290 



VERTEBRATE ZOOLOGY 



present volume forbid any but the most cursory treatment of this 

 immense and extremely attractive assemblage of modern verte- 

 brates. Our plan will be to give a brief characterization of each order, 

 to indicate the various groups that comprize it, and to select a few 



FIG. 155. Ichthyornis victor. Restored skeleton. 

 after Marsh.) 



(From Parker and Haswel 



of the most interesting or significant species for illustrative types. 

 In many cases the species singled out for description are of no 

 more intrinsic interest or importance than many others that might 



