60 Messrs. SHEPPARD and WHITEAR’S Catalogue 
Genus LXVIII. Corxwmnvs. 
1. C. glacialis (Northern Diver). 
In the beginning of last winter two young birds of this species 
were killed on the river at Yarmouth. One of them is now in 
Mr. Sabine's collection. 
2. C. arcticus (Black-throated Diver). 
3. C. septentrionalis (Red-throated Diver). 
We have seen specimens of the Red-throated Diver in Nor- 
folk, both in its full plumage and also in its speckled state: and 
Mr. Hunt says that it is not uncommon at Yarmouth during the 
winter.—The position of the feet of Divers at the extremity of 
the body, and their horizontal motion, enable them to make 
rapid turns under water in pursuit of their slippery prey. 
Genus LXIX. Urra. 
1. U. Troile (Foolish Guillemot). 
2. U. Grylle (Black Guillemot). 
3. U. Alle (Little Auk). 
Some years since a Little Auk was taken alive in the stack- 
yard of the late Mr. Webb of Pulham, which place is more than 
twenty miles distant from the sea. Mr. Leathes has had two 
specimens of this bird, one of which was taken alive on the 
turnpike-road at Gunton near Lowestoffe ; and Miss Lloyd of 
Hintlesham has one now in her possession which was taken out 
of the belly of a Codfish. 
Genus 
