ON THE FAUNA AND FLORA OF THE TRIAS OF THE BRITISH ISLES. 301 
The actual area exposed was about 40 feet by 50 feet, and from this 
between twenty and thirty footprint-bearing blocks were raised, many 
of them over 6 feet square. The examination of these has resulted in 
some addition to our previous knowledge, and the more important features 
may well be recorded. 
The prints are found at the extreme north end of the south quarry in 
three beds. The upper bed is much cut up by desiccation cracks, and the 
prints are not very well preserved ; only a few rather large Cheirotherium 
(A 1) prints with the digits widely ‘spread, and not at all clearly impressed, 
and a few Rhynchosauroid prints were found. It would seem that the 
conditions were unfavourable to the production of good prints ; however 
that may be, very few slabs seemed worth retaining by the quarrymen. 
The middle bed presented an extremely fine and smooth surface for a 
sandstone, was free from cracks and distortion of any kind ; and from this 
bed the greater number of prints were obtained. 
The lowest of the three yielded some small prints, mostly Rhyncho- 
sauroid, on an uneven and coarse surface. 
Cheirotheroid Lorms.—A 1 =Cheirotheriwm stortonense was well repre- 
sented, and the fact, hitherto rather uncertain, that the digits of the 
manus terminated in nails was distinctly proved by several examples. The 
small tubercles described by Professor Williamson as covering the sole of 
the foot in a specimen from Daresbury were very distinctly marked on 
most of the prints. 
Owing to the large size of the slabs it was possible to examine and 
compare a great number of continuous series of prints both of this and 
other forms. The linear arrangement of the prints of this form and the 
parallelism of the axis of the foot with the line of movement, as well as 
the nearness of the right and left prints to the median line previously 
observed, were very generally present. 
A 4, described in the report, Part IV., presented at the York meeting 
from some imperfect specimens, has been largely represented in the 
present find, and some moditications and additions to 
the description given will be necessary. Instead of the wy 
pes being like that of A 1 the LV. digit is found on all ct 
the prints to be much shorter in proportion to the other 
digits thanin Al. The V. digit, which is smaller than 
in Al, is about the same proportionate size as in A 2. 
No. [V., though short, is generally well developed and 
stout, and has a long and sharp nail; No. J, which is 
somewhat longer than IV., is slender and weakly im- 
pressed. The manus has five digits, but V. is not gene- 
rally so clearly shown as the others ; it is rather in the aN 
rear of the others in a corresponding position to the same 
digit of the pes. ‘The type is a series in the Zoolog gy Right Pes and 
Museum of the Liverpool University. They are also Manus, A 4, d. 
present on the British Museum Slab, R. 3483. 
As pointed out by Mr. Lomas in his description of the slab in the 
Museum of the Liverpool University, the axes of the hind feet instead of 
being parallel to the line of movement point outwards at a considerable 
angle. This is the case with all the prints that have been examined, and, 
taken.in connection with the small size of the manus and the fact that it 
(the manus) made no deeper impression than the much larger surface of 
