Pectenella] BRITISH ICHNEUMONS. 175 



diinnhiiutit^, heller ocUt tluiikler biaim, seideniiockij;." Atniore bred a 

 female from the same liosl during August, 1894, at Kings Lynn in Nor- 

 folk. 



ANGITIA, Holmgren. 

 Sv. Ak. Handl. 18v58, no. 8, p. 106 ; Thorns. O.E. xi. 1887, p. 1153. 



Body never large, usually entirely black. Head not cubical ; cheeks 

 neither elongate nor buccate, with their costae inflexcd ; clypeus apically 

 simple, with small lateral foveae; mandibles not stout, narrowed towards 

 the subequal apical teeth. Antennal flagellum usually filiform ; scape 

 small and often white beneath. Thorax cylindrical, with the meso- 

 sternum not transverse; propleurae not or hardly aciculate ; metathoracic 

 carinae distinct, areola confluent with the not transrugose petiolar area, 

 which is not or hardly impressed or concave ; costulae nearly always 

 strong, basal area small and triangular; spiracles circular. Scutellum 

 black. Abdomen nearly always mainly black, with the glymmal sulci of 

 the basal segment distinct and postpetiole somewhat explanate, its sides 

 straight and never distinctly rounded; second segment longer than third, 

 with thyridii usually obsolete ; seventh segment of 9 often excised ; 

 terebra a little reflexed and generally about half the length oi the abdo- 

 men. Legs not stout ; hind tibiae often centrally whitish, infuscate at 

 apex and before base, hardly externally sj)inuIose ; tarsal claws more or 

 less pectinate ; trochanterellus usually pale. Wings with tegulae always, 

 and stigma usually, pale ; areolet as a rule small, petiolate and emitting 

 recurrent nervure at or beyond its centre, its outer nervure sometimes 

 obsolete and at others totally wanting ; basal nervure little oblique, the 

 parallel emitted from centre of brachial cell ; discoidal cell broader apic- 

 ally than basally, with its lower angle acute or rarely subrectangular ; 

 nervellus neither oblique nor geniculate. 



Some of the species of this genus, especially the larger ones with black 

 abdomen, are extremely like certain Oniorgae and a thorough knowledge 

 of its distinguishing features is requisite to discriminate between them. 

 The main differences lie in the vertical, postfurcal and (most particularly) 

 never geniculate nervellus of the hind wing ; in the not or but very 

 slightly excavate petiolar area of the metathorax; and, to a lesser degree, 

 in the subparellel-sided and not subglobose postpetiole. Angi/ia is a 

 sufficiently homogeneous genus, and such sj)ecialised facies as exist will 

 be found in the shorter and stouter petiole combined with equally incras- 

 sate terebra of the smallest species, and not as Prof. Dr. Schmiedeknecht, 

 following Forster, has supposed, in the development of the alar areolet, 

 the extent of which is extremely variable, though allowed by Thomson 

 of enough importance to constitute specific rank, which in some cases I 

 am inclined to doubt. The genus, as a whole, is entirely ubicjuitous in 

 Britain, and always figures in even the smallest collection; I have conse- 

 quently taken the greatest possible care to indicate all known differences 

 between the species, not only in the Table but under each individually ; 

 it must, however, always be borne in mind that, though this is the largest 

 section of the old genus Lifntnini, Hohngr., yet a very great many more 

 species are known upon the Continent. Nevertheless we have the con- 

 solation of knowing that the present group is that to which Bridgman 

 paid especial attention and of which he probably noted all the commoner 

 English species. 



