-.$ 



EXCHANGE 



SOLD BY LONGMANS AND Co., 39 PATERNOSTER Row, E.G. ; BERNARD QUARITCH, u GRAFTON STREET, W. 



DUI.AU AND Co., LTD., 37 SOHO SQUARE, W. ; 



AND AT 



THE BRITISH MUSEUM (NATURAL HISTORY), CROMWELL ROAD, LONDON, S.W. 



