118 BRITISH ICHNEUMONS. [ Promethus 

means strongly compressed. Legs slender and fulvous with all the tro- 
chanters and the anterior coxae pale testaceous or, in @, flavous; hind 
tarsi of ¢ subinfuscate. Wings with tegulae flavous; stigma pale and 
apically darker, or in g infuscate and basally paler; nervellus opposite 
and intercepted below its centre. Length, 4—6 mm. 
The g abdomen is rarely black-marked centrally. 
It is a very abdundant species and occurs from Lapland to France and 
Hungary; I have recently seen it from India. With us it probably is 
found throughout the British Isles from Lands End to the Orkneys*, 
though I have no records from Ireland or the west of England. It is on 
the wing from 27th May to 30th September in Suffolk and is usually cap- 
tured by casual sweeping, though I havea few times seen it on the flowers 
of Angelica sylvestris and grubbed it from the roots of marram grass on the 
coast. It is by no means confined to marshy situations, though commoner 
there. Holmgren once bred it from an undetermined species of Syrphus 
in Sweden, which is the only hint we have respecting its economy. 
2. albicoxis, Thoms. 
Bassus sulcator, var. 5, Gr. I. E. iii. 824, 3 (?). Promethus albicoxa, Thoms. 
O. E. xiv. 1479; Morl. Trans. Ent. Soc. 1905, p. 429, 3 ¢. 
Black with the centre of abdomen, which has the second segment 
densely aciculate, and the legs except their white coxae, red ; mesonotal 
notauli wanting; epistoma of Q subquadrately pale; ¢ with flavous 
humeral marks. Length, 5 mm. 
Instantly known from the preceding species, with which it was for so 
long a time intermingled by the white coxae, entirely wanting notauli, 
and the finely and densely strigose apical half of the second segment. 
The pale hind coxae and immaculate black scutellum render it distinct 
from the remainder of this genus. 
It has been found in France, Sweden and Germany ; and Gravenhorst’s 
extremely probably synonymous single male was taken by Hope at Net- 
ley in Shropshire. It is in all likelihood not uncommon with us, though 
I have rarely met with it, and it was not recognised as British till 1905, 
though specimens so named in Marshall’s collection are from Cornworthy 
and Botusfleming. The few specimens I possess, however, go to show 
that its range is extensive: Cannock Chase in June, 1904 (Tomlin) ; 
Shere (Capron), Reigate and Copthorne Common, in Surrey, in August 
(W. Saunders) ; Felden, in Herts (Piffard). I swept it from rushes in 
Hickling Marsh, in the Norfolk Broads, 12th June, 1901; took it from 
flowers of Angelica sylvestris at Spring Vale in Isle of Wight, 16th August, 
1903 ; and found it on the same plant at Henham Park, in Suffolk, 17th 
September, 1907. 
* Details of localities :—Cornwall—Botusfleming and Lands End; Devon—Bickleigh, Bishops 
Teignton, Cornworthy, Devonport, Plymouth; Hants—Lyndhurst, and Matley Bog; Sussex-— 
Hastings District; Surrey—Shere, Reigate and Greenings ; Herts—St. Albans, Felden; Wilts—Nun- 
ton; Cambs—Wicken, Burwell and Chippenham Fens; Suffolk—Timworth (Col. Nurse), Aldeburgh, 
Finborough and Benacre Broad (Tuck); Norfolk—Heigham, Brundall, Eaton, Cromer, W. Runton, 
Hunstanton, Buckenham Ferry, Wroxham and Ranworth Broads; Lincs.—Leamlands; common in 
Ireland (Haliday MS. in Dublin Museum): Scotland —Crockston (Dalglish). In Suffolk I have also 
found it at Brandon, Barton Mills, Mildenhall, Tuddenham Fen, Monks’ Soham, Claydon, Fox- 
hall, Lowestoft denes, Rushford, Southwold, Barnby Broad, Depden, Framlingham, Bungay and 
Pakenham Fen. 
