210 BRITISH ICHNEUMONS. | Eventerus 


third longer than the second. Metathoracic areae complete and distinct, 
with the areola elongate and subhexagonal; pleurae hardly punctulate. 
Abdomen with the second to fourth segments red, in @ sometimes dark- 
marked; basal segment gradually explanate apically, with the discal 
carinae extending beyond its centre and spiracles somewhat prominent. 
Hind legs black with the tibiae, except apically, red; anterior legs red 
with the trochanters flavidous and coxae black. Nervellus intercepted 
below its centre. Length, 5 mm. 
A small and somewhat featureless, slender and shining species; the 
often dark-marked ¢ abdomen renders it liable to be mistaken for Z£. 
Dahlbom?, though the marks are not somewhat regularly triangular, as in 
the latter species. 
The first British record is from the Isle of Man, where Francis Walker 
found it in 1869 (Marshall, Entom. 1872-3, p. 432); and there are said to 
be examples from Govilon near Abergavenny and Cornworthy in Devon 
in the latter’s collection. I have recorded the species from Kerry in Ire- 
land (Irish Nat. 1903, p. 68); Dalglish has kindly sent it to me from 
Cambuslang in Lanark, captured on zoth June, 1899, and Elliott found 
females at Banchory in the Scots highlands in September. 
10. aurifluus, Hal. 
Cteniscus aurifiuus, Hal. Ann. Nat. Hist. 1839, p.113, ¢ ¢. 
Face white-marked. Abdomen red with its base and apex black, 
and the anal segments apically whitish. Legs red; hind ones with 
femora, tibiae and tarsi apically black. Length, 8 mm. 
The only specimen, which has done duty for forty years, under this 
name in the National collecton, was Acro/fomus lucidulus. 
“On Willows, Ireland; May to September ” (Haliday, who says in his 
MS., now preserved in the Dublin Museum, that he took it himself 
commonly in Ireland). I possess two fine specimens of this species, 
which has nowhere been since noticed, though very distinct in the narrow 
deep black apices of the hind femora and tibiae ; they were captured, also 
in Ireland, at Enniscorthy in Wextord on 6th September, 1898, by the 
late Alfred Beaumont and by sweeping reeds at Carramore Lake, Louis- 
burgh, Co. Mayo, 18th July, 1910, by myself. This Irish species occurred 
to me in the Suffolk marshes at Brandon on 7th June, 1910. 
11. hostilis, Holmer. 
Exenterus hostilis, Holmgr. Sv. Ak. Handl. 1855, p. 239, ¢. 
A shining, black and red-marked species. Head transverse, punctu- 
late, shining and not constricted posteriorly ; clypeus and mouth flavous, 
with the former subconvex and at its extreme apex depressed and rounded. 
‘Thorax gibbulous and immaculate ; mesopleurae obsoletely punctulate 
above; metathorax with five areae, of which the areola is somewhat short 
and subhexagonal. Scutellum subelevated, apically deplanate. Abdomen 
with the second to fourth segments red, rarely black-marked; basal seg- 
ment subaciculately rugose, gradually dilated apically, with parallel 
carirae extending beyond its centre; anus with pale pubescence. Legs 
