. Abdomen glabrous and nitidulous, ovate, with the apical half 

 setiferous ; segments two and three red, the latter centrally or with its 

 apical half infuscate ; basal segment elongate and rather longer than the 

 hind coxae and trochanters ; petiole parallel sided and half the apical 

 breadth of the gradually explanate post-petiole ; following segments trans- 

 verse ; terebra two-thirds the length of the abdomen. Legs slender and 

 red ; sometimes with the hind femora centrally, and the apical joint of the 

 tarsi, with apices of all the hind tarsal joints, infuscate. Wings basally 

 pale ; stigma j)iceous ; lower angle of the discoidal cell beneath centre of 

 the externally incomplete areolet. Length, 3^- mm. 



The legs and wings of this female resemble those of Heinikks, and 

 induced Bridgman to at first place it in that genus, from which he subse- 

 quently transferred it to fhygadeuon, after having submitted it to Professor 

 Thomson. Bridgman makes no mention of the radial nervure ; but the 

 ovate abdomen, elongate basal segment, discrefed petiolar area, and 

 smooth head appear to ally it with P. exis^uus. This species appears to 

 me to much more nearly represent the macropterous form of P. rotundi- 

 penfiis than P. fuinator, as was suggested by Bridgman, but it differs 

 materially in the thoracic sculpture and relative length of the flagellar 

 joints. 



This species has been recorded from Brundall near Norwich, Shere in 

 Surrey, and early in September at Tunbridge Wells. It appears to be- an 

 uncommon species, and I have seen but two examples ; one captured by 

 Bignell at Bickleigh in Devon, in the middle of Se[)tember, 1884, and 

 another which I swept by the Ouse at Brandon in Suffolk, on 7th of June, 

 1903. Schmiedeknecht has found it in Thiiringen. 



