in his Ichn. Europ. having called the group Trogus, to 

 which that species belongs, it will be necessary to adopt his 

 name, and I avail myself of this opportunity to illustrate the 

 group which he now considers as the true Ichneumons. Having 

 given in my Guide the most complete catalogue of the Ich- 

 neumonidae that has ever been published, a reference to that 

 will show the species belonging to this family, and I cannot 

 perhaps do more service to those who do not possess Graven- 

 hprst's work, than translate his characters of the genera and 

 sections of the tribe before us. 



Guide 

 Genus. 

 Head transverse. 



IScutel elevated Trogus. 496. 



Scutel flat. 



Posterior legs not at once stout and elongated. 

 Aculeus of female concealed, or somewhat exserted. 

 Areolet 5-angular, very rarely triangular, or none. 

 Antennae serrated .... Pristiceros. 485. 



Antennae simple. 



Abdomen cylindric . . . Ischnus. 486. 



Abdomen ovate or oblong. 

 Areolet none. 



Wings long .... Crypturus. 487. 



Wings very short . . Brachypterus. 489. 

 Areolet distinct. 



Exterior cell incomplete Stilpnus. 488. 



Exterior cell complete . Ichneumon. 484. 



Sect. 1 . Scutel and abdomen entirely black. 



2. Scutel and abdomen black, apical segments spotted 



with white. 



3. Scutel pale or with pale spots; abdomen totally black. 



4. Scutel pale or with pale spots; abdomen black, apical 



segments spotted with white. 



5. Scutel pale or with pale spots; abdomen tricolored. 



6. Scutel pale; apex of abdomen and frequently the 



middle also, with yellow spots or rings. 



7. Scutel pale ; abdomen either spotted pale or with 



some of the segments entirely yellow, terminal seg- 

 ments entirely black. 



8. Scutel pale ; abdomen entirely red, or red and black. 



9. Scutel black; abdomen entirely red or red and 



black. 



10. Scutel black ; abdomen tricolored. 



11. Thorax and scutel red or painted with white; ab- 



domen tricolored or bicolored ; apex white. 



Cynodon Dactylon, Creeping Panick-grass, was communi- 

 cated by Mr. R. Kippist, who found it on the beach between 

 Penzance and Marazion. 



