Stenomacrus | BRITISH ICHNEUMONS. tk 

Distinct in having the head not atall constricted posteriorly, the radius 
apically elongate, anal nervure emitted from centre of brachial cell, legs 
not slender and, unlike all its allies, the terebra elongately exserted. 
Hitherto only known from Sweden; but I possess three females in 
Capron’s Surrey collection. 
15. affinis, Zett. 
Bassus affinis, Zett. I. L. 379, ¢. Orthocentrus affinis, Holmgr. Sv. Ak. 
Handl. 1855, p. 347, ¢ ?. O. morionellus, Holmgr. lib. cit. p. 341; Brisch. 
Schr. Ges. Konig. 1871, p. 102; Schr. Nat. Ges. Danz. 1878, p. 109, ¢ ¢. Steno- 
macrus affinis, Thoms. O. E. xxii. 2449, ¢ ?. 
A shining, punctulate and nigrescent species. Head subbuccate and 
not posteriorly constricted, with the mouth and in male both face and 
cheeks flavescent; vertex slightly emarginate ; face normally prominent 
and subobsoletely punctate; frons deplanate. Antennae longer than head 
and thorax, testaceous beneath towards the base; basal flagellar joint in 
both sexes cylindrical and longer than broad. ‘Thorax with metathoracic 
areae complete but stronger in @, or rarely (var. morvonellus) entirely 
wanting. Abdomen with the venter pale; basal segment broad and as 
long as the hind coxae, a little convex, finely aciculate and beyond its 
centre laterally impressed ; following segments very smooth. Legs tes- 
taceous and unusually slender ; hind femora and tibiae not incrassate, and 
more or less piceous. Wings with pale tegulae; radial nervure emitted 
trom centre of stigma and slightly but distinctly curved apically ; anal 
nervure emitted from almost above centre of brachial cell. Length, 
2—24 mm. 
I do not know this species, which appears badly defined, though Holm- 
gren says it is easily known by theabdominal puncturation (only described 
as above) and slender hind legs; Thomson distinguishes it and its four 
Swedish allies from S. everens merely by the concealed terebra. 
It is said to be common in Scandinavia from July to September and 
was introduced as British by Rev. T. A. Marshall in 1870; there are, how- 
ever, no examples purporting to belong here in his own, Desvignes’, 
Stephens’, nor the British Museum collections, and I know not whence 
his record was derived. 
16. pusillus, Zett. 
Bassus pusillus, Zett. I. L. 379, ¢ (nec Holmgr.). Orthocentrus Merula, 
Holmgr. Sv. Ak. Handl. 1855, p. 349, excl. 2 (mec Grav.). O. ochripes, Holmgr. 
lib. cit. p. 350, ¢. Stenomacrus ochripes, Thoms. O. E. xxii. 2446, 3 ?. 
Head a little buccate with the frons smooth and subdeplanate ; face 
strongly protuberant, shining, sparsely and finely punctate, of ¢ entirely 
or mainly flavous and of ? nigrescent with the upper margin testaceous. 
Antennae longer than half the body, piceous, paler below and especially 
basally; two basal flagellar joints subquadrate in ? or a little longer than 
broad in g. ‘Thorax narrower than head, subcompressed, shining, 
punctulate, shortly pubescent and black; areola and petiolar area dis- 
tinct. Abdomen somewhat longer than head and thorax ; basal segment 
scabriculous, basally subintumescent and beyond its centre laterally im- 
pressed ; second segment basally in 9, and with basal half in @, acicu- 
late ; the following very smooth and shining. Legs normal and nigrescent 
