Homocidus | BRITISH ICHNEUMONS. 109 


nitidulous and subglabrous with a few deep and scattered punctures, its 
apex laterally subreflexed, its centre depressed and emarginate. Antennae 
filiform, slender and longer than half body, piceous with the scape en- 
tirely black and underside of flagellum castaneous. Thorax nitidulous, 
finely and isolatedly punctate with pleurae nearly glabrous, notauli want- 
ing and small circular humeral flavous marks; metanotum shining with 
obsolete traces of areae ; petiolar area strongly carinate throughout and 
nearly round; spiracles small, circular and black. Scutellum bright 
flavous with only its base narrowly nigrescent; sulcus simple. Abdomen 
deep black, double length of head and thorax, strongly and linearly com- 
pressed from base of second segment, with obsolete sculpture ; basal seg- 
ment very finely and obsoletely sculptured, nearly thrice longer than 
apically broad, laterally distinctly margined with its discal sulcus central, 
not confluent with the apically open basal fovea, and its base subpetiolate ; 
second discally deplanate and shagreened to its centre ; remainder dis- 
cally linear, subcutaneously lacteous and strongly emarginate at their 
apices; terebra subexserted and acuminate with the valvulae very broad 
and strongly rounded above; whole anus and venter stramineous- 
testaceous. Legs short and not stout, fulvous with anterier coxae, tro- 
chanters and apices of hind trochanters flavous; hind coxae, base of 
trochanters and whole femora clear red; hind tibiae and tarsi black with 
a central basally determinate tibial band, and the calcaria, pure white. 
Wings hyaline, not large; areolet wanting; stigma castaneous and 
basally white, radix and tegulae citrinous; nervellus opposite, geniculate 
but not intercepted slightly below its centre. Length, 6—7 mm. Q only. 
The hind tibiae are occasionally pale rufescent, not black, with the cen- 
tral band dull white. 
I cannot satisfy myself that the upper mandibular tooth is bifid ; if this 
be not the case, the present species must be placed in the subgenus 
Saotus of Mesolevus, which certainly more closely resembles the Bassides, 
and that to a remarkable degree, than any other of the Tryphoninae ; but 
in all other essentials, except its lack of areolet, Homocidus emarginatus is 
very like 7. xanthaspis. 
The type was captured by Mr. E. A. Elliott, F.Z.S., at Banchory in 
Kincardine during September, 1910; it has been referred to by him as a 
probable new species (E. M. M. 1911, p. 93); and is in my collection. I 
ree seen a second female, with the paler legs, from Lastingham in York- 
shire. 
25. elegans, Grav. 
Bassus elegans, Gr. 1. E. iii. 313, ¢ ; Holmgr. Sv. Ak. Handl. 1855, p. 371; 
Desv. Tr. Ent. Soc. 1862, p. 211, ¢ ¢?; cf. Brisch. Schr. Nat. Ges. Danz. 1878, 
p.113. B. nigritarsus, Gr. I. E. iii. 338, ¢ ; Holmgr. Sv. Ak. Handl. 1855, p. 365, 
¢¢. B.rufonotatus, Holmgr. lib. cit. p. 369, ¢ 2; cf. Brisch. Schr. Nat. Ges. 
Danz. 1891, p.63, ¢. B. picitans, Desv. Trans. Ent. Soc. 1862, p.217, ¢ ¢. 
Homoporus elegans, Thoms. O. E. xiv. 1520; Morl. Trans. Ent. Soc. 1905. 
p.428; (39: 
Head as broad as thorax and a little narrowed posteriorly; vertex 
evenly emarginate and not short; frons somewhat shining and apically 
sulcate; face parallel-sided, cheeks somewhat elongate and not com- 
pressed; clypeus white, densely sparsely punctate and apically emar- 
ginate ; mandibles somewhat stout and subconstricted apically; ¢@ with 
face, most of frontal orbits and mouth stramineous, its cheeks black, 
