Ichneumonidous Group Tryphonides schizodonti. 431 



HOLMGRENI, $ . RUFIVENTRIS, 9 • 



Flagellum ferrugineous, 22-jointed infuscate above, 18-jointed. 



Metathorax more rugose less rugose. 



Basal segment longer. 



rugose with carina? distinct less rugose with shorter 



carinas. 



2nd segment fulvous or (var. b) black with red line thyridii 



basally black with thyridii obsolete large and subcircular. 



2nd to Uh with epipleura indexed 2nd and 3rd with epipleura? 



indexed. 



3rd and 4th always red red, discally black-marked. 



Hind legs elongate less elongate. 



femora red red with black dot beneath. 



trochanters citrinoua stramineous, basally black. 



coxse basally black black to beyond their centre. 



Intermediate coxx citrinoua basally black.] 



B. albosignatus, Grav. (4.) Certainly rare, occurring only 

 in July ; Cadney, Lines. (Peacock) ; Nairn ( Ycrbury) ; 

 Southwold on flowers of Heracleum spliondylium ; 

 Kessingland, Suffolk, flying on the beach. It has 

 been bred from Syrp>hus sp. [ = albosignatus, Grav., 

 $ et var. 3, $ ; Holmgr., excl. var. 3.] 



B. varicoxa. Thorns. (17.) Common, June to August ; 

 Suffolk, Cambs., Herts., Point of Aire. [ = albosig- 

 natus, var. 3, Holmgr. = ? albosignatus, var. 1, Grav.] 



B. annulatus, Grav. (9.) Not very common from middle of 

 July to end of September ; Suffolk, Surrey. [ = ? 

 albosignatus, var. 2, Grav. It differs from B. varicoxa, 

 Thorns., in the less deeply impressed incisures, 

 entirely ($) and internally (£) ferrugineous apices of 

 hind tibiae ; smaller humeral and scutellar pale marks 

 and immaculate $ epistoma. The latter is probably 

 no more than a variety.] 



B. tricinctvs, Grav. (43.) Abundant, May to September ; 

 Isle of Mull (Tomlin); Yorks. (Askrigg, [Elliott), 

 Gloucester, Hereford, Herts., Suffolk, London, Surrey, 

 Sussex, Hants., Devon. [= albosignatus, var. 4, $, 

 Grav. = nemoralis, Holmgr. This species differs from 

 nemoralis in nothing but the abdominal coloration ; 

 the latter is a var.] 



B. Isdatorius, Fab. (90.) Abundant, May to September ; 

 Norfolk, Suffolk, Essex, Lines., Herts., Gloucester, 



