54 REPORT OF NEW JERSEY STATE MUSEUM. 



Mr. S. N. Rhoads says that he has seen packs of four to six 

 Killers at Beach Haven and also at Atlantic City, "slowly trail- 

 ing near the surface with their high dorsal fin standing straight 

 out of the water." (Mammals of Penna. and N. J., p. 23.) 



Orca gladiator Abbott, Cook's Geol. of N. J., 1868, p. 760. 



Orcinus orca Rhoads, Mam. Penna. and N. J., 1903, p. 23. 



Order UNQULATA. 



Hoofed Mammals. 



To this order belong many of the larger mammals of the 

 world, including almost all of the game animals, and the familiar 

 domestic animals, the horse, cow, sheep, goat and hog. 



The Ungulates are characterized by horny hoofs on the toes, 

 corresponding to the claws of the rodents and carnivorous ani- 

 mals. Their legs are usually long, and they are digitigrade, that 

 is to say, they walk on the tips of the toes with the heel consider- 

 ably elevated so that the main portion of the foot appears like a 

 continuation of the leg, and popularly the hoofed toes alone are 

 regarded as the foot. 



In the majority of ungulate animals, moreover, there is a re- 

 duction in the num^ber of toes, and the central metatarsal bones, 

 or bones of the "instep," are fused together, the outer ones being 

 much reduced in size and forming the familiar "splints" of the 

 horse's foot. 



In the pigs, deer, cows, etc., there are four toes, although two 

 are placed higher up than the others and are smaller in size, 

 while in the horse there is only one toe — the familiar "hoof." 



These two groups, the even and odd toed Ungulates, form the 

 two main subdivisions of the order, and are known respectively 

 as the ArtiodactyU and Perissodactyli. The former are also often 

 referred to as split-hoofed ungulates. Many of this group such 

 as the deer, the cow, and their allies have a peculiar four-parted 

 stomach, and they have the habit of casting up the hastily cropped 

 grass into the mouth and chewing it more thoroughly at their 



