194 



MR. R. I. POCOCK ON THE EXTERNAL 



hoofs with then- long heels are adapted for progression upon soft 

 marshy ground. (Text-figs. 9, B ; 10, B.) 



There is no trace of metatarsal or tarsal gland. 



The emus opens in the upper half of an oval naked area of 

 skin, broader above than below and extending from the root of 

 the tail nearly to the scrotum. The orifice is surrounded by a 

 thickened glandular rim. The edge of the smooth oval area is 

 sharply defined by the thick growth of hair, which is as luxuriant 

 here as elsewhere on the body. The tail is short, only long 

 enough to cover, when depressed, the smooth anal area, and is 

 thickly covered with hair below as well as laterally and above. 

 (Text-fig. 11, B.) 



The inguinal region has a single pair of teats — not two pairs 

 as recorded by Garrod in the newly-born fawn. The area be- 

 tween them is scantily clothed with long hairs ; but on the outer 



Text-fie-ure 9. 



A. Lower side of fore foot of Hydropotes inermis. 



B. The same of the hind foot. 



side of each there is a large nearly naked area of skin extending 

 a considerable distance outwards and backwards ; and towards 

 the outer edge of this there is a shallow, curved, glandular depres- 

 sion, recalling the inguinal glands of many of the Bovidae. This 

 is the first record of the presence of inguinal glands in the 

 Oervidfe. (Text-fig. 11, A.) 



The prepuce is a naked button of skin surrounded by long 

 hairs and occupying the normal abdominal position in front of 

 the inguinal region and remote from the scrotum. The penis is 

 perfectly simple, straight, and slightly attenuated, with the orifice 

 terminal. It runs between a couple of ridges in the dorsal wall 

 of its sheath. (Text-fig. U, A.) 



