26 BRITISH ICHNEUMONS. [ Polyclistus 

Like Gravenhorst and Thomson, I only know what I believe to be the 
female of this abundant species, though the above characters are constant 
throughout my fifty specimens; the former found it both upon house- 
windows and in fields from June to August; and it occurs nearly all over 
the Continent. With us it is very abundant and has been found about 
London, at Hertford, Darenth, in the New Forest, Norfolk and Salop 
(Stephens); Lastingham in Yorks (Roebuck); St. Albans, Darenth and 
Yorkshire (Marshall coll.) ; Bignell once bred it in Devonshire on oth 

July from Pyralis farinalis ; it has also been reared from Hyponomeuta 
padella according to Gaulle, but Giraud’s record from the dipterous 
Stratiomys viridula (Ann. Soc. France. 1877, p. 408) is doubtless an error, 
especially since Fitch bred it from Zor/rix pupae on both willow and 
sallow (Entom. 1883, p. 67 ef 1884, p. 68). Bradley has taken it at 
Sutton near Birmingham, Wilson Saunders at Reigate and Greenings, 
Charbonnier at Bristol and Shepton Mallet in Somerset, Capron in 
Surrey, Piffard in Herts., Sladen in Kent,.Tuck at Bury and Benacre in 
Suffolk, where I have met with it only at Southwold (a single female at 
indoor light on 7th September, 1907) and in my own house at Monks 
Soham. Here, however, it is extremely common on the windows from 
24th July to the end of August, every year; I once found it as late as 
metathorax shining, obsoletely punctured; all the areae clean-cut and well defined; petiolar ridge 
producing thorax laterally but not produced beyond it; areola elongate, hexagonal-triangular; spiracles 
large, circular and broadly margined. Scutellum flat, rather large, black; shining, wtth scattered 
punctures and exceedingly short hairs, and a series of lateral punctures. Abdomen black, very 
smooth and shining, and, especially laterally towards the apex, finely punctate and pubescent; first 
segment suddenly elevated just before the base, bicarinate and laterally margined ; second segment 
margined and finely but distinctly punctured laterally ; apex somewhat ferrugineous, with grey-red 
hairs: last ventral segment very remote from last dorsal; terebra rufous, deflexed and exserted, 
projecting from level with base of fourth dorsal segment and not quite reaching apex of abdomen; 
valvulae shorter than terebra, rufous and finely pilose; abdomen piceous below with ill-defined 
lighter central fold. Legs incrassate, entirely rufous but posterior coxae very slightly darker, the 
hind ones punctured with shallow, longitudinal median depression; tibiae externally and tarsi 
beneath setose. Wings slightly clouded, areolet wanting; stigma and nervures nigrescent, radix 
flavous. Length, 42 mm. 
