278 * ENTOMOLOGICAL SOCIETY 



Subfamily IV. ICHNEUMONIN^E. 

 Tribe I. Trogini. 



II. Ichueumontni. 



III. Alomyini. 



IV. Listrodromini, 

 V. Phceogenini. 



Subfamily V. CRYPTIJSLE. 

 Tribe I. Stilpini 



II. Hemitelini. 



III. Phygadeuonini. 



IV. Cryptini. 

 Subfamily VI. PIMPLIN^E. 



Tribe I. Accenitini. 

 II. Lissonitini. 



III. Pimplini. 



IV. Xoridini. 



My own collection is now arranged after the above scheme, 

 and it appears to me a very natural one, so gradually do the sub 

 families and tribes run into one another. The student must not 

 forget, however, that at least sixty per cent, of our Ichneumon- 

 idse are incorrectly placed in our lists and catalogues, and that an 

 enormous amount of work must yet be done before our described 

 species can be brought into their proper genera and tribes. 



In discussion, Dr. Gill asked Mr. Ashmead to figure the typi 

 cal mouth-parts of an ichneumonid so as to enable the Society to 

 judge as to the limits of the variation. He further questioned 

 Mr. Ashmead closely as to the significance of the extraordinary 

 mouth of the new form, and concluded by suggesting that the 

 insect deserves family rather than subfamily rank. Some dis 

 cussion arose as to the use of the jaws in the Ichneumonidae and 

 Braconida3. Mr. Marlatt stated that their sole use seemed to be 

 to enable the insects to issue from their cocoons or from imprison 

 ing substances ; that, after issuing, the jaws are of little or no 

 use, although he had known the larger Ichneumonids to bite 

 when handled. Mr. Howard referred to the wing venation of 

 the new form and stated that the presence or absence of the sec 

 ond recurrent nervure was, in his opinion, not a competent family 

 character, and that from venation alone he would not consider 

 the new form as necessarily an ichneumonid. Mr. Ashmead 

 agreed with the last speaker, but stated that the abdominal char- 



