PROCEEDINGS 
OF THE 
ZOOLOGICAL SOCIETY 
OF LONDON. 
PART XVIII. 
4 1850. | 
¥ , ae 
PRINTED FOR THE SOCIETY; 
SOLD AT THEIR HOUSE IN HANOVER SQUARE, 
AND BY MESSRS. LONGMAN, BROWN, GREEN, AND LONGMANS, 
PATERNOSTER ROW. 
