662 



COM PARATIYE ANATOMY 



Order VIII. Perissodactyla. (Odd toed ungulates). 



In this order the animal walks on the middle digit of fore and hind 

 feet. The following three families make up the entire order: Equidae 

 (horses, asses and, zebras). Tapiridae (tapirs) ; and Rhinocerotidae 

 (rhinoceroses). 



Order IX. Proboscidia (Elephants). 



Order X. Sirenia (Sea-cows such as Dugongs and Manatees, Fig. 

 390). 



Aquatic offshoots of ungulate stock. 



Hyrax abyssinicus (coneys or hyraces) 



Fig. 391. Hyracoidea. 

 (From Lull after Brehm.) 



Order XI. Hyracoidea (Coneys, Fig. 391). 



Short-eared, rodent-like, primitive ungulates, usually living among 

 rocks, although some are tree-inhabiting. 



Section D. Cetacea (Whales and Dolphins, Fig. 392). 



Order XII. Odontoceti (Toothed-whales). 



Examples of these are : sperm-whales, narwhals, beaked whales, 



!>,!,, In,,,,* ,lfli>liis (dolphin) 



Jialaena myglecetus lu'lialrbonf tefiate) 



Fig. 392. Cetacea. 



In D, a, upper arm; b, blow-hole; fa, forearm; h, hand; p.thl, small remains 

 of pelvis, thigh, and leg ; r, roof of palate ; w.w., plates of whalebone ; /, whalebone 

 fringe. (A, after Flower and Lydekker ; B, after Cuvier ; C, after Sedgwick ; D. 

 after Holder.) 



