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A PRELIMINARY REVISION OF THE GENUS 

 TBISULOIDES Btlr. (Lep. Het. Noctuidae). 



With Descriptions op New Genera and New Species, by 

 Miss A. E. PEOUT, F..E.S. 



And Notes on the Genitalia by 

 G. TALBOT, F.E.S.. 



(Plates XIII, XVI, XVII.) 



In publishing the following paper we desire to acknowledge our 

 indebtedness to Lord Bothschild for valued help in the loan of types 

 for study, and especially to Mr. W. H. T. Tarns for making dissections 

 of some species which were not available in the Joicey collection. 



Hampson in Cat. Lep. Phal., xiii, has included in the genus 

 Trisuloides Btlr. all the species mentioned in the following paper, but 

 an examination of the genitalia (kindly undertaken by Mr. G. Talbot) 

 and a careful study of other structural points has led us to the con- 

 clusion that there are several distinct genera included in this genus by 

 Hampson. In the following paper an attempt has been made to group 

 the genera and species by an analysis of all the structural characters 

 presented by the palpus, antenna, wing-shape, length of cell and genitalia, 

 together with some minor points. All references, unless given in the 

 text, will be found in Cat. Lep. Phal., xiii, and Hampson's synonymy 

 of species is accepted unless otherwise stated. Species which were not 

 before me for study are marked with an asterisk. 



Although the following conclusions are set forth with some diffidence, 

 the studies of genitalia and of descaled palpi having been based in 

 almost every instance on single specimens, and certain points (as for 

 example the junction of palpus with head) being difficult to judge with 

 accuracy, it is hoped and believed that the groupings (being based on 

 a number of different points) may prove of some service in the future 

 elucidation of this interesting group. 



Measurements of the length of cell are taken on the underside ; 



