386 ZOOLOGY SECT. 



ORDER 3. ICHTHYORXITHES 



Including Ichthyornis (Fig. 994) and Apatornis. Tern-like Birds 

 from the Cretaceous of North America. 



FIG. 994. Ichthyornis victor. The restored skeleton. (After Marsh.) 



ORDER 4. PYGOPODES. 

 Including the Divers (Colymlus) and the Grebes (Podicipes). 



ORDER 5. IMPENNES. 

 Including the Penguins (Aptenodytes, Emlyptcs, &c., Fig. 995). 



