CIV 
INTRODUCTION. 
one or more species ; the form also occurs in Africa, from north to south. In the New World, the northern 
portions only are tenanted by Cranes ; one species inhabits, or rather did inhabit, the British Islands. 
Genus Grus. 
235. Grus cinerea ........... Vol, IV. PI. XIX, 
Common Crane, 
An accidental visitant. 
236. Grus virgo. 
Demoiselle Crane. 
A native of Southern Europe, Northern Africa, and India, has been seen*and one shot in Orkney, in May 
1863 (Saxby, ‘ Zoologist,’ p. 8692). Not figured. 
237. Grus pavoninus. 
Balearic Crane. 
This bird has also been captured within the limits of Britain, and by some included in our lists of species 
— wrongly, however, as I think, since its true home is north-western Africa, and its occurrence here must 
have been quite accidental. 
Family ARDEIDjE. 
If the Bitterns are included among the members of this universally dispersed family, then the species 
amount to nearly a hundred in number. Unlike the Cranes, they are generally sedentary in their habits 
and affect watery situations. In the British avifauna there are ten species. 
Genus Ardea. 
238. Ardea cinerea 
Heron. 
Resident and very generally dispersed. 
Vol. IV. PI. XX. 
239, Ardea purpurea . 
Vol. IV. PI. XXL 
Purple Heron. 
This fine bird, which is abundant in Holland and France, can only be considered an accidental visitor 
to Britain. 
