24 ICHNEUMONIDyi:. 



tubercles of the former replaced by more or less even and distinct 

 punctation. The Ac^nitides, though \\e]l distinguished by the 

 characters indicated, do not appear to be by any means a natural 

 group but to contain very incongruous species ; and, provided 

 that the IIemigastrides were correctly understood by Cameron 

 (of whicli neitlier lie nor I am satisfied), these two tribes might 

 with advantage be united. The BANCiiinES have at different 

 periods been placed in the Ophionin.e, TiiYPnoNiN.E and the 

 present subfamily, where they appear to me less out of place 

 than elsewhei'e, though at once known from the remainder of the 

 IcH^s-EUMONiD.^ by the peculiarly arcuate, sessile body and the 

 large, rhomboidal alar areolet. 



Table of Tribes of Pimi'LIN.e. 



1 (10) Areolet not large aud rhomboidal ; terebra 



usually elongate. 



2 (5) Hypopygium reaching the compressed anus 



and covering base of terebra. 



3 (4) Basal segment petiolate, with spiracles be- 



yond its centre Hemigastrides, 



4 (3) Basl segment subsessile with spiracles at or [p. 24. 



before centre Accenitides.^.Z'ii. 



5 (2) Hypopygium reaching neither the depressed 



anus nor base of terebra. 



6 (7) Head cubical and not constricted posteriorly ; 



mandibles prominent Xoridides, p. 57. 



7 (6) Head transverse : usually constricted pos- 



teriorh'^ ; mandibles normal. 



8 (9) Abdomen distinctly impressed or tuberculate, 



strong]}' punctate Pimj^Udes, p. 83. 



9 (8) Abdomen not impressed nor tuberculate, 



usually finely punctate Lissonotides, 



10 (1) Areolet very large aud rhomboidal; terebra [p. 215. 



hardly exserted B(oichides,T^.2'i2. 



Tribe HEMIGASTRIDES. 



A small group composed of the two genera, Hemiyaster and 

 3Icicrogasti't;\vas erected by Ashmead in 1900 for species which he 

 considered most closely allied to the Cryptixi and the Meso- 

 STEXiNi, among the Cbtptin-E, from any of Mhich it very materially 

 differs, however, in the entire absence of the alar areolet aud in 

 the shape of the stigma, which is narrow and lanceolate. In 

 these two genera, he says, the marginal cell is subelongate and 

 extends nearly to the apex of the wing, and the single submarginal 

 nervure is short but distinct, and is emitted from the cubital 

 iiervure before the second recurrent nervure. 



Subsequently Cameron published his genus Arfhula, which he 

 considered most closely related to the TiiTPnoxiN.i:, and at the 

 same time gave the followiug table of genera, though iu 1899 



