LE VAILLANT'S GREY BIRD (_Pycnonotus Vaillantii_) is a very similar but larger species, met with in Arabia and the Cape of Good Hope. The body of this bird, which we have named after the celebrated traveller Le Vaillant, is of a somewhat lighter grey, and the under side of the wing and rump of a beautiful sulphur-yellow. It has been asserted that a third member of this group has been seen in Spain, but all our attempts to discover it have proved unavailing. Africa and Southern Asia must unquestionably be regarded as forming the almost exclusive habitat of the Grey Birds, from whence they but very rarely wander as far as Europe, or even Arabia. They are first met with in any considerable numbers at about twenty-five degrees north latitude. In the north of Nubia they are to be seen on every mimosa hedge, and in Eastern Soudan are more commonly met with than almost any other bird; in the latter country they alike frequent forests and gardens, mountains or plains, but usually seem to prefer such spots as afford a shelter from the sun; for this reason they are constantly found under the leafy branches of the sycamores that abound on the banks of the Lower Nile. Towards man they exhibit no fear, but trustingly take up their abode close to the huts of the natives. Their temperament is cheerful and restless, and their movements upon the ground and among the branches sprightly and active. Their flight, on the contrary, is by no means elegant, and usually consists of a kind of hovering, fluttering motion. From early morning till late in the evening their loud, clear, and often beautiful voices are to be heard almost incessantly, as they hop busily to and fro, gleaning caterpillars or insects from the leaves, pausing ever and anon to expand or elevate the long feathers that decorate the back of the head, and, with body erect, to cast a keen investigating glance on the surrounding buds and blossoms. Whilst the mimosa is in bloom, they are constantly to be seen upon its branches, diving their beaks amidst the yellow petals, in order to obtain the tiny beetles that lurk within, and thereby smearing their heads all over in the most ludicrous manner with the bright golden pollen that is profusely scattered over the stamens of the flowers. During the period of incubation, which in Soudan commences with the rainy season, and, in more northern latitudes, in the months that correspond with our spring, not only the couples, but the settlements of couples that often build upon the same tree live together in the utmost harmony. The nests are always carefully concealed under the foliage, though so slenderly constructed as to be permeable to light; their sides are composed of fine grass and roots, woven together with spiders' webs, and smoothly lined with delicate fibres. The eggs are small, of a reddish white colour, and marked with dark brown and blueish grey spots, some of which form a wreath at the broad end. We were unable to obtain further particulars