16 BRITISH ICHNEUMONS. [ Chorinaeus 

(5). 6. Anterior coxae black; female face 
centrally black e .. 2. FUNEBRIS, Grav. 
(4). 7. Lower basal nervure postfurcal; hind 
tibiae all flavous .. os 3. FLAVIPES, Bragg. 
(3). 8. Larger; antennae longer; ‘cheeks 
buccate the 4. LONGICORNIS, Zhom. 
(2). 9. Intermediate calcaria of very unequal 
length; second segment tricarin- 
ate. te 5. TRICARINATUS, A//m., 
(1). 10. Basal segment “weakly bicarinate, 
second with no trace of carinae. 
(12). 11. Legs mainly black, hind tibiae csi 
pale .. 6. TALPA, Aad. 
(11). 12. Legs red, with ‘only the hind coxae 
partly black . ASPER, Grav. 
~<T 
1. cristator, Grav. 
Exochus cristator, Gr. I. E. ii. 352; Steph. Illus. M. vii. 267, ¢ ¢. Chorinacus 
subcarinatus, Holmgr. Sv. Ak. Handl. 1855, p. 321, ¢. C. cristator, Holmgr. 
Ofv. 1873, p. 78; Brisch. Schr. Ges. Kon. 1871, p. 101; Schr. Nat. Ges. Danz. 
1878, p. 108; Voll. Pinac. xxxviii, figg. 3et 4; Thoms. Deut. Ent. Zeit. 1887, 
p. 200; 3 2: 
Head black and posteriorly not narrower than the internally broadly 
emarginate eyes; face, the normally broad cheeks, and the mouth except 
apices of the bidentate mandibles, flavous ; face prominent and finely 
punctate, frons nitidulous and centrally impressed. Antennae filiform and 
not longer than half the body, rufescent beneath ; basal flagellar joint 
longer than broad and hardly longer than the second. ‘Thorax stout, 
black and nitidulous, as broad as the head and not very closely punctate ; 
notauli wanting; pleurae shining and finely punctate; metathorax sub- 
glabrous with two strong and parallel longitudinal discal carinae, apically 
connected with two more on either side which include the small and 
circular spiracles. Scutellum large, deplanate, sparsely punctate and 
bordered throughout, with its base truncate. Abdomen nearly double 
length of head and thorax, broader behind centre, discally black with 
venter ochraceous; all the segments dull and scabriculously punctate, 
with elongate griseous pilosity; basal segment strongly bicarinate and 
laterally margined ; second, and often third, with a single discal carina ; 
terebra very slender and concealed beneath pygidium, ¢ cerci somew hat 
prominent. Legs short, stout and fulvescent with the anterior coxae and 
trochanters, and extreme base of the hind tibiae, flavous; apices of tarsi 
and the hind coxae nigrescent; intermediate calcaria of equal length. 
Wings hyaline with no areolet; stigma and tegulae rufescent; radial 
nervure short and evenly curved; first discoidal cell apically acute ; basal 
nervure strongly curved and continuous through the median; radius of 
hind wing obsolete beyond recurrent nervure ; nervellus obsoletely inter- 
cepted but slightly below its centre and subantefurcal. Length, 5—6 mm. 
The 9? often has the segments apically rufescent; the pedal colour- 
ation is variable, since the intermediate femora are sometimes infuscate 
beneath, and the hind ones often apically and sometimes also both above 
and below black. 
This species is known from Germany, Sweden, France, and Lapland 
(cf. Roman, Nat. Unt. Sarek. 1909, p. 350). It is our commonest 
