HYDROCHELIDON HYBRIDA. 699 
is replaced by L. hartlaubi. We killed two out of four, which we 
saw at Zoetendals Vley in November, 1863. 
We took three broken eggs, floating on the vley, which we think 
can only belong to this species ; they are greenish-brown, profusely 
| spotted with brown and purple; axis, 2” 1’”; diam., 1” 6’”. 
In the fresh specimens we were much struck with the exceeding 
( beauty of the lovely delicate roseate tint which pervaded the whole 
of the under side; this faded very rapidly after death ; but we think 
it was the most lovely colour we ever beheld. We have never 
noticed the faintest approach to this tint in any bird killed in Table 
Bay, nor in the living example of L. hartlaubi, which we kept for a 
short time in our garden. 
It has been found near Colesberg by Mr. Arnot, and Captain 
Watson saw it abundantly and obtained it at the mouth of the 
Umphaloose River, east of Natal. Though he was there in the winter 
he assured us that all the specimens he saw were hooded as in the 
birds he showed us. Mr. Ayres says that these Gulls “‘ frequent the 
Bay of Natal, frequently alighting on stakes or dead branches of trees 
which may be above the water. They do not appear to be gregarious.” 
Mr. Andersson says that in Damara Land it is found both on the 
sea-coast and on the inland watersheds. It is rather a scarce species 
at Walwich Bay, but more common at Lake N’gami. It generally 
occurs singly. 
General colour of back, cinereous ; a hood of the same colour, but 
lighter, covers the head, chin, and upper portion of the neck ; wing- 
feathers black, faintly tipped with white ; a white spot on the two 
outermost near the tip, and a broad band across some of the others 
towards the centre; the rest of the plumage fine white, tinted in life 
with a lovely pink; bill and feet, deep crimson ; legs flesh-colour ; 
irides white; cere round the eye as in legs. Length, 16’; wing, 
123”; tail, 5”. 
Fig. Swains, B. W. Afr. pl. 39. 
675. HyprocHenipon HyBRipA (Pall.). Whiskered Tern. 
According to Mr. J. Kotze, this species used to breed regularly 
on a vley half way between his residence and the mouth of the Berg 
River. The year of our visit not a bird was to be seen for some 
weeks after our arrival, though we often passed the yley. At last one 
morning early while going along the vley, Mr. Kotze exclaimed, “There 
OE a 
