Phygadeuou.] BRITISH ICHNEUMONS. 93 



23. ambiguus, Grav. 



Phygadeuoit ambis^iiiis. Gr. I. E. ii. 703 ; Tasch. /cits. Ges. Nat. 1S65, p. 34, i ; 

 Brisch. Schr. Nal. Ges. Danz 1879, p. 342, 6 9. 



Head almost cubical, black ; clypeus discreted and apically obtusely 

 bidentate ; palpi red, face with grey pubescence. Antennae of $ entirely 

 black or with first three joints ferrugineous beneath ; of ? with the five 

 basal flagellar joints, and the scape beneath, red. Thorax immaculate ; 

 mctathorax coarsely punctate, areae complete and finer in ? ; areola 

 broader than long, hexagonal and somewhat roiuided basally ; petiolar 

 area nearly vertical, longitudinally rugose, of ? and usually of S discreted ; 

 apophyses wanting, spiracles circular. Scutelliuii black. Abdomen black, 

 of 5 lanceolate with segments two and three longer than broad; segments 

 two to four and in ^ more or less of the two following red, the apical ones 

 in S with red-yellow and in 9 with white margins ; basal segment sub- 

 linear, rugose, with normally prominent spiracles, a little dilated apically, 

 broader in ? ; post-petiole smoother, aciculate with obsolete carinae ; 

 second segment very feebly aciculate, with isolated jjunctures ; terebra 

 half the length of the basal segment. Legs red, with the coxae and tro- 

 chanters black ; anterior femora basally, the hind ones either entirely or 

 apically and beneath, together with their tarsi and base and apex of 

 tibiae, black ; ? with the anterior coxae red beneath. Wings hyaline ; 

 radix flavous, tegulae black. Length, 7-8 mm. 



Gravenhorst mentions a S with the second to fourth segments cas- 

 taneous throughout and the basal a little narrower ; and Brischke records 

 an analogous female. 



This species, which figures as insufficiently described in the latest Con- 

 tinental enumeration, has only been recorded from three German localities. 

 It was introduced as Jiritish by Desvignes (Cat. 60) in 1856 ; but it is 

 nearly certain that he incorrectly determined his representatives. I have 

 seen nothing quite like it, it is mentioned by no later observer and has 

 not been bred. It is, however, just possible that a single pair of 

 Phygadeuons in my collection, which Bignell found investigating worm- 

 wood in Devonshire and Bridgman considered undescribed, may be 

 referable to the present species. 



24. Marshalli, Jiriih:;. 



Phy_S;adeiion procerus, var. 2, Gr I. E. ii. 724, i. P. Marshalli, Bridt^. Trans. Ent. 

 Soc. 1883, p. 141, (J. (?) 'I heroscopus ingiedieus, Forst. Wiegm. Arch. 1850, p. 96,9; 

 Hcniileles ingredieits, Schm. Term. Fiiz. 1S97, p. 558, 9 . 



$. Head black, dull and closely punctate; not buccate behind the 

 eyes. Antennae either entirely dark ferrugineous, or rufescent beneath 

 with the scape black. Thorax dull, finely and closely punctate, with 

 distinct notauli ; mctathorax with two irregular, curved, transverse costae ; 

 areae incomplete, areola laterally obsolete. Scutellum black. Abdomen 

 cylindrical, black ; segments two to three red with infuscate fasciae 

 before their apices, that on the second the broader and sub-bisected 

 centrally ; the three following segments narrowly red-margined ; basal 

 segment but little narrower at the base than at the punclate-aciculate 



