Exochus | BRITISH ICHNEUMONS. 35 
(58). 
(33)- 
(32)- 
(31). 
(30). 
(29). 
(28). 
(43)- 
(38). 
(37): 
(36). 
(35): 
(42). 
(41). 
(40). 
(39). 
(34)- 
(45). 
(44). 
(53). 
(50). 
(49). 
(48). 
(47). 
(52). 
(51). 
(46). 
(55). 
(54). 

27. 
28. 
29. 
30. 
B14 
Be. 
33: 
Hind femora mainly red; _ vertical 
orbits with pale dots. 
Basal nervure exactly continuous 
through the median. 
Carinae of basal segment extending 
to centre ; thorax immaculate. 
Abdomen immaculate black ; femora 
entirely red 
Abdomen centrally red; femora bas- 
ally broadly black : 
Carinae of basal segment extending 
to apex; thorax ‘pale- -marked 
Basal nervure distinctly postfurcal 
below median. 
. External hind calcar as long as apical 
breadth of its tibia. 
. Frontal orbits immaculate black; 9 
coxae concolorous. 
. Antennae attenuate; d face entirely, 
and scutellum apically, pale 
. Antennae filiform; ¢@ face and scu- 
ne 4 its). 
. Frontal orbits partly pale, and coxae 
tellum not pale 
usually concolorous. 
. External orbits distinctly pale ; thorax 
never red-marked. 
. Areola entire; stigma and sides of g 
abdomen pale 
. Areola apically wanting; stigma and 
abdomen black 
. External orbits immaculate; thorax 
often mainly red 
. External hind calcar minute, much 
shorter than breadth of tibia. Kis 
intermedius, Morl.| 
. Frontal orbits and whole face stramin- 
eous 
_ Frontal orbits and at least part of 9 
face black. 
. Hind tibiae broadly white-banded, 
with base black, 
. Hind tarsi white, determinately black- 
. banded. 
. Scutellum black; hind tibiae nigres- 
cent 
. Scutellum apically pale; hind tibiae 
rufescent 
. Hind tarsi not black- banded, 
. Areola parallel-sided; hind tibiae tri- 
coloured 
. Areola apically explanate ; hind tibiae 
bicoloured 
. Hind tibiae red, at most with extreme 
base black or white. 
. Basal segment bicarinate to centre; 
hind tibiae basally white 
5. Basal segment not bicarinate to cen- 
tre; tibiae not basally paler. 
22, 
. GRAVIPES, Grav. 
. GRAVIS, Grav. 
. BRITANNICUS, Mor, 
. PROSOPIUS, Grav. 
NIGRIPALPIS, Zhomzs. 
. FLAVOMARGINATUS, A//e¢ 
. PicTus, Holmgr. 
. ERYTHRONOTUS, Grav. 
DECORATUS, /lo/mgr. 
, ALPINUS Zeéf#z. 
. NOTATUS, Hlolmgr. 
. LENTIPES, Grav. 
. TIBIALIS, olmgr. 
. FLETCHERI, Bridg. 
