Dyspetes) BRITISH 1CHNEUMONS. 171 
Thomson first employed Dysfefus in 1883 (O. E. ix. 895 e¢ 899) for the 
reception of the present species, and he placed it in the Zryphoninr, from 
the remainder of which he distinguished it by its complete areolet, stout 
and mutic claws, and centrally angulated vertex. Ashmead is certainly in 
error in placing Dyspfefes, as he does (Proc. U. S. Nat. Mus. 1900, p. 56), 
in the Pimpiinae and allying it with G/yp/a on account of the impressions 
of its second and third abdominal segments, which represent little more 
than thyridii. With the exception of its Mesochoroid areolet, which is 
quite distinct in this subfamily, its whole facies is Tryphonid. 
1. praerogator, Liv. 
Ichneumon praerogator, Linn. S. N. 1758, 565; F. S. 1761, 405; Fab. Piez. 
99; Jur. Hym. 107; Gr. Nov. Ac. Acad. 1818, p.285; Oliv. Encycl. Méth. 191; 
Thunb. Mem. Ac. Peters. 1824, p.349. I. mandibulator, Thunb. lb. cit. p. 343. 
Tryphon praerogator, Gr. I. E. ii. 127; i, Suppl. 687; Ste. Ill. M. vii. 232; 
Blanch. Hist. Ins. iii. 308, g ¢. Mesoleius praerogator, Voll. Tijds. v. Ent. 1877, 
p. 64. Dyspetus praerogator, Thoms. O. E. ix. 899, ¢ 2. 
A black species with white pubescence and the mouth and legs, except 
usually the hind ones, red. Head transverse but not abruptly constricted 
posteriorly, occiput acutely emarginate centrally; frons and face distinctly 

punctate; clypeus subglabrous and, except basally, testaceous; mandibles 
and palpi concolorous. Antennae as long as the body and filiform, black 
and becoming rufescent apically. Thorax black, dull and immaculate, 
with obsolete notauli; metathorax closely punctate with the areola elon- 
gate, not discreted from basal area and emitting no costulae; lateral 
carinae entire, and the small petiolar area discreted. Scutellum black 
and not margined. Abdomen shagreened and hardly shining, fusiform 
