Mr. Jenyns on the Ornithology of Cambridgeshire. 319 
Sp. 126. 
Sp. 127. 
Sp. 128. 
Spe. 129. 
Sp. 130. 
Genus XLVILI. PHALAROPUS, Briss. 
P. platyrhinchus, Temm. Man. d’Ornith. p.712. 
Grey PxHaLarore.—Three specimens of this rare bird were 
shot in the fens near Cambridge in the hard winter of 1819-20. 
Genus XLIX. PODICEPS, Lath. 
P. auritus, Temm. Man. d’Ornith. p.725. 
EarED GRreEBE.—In the collection of Dr. Thackeray: from the 
Cambridge market. 
P. minor, Temm. Man. d’Ornith. p.727. 
LittLe Grese.—Common every where in the neighbourhood of 
streams, ponds and other pieces of water. 
ORDER XIV. Pa.mirepes, 
Genus L. STERNA, Linn. 
S. Hirundo, Temm. Man. d@’Ornith. p.740. 
Common TEern.—Found in the Isle of Ely during the summer 
months. 
S. nigra, Temm. Man. d’Ornith. p.749. 
Biack Tern.—Immense flocks of these birds appeared in 
Bottisham and Swaffham fens in the summer of 1824. Many 
of the specimens which came under my observation differed con- 
siderably from each other in their plumage, particularly with re- 
spect to the colours about the head and throat. According to 
Temminck, these parts, which in the winter are much varied with 
pure white, become in the breeding season wholly black, or at 
least of a very dark ash-colour like the rest of the body; but in 
