174 BRITISH ICHNEUMONS. [ Trematopygus 

Wings with stigma piceous, tegulae white; areolet entire and sub- 
pentagonal, emitting recurrent nervure a little beyond its centre; ner- 
vellus almost straight, intercepted at its lower third. Length,6 mm. 9 
only. 
Instantly known among its present associates by its shining body, 
narrow vertex and the strongly postfurcal lower basal nervure. 
This insect appears very little known. It is said by Holmgren, in 
describing the female, to have once been taken in Sweden on 1oth June, 
and Gaulle records it from France. Bridgman first found in Britain (Trans. 
Ent. Soc. 1886, p. 359) a female at the end of May, 1882, at Earlham 
near Norwich; and a second occurred to me on 30th May, 1898, by beat- 
ing bushes of mixed growth in Stanstead Wood, Suffolk. 
2. albipes, Grav. 
Tryphon albipes, Gr. 1. E. ii. 221, 2. Mesoleius albipes, Brisch. Schr. Phys. 
Ges. Konig. 1871, p. 82, ?. Trematopygus albipes, Brisch. Schr. Nat. Ges. Danz. 
1878, p.91, ?. Synomelix albipes, Pfank. Zeits. Hym.-Dip. 1906, p.291, 3 ?. 
A black species with the abdomen centrally red and hind tibiae broadly 
white. Head distinctly narrow posteriorly and strongly transverse ; 

mouth, clypeus and in @ both face and cheeks flavous; face closely 
punctate, dull and convex ; clypeus subdiscreted, apically impressed and 
sinuate; vertex abruptly declived. Antennae filiform and black, with 
flagellum basally rufescent beneath. ‘Thorax entirely black or in 6 
with pale radical callosities; notauli distinct and extending to disc; 
