254 BRITISH ICHNEUMONS. [ Perilissus 

examined, with P. sudcincfus, now known to entirely differ from J/. /u/eo- 
lator, Grav. It appears inadvisable to at present admit P. sericeus, Grav., 
as indigenous since it has not been found with us since Stephens recorded 
it (IIL. M. vii. 212) “near London”; it is distinct from all our known 
kinds in its large stigma and shining pubescent abdomen and is well 
described (Stierm. Tryphon. p. 63) by Strobl. 
Table of Species. 
(20). 1. Head large and subcubical; slender 
and usually large species. 
(17). 2. Head hardly broader than thorax, 
posteriorly subparallel-sided. 
(16). 3. Discoidal cell not apically acute 
below; abdomen red-marked. 
(9). 4. Nervellus intercepted above centre; 
clypeus coarsely punctate [SPAN- 
OCTONUS]. 
(8). 5. Metanotal costulae distinct; mouth 
and hind coxae red. 
(7). 6. Abdomen dull and pilose; antennae 
entirely testaceous Le) DaPILICORNIS: Grau: 
(6). 7. Abdomen shining and glabrous; an- 
tennae mainly infuscate .. 2. LUTESCENS, Holmgr. 
(5). 8. Metanotal costulae wanting; mouth 
and hind coxae black 3 .. 3. RUFONIGER, Grav. 
(4). 9. Nervellus not intercepted above cen- 
tre; clypeus finely punctate [Ec- 
CLINOPS] 
(13). 10. Metanotal costulae entire ; head 
usually pale. 
(12). 11. Body entirely pale testaceous, hind 
coxae concolorous 4. PALLIDUS, Grav. 
(11). 12. At least thorax mainly black, hind 
coxae usually concolorous Ll. (5 SPILONOTUS, Scenes 
(10). 13. Metanotal costulae wanting; head 
mainly black. 
(15). 14. Petiole of normal length; whole face 
malerer oe .. 6. ORBITALIS, Grav. 
(14)5 05.) Petiole distinctly short ; facial orbits 
alone pale 
(3). 16. Discoidal cell apically ‘acute ‘below; 
abdomen not red [PERILISSUS].. 8. NAEVIUS, Ged. 
(2). 17. Head broader than thorax, buceate 
behind; costulae wanting | POLY- 
ONCUS]. 
(19). 18. Nervellus postfurcal; head and cen- 
tre of abdomen red g. ERYTHROCEPHALUS, Gr. 
(18). 19. Nervellus opposite; head black; ab- 
domen apically red : 10. BUCCINATOR, folmgr. 
(1). 20. Head broader than long; stout and 
small species [LAPHYROSCOPUS]. 
(22). 21. Metanotal costulae strong; meso- 
sternum flavous.. . II. LUTEOLATOR, Grav. 
(21). 22. Metanotal costulae wanting; meso- 
sternum black. 
(24). 23. Stigma infuscate; metanotal areae 
strong and distinct a v~ UZ. PICTILIS, Holmer. 
(23). 24. Stigma clear testaceous; metanotal 
areae nearly wanting .. .. 13. MINUTUS, 4ridg. 
. TRIANGULATUS, Bridg. 
aa, 
