new Genera of Icliiu'iiinunida'. .'^20 



markrcl with a luundisli black spot ; tho liirnlt;r t'einora have 

 a large bhu-k mark on tho inner ami outer .side.s near the 

 apex. 'VIm- (xtreme base of tho petiole is black ; there i.s a 

 lar{j;e mark, sli^'htly narrowed and narrowly incised on the 

 middle, on the base of the second, two lar^o marks roundly 

 narrowed on the inner side on the third and fourth, a broad 

 line, somewhat interrupted in the middle, on the fifth, a 

 narrower, straight, complete line on the sixth, atjd a mark, 

 rounded at the a|»ex, on the seventh, black. The wings are 

 clear hyaline and brightly iridescent ; the stigma ami nervures 

 are deep black ; the recurrent nervure has a sharply oblique 

 slope towards the aj)ex of the wing, and is received near the 

 apex of the basal third of the areolet. 



The recurrent nervure having an oblique slope is probably 

 a characteristic feature with this genus. The radial cellule is 

 deeper in the middle compared with its length than in Cryptus 

 or Pliygadeuon. 



The Genus Labium, DrulU. 



This genus was founded by Brulle in 1846 on a male 

 insect from New Guinea (Hymen, iv. p. 316). It was placed 

 by Brulle next to Tryphon^ and does not appear to have been 

 noticed by any subsequent author. I have in my collection a 

 male from Australia which agrees in the main with the 

 generic description of the French writer. Tlie genus cannot 

 be placed in the Tryphonides; if anywhere, it should be 

 placed in a tribe of the Ichneumoninge either as a separate 

 tribe or as an aberrant member of the Joppini. It has the 

 metanotal characters of the latter, and agrees with that tribe 

 more particularly in having a depression between the meta- 

 notum and the j)ostscutellum, and in the areola being confluent 

 with the petiolar area. It differs, however, from the Joppini 

 and from the Ichneumonini in the male antennae not being lomT, 

 slender, and more or less serrate, but short, stout, almost clavate, 

 and not like the usual male antennas at all. Noteworthy is the 

 large projecting labrum ; the postpetiole is not so clearly 

 separated as it is in most Jo|)pini, but this is a point in which 

 that tribe shows some variety. The spiracles are certainly 

 placed nearer the middle than in Joppa. The recurrent 

 nervure is peculiar from its being sharply angled backwards 

 in the middle and from being interstitial. In view of so 

 little being known of the genus, and as Brulle's descrij)tion 

 omits many important peculiarities, 1 have ventured to inve a 

 detailed description of the genus : — 



(J . Antennas short, not much longer than theabdomen, stout 

 becoming perceptibly thickened towards the apex; the basal 



