226 MERULID A. 
Thrushes have been grouped to form various genera; the 
African species included by Mr. Swainson in his genus 
Hematornis, appear to be closely allied m characters to 
those of the genus [vos of M. Temminck, as given in the 
fourth part, or volume of his Manual, page 606, one species 
of which, called Jzos obscurus, has, according to M. Tem- 
mineck, been found in Andalusia, where it is said to be 
common, and that it also inhabits North Africa. Of this 
bird I have seen a drawing in the possession of Mr. Gould, 
and, from the representation, this species has all the ap- 
pearance of belonging to the same group as the [os plebeius 
of Dr. Ruppel, found in North Africa, and those of Le 
Vaillant from South Africa. Of the habits of the Culdor, 
or Gold-vented Thrush, as before mentioned, nothing is 
known that I am aware of. 
The beak black; the irides probably dark brown ; the 
head, neck, back, wings, and tail-feathers, uniform umber 
brown ; the feathers on the forehead and crown slightly 
elongated, forming a crest when elevated, the plumage of 
the whole head bemg a shade darker in colour than those 
of the body; throat and neck in front clove brown, be- 
coming lighter on the breast, and passing into a dull white 
on the belly ; vent and under tail-coverts brilliant king’s 
yellow; legs, toes, and claws, black. The whole length of 
the bird seven and a half inches; the wing, from the 
anterior joint to the end of the longest quill-feather, three 
and a half inches; the first quill-feather very short, about 
one inch in length; the second three-quarters of an inch 
longer than the first, but shorter than the third: the fourth 
feather the longest in the wing; the tail very slightly 
forked. 
