30. 
APPENDIX. 
Since the Catalogue was printed, the following additional 
information has been received -— 
MAMMALIA. 
Martes sylvestris Wiss. Marten (p. 6). 
One shot in the woods, Azerley, near Ripon; now in the 
possession of Col. Crompton (Joseph Lucas, MS.). 
One seen by Mr. J. Lucas, in 1870, on High Ash Head 
Moor, above Masham (MS.). 
Phoca vitulina Z. Common Seal (p. §). 
Respecting the date of extinction, information received from 
Mr. H. G. Faber, of Stockton-on-Tees, and Mr. H. T. 
Mennell, shows that the animal survived much later than 
is stated at p. 8. 
The latter has furnished a copy of his and Mr. Perkins’ 
list of the mammalia of Northumberland and Durham, 
published in 1863, wherein is stated that between 1820 and 
1830 about a thousand seals frequented the mouth of the 
Tees, of which as many as thirty might often be counted 
at one time; but that in 1862 the number was reduced to 
three individuals. The seals exhibited great dread of the 
steamboats, which had greatly increased in number on the 
river during the preceding few years ; and to this and the 
enormous increase of population in the neighbourhood, 
was attributed their rapid decrease. 
Mr. Faber remembers the seals being numerous at the 
Tees mouth, and has seen them lying on the sands as 
many as a dozen together. He recollects disturbing one 
about twenty years ago on Seaton Snook, which was very 
tame, swimming about within twenty yards, and could only 
