186 BRITISH ICHNEUMONS. [ Trvphon 

bushes. It has been found in Cornwall (Marquand), Devon (Bignell), 
Gloucester and Somerset (Charbonnier), Hants (Miss Chawner), Isle of 
Wight and Northants (Morley), Sussex (Bloomfield), Surrey (Capron), 
London (Brunetti), Herts (Piffard), Hereford (Yerbury, E.M.M. 1902, 
p- 55), Stafford (Tomlin), Shropshire (Beaumont), Worcester (Fletcher), 
Suffolk (Tuck), Norfolk (Bridgman), Notts and Lincs. (Thornley) ; but it 
appears rarer further north and is only once mentioned from Yorks 
(Porritt, Yorks. Nat. 1882, p. 57); Marshall has given it me from south 
Wales. 
This species has not been bred on the Continent, and Mr. J. E. 
Fletcher’s excellent account of its economy (E.M.M. 1889, p. 400) appears 
to have eluded subsequent notice :—In March, 1885, he took three and a 
half inches of decayed wood from a willow, crowded with cocoons of the 
fossor, Crabro leucostoma, Linn. ‘Therefrom emerged during the follow- 
. ing May and June twenty-seven specimens of the host with a small 
Tachinid fly and a single 7. s¢gnafor. Careful investigation showed 
twenty-nine vacated cocoons, of which that from which the 77yphon 
emerged was perforated at the anal extremity and contained its own 
exuviae. He adds that when found the hosts’ cocoons were so close to 
the exposed surface of the wood as to offer no obstacle to the parasite’s 
oviposition, supposing it were the cocoon that was attacked. 
10. nigripes, Holmgr. 
Tryphon rutilator, var. 11, Gr. I. E. ii.313, ¢. T. nigripes, Holmgr. Sv. Ak. 
Handl. 1855, p. 189, ¢; Thoms. O. E. ix. 898, ¢ ¢. 
Shining and black, with only the mouth and sometimes apex of cly- 
peus piceous; face black and subconvex with griseous pilosity; clypeus 
transversely elevated behind its centre, and apically nearly smooth ; frons 
closely punctate and apically impressed ; ¢ palpi stramineous. Antennae 
black, and hardly paler in 9 beneath. Metanotum with at most three 
very obsolete areae, and all costae weak. Scutellum somewhat smooth 
and laterally margined to beyond its centre. Abdomen shining, very 
finely and obsoletely punctate; basal segment black and sparsely punctu- 
late, margined, with weak carinae hardly extending beyond its centre ; 
four following segments and the hypopygium red, the two apical in ? 
white-margined ; terebra red and somewhat short. Anterior legs alone 
pale with coxae, trochanters and base of femora black ; hind tarsi infus- 
cate. Tegulae black and radix stramineous ; areolet small, irregular and 
petiolate. Length, 6—9 mm. 
Known from its congeners with simple scrobes and black hind femora 
by its obsolete basal metanotal areae and entirely black hind tibiae. 
Apparently very rare and perhaps no more than a variety of the follow- 
ing. Gravenhorst knew two German males, Holmgren knew two Swedish 
females, Tosquinet records it (Ann. Soc. Ent. Belg. 1890, p. 91) from Bel- 
gium, and Gaulle from France. In Marshall’s collection are four males 
from Bugbrooke in Northants and Swanage; I possess two males of the 
maximum size, captured by Tuck, probably upon flowers, at Tostock in 
Suffolk, during July, 1899 and 1900. 
