152 REPORTS ON THE STATE OF SCIRNCH. 
The print as a whole is very symmetrical, the two middle toes are 
about the same size, and the two outer rather smaller, but similar to 
each other; the narrow hinder part of the print probably represents a 
portion of the leg. 
The sole is covered with ridges or folds following the outline of 
the toes, but on the palmar surface they are more or less parallel to 
the axis of the foot. Some doubt must exist as to their origin and whether 
they really represent the loose integument of the foot. 
One or two fairly perfect casts of deep impressions are from the 
Lower Keuper at Storeton, and an exactly similar print is in the Salford 
Museurn from Lymm, and they might be compared with some less well- 
defined prints in the Warwick Museum ‘ from the Upper Keuper.’ 
So far great uncertainty exists regarding it, both as to whether it 
represents the pes or manus. Further material may show us this, also if 
there is a trace of a fifth digit. The possibility of its having been formed 
by any movement of such a foot as A 2 or K has been considered, but 
it is highly improbable. It is advisable that this 
P A print should be recorded (bearing in mind that 
it is the print only, and not the foot, that is being 
described) under a special letter. 
P,a four-toed print, breadth rather greater 
than length, toes short and stout, breadth at base 
exceeding length. Breadth of foot greatest at 
root of toes, narrowing rapidly posteriorly till it 
joins the leg. No defined posterior margin. 
Two inner toes alike, two outer toes also alike, 
but rather smaller. (Plate IIT.) 
It is perhaps now advisable to summarise shortly the Reports on 
Triassic footprints. A good deal of new material has been examined since 
the earlier Reports were issued, and some qualifications or corrections 
may be necessary. 
The reasons for not giving generic and specific names to the various 
forms which were expressed in the earlier Reports still hold good. The 
identification of the animals who left the prints with any whose remains 
have been preserved is unfortunately not yet possible, and how far the 
different forms represent different species of animals is not absolutely 
certain. Under these circumstances the specific naming of the prints 
would tend to error and confusion, which would be a worse result than the 
slight inconvenience incidental to the system of identification by letters 
and numbers. It is still necessary to deal with them as prints only. 
The greater number fall into three groups, which have been called 
respectively Cheirotheroid, Rhynchosauroid, and Chelonoid, mostly 
represented by what appears to be the print of a hind foot. 
Cheirotheroid prints have five toes, of which the middle one is the 
longest and the fifth the shortest, and this is usually curved outwards. 
The palmar surface is about equal i in area to that covered by the toes, 
though usually only a portion is shown in the print. To this group 
belong forms A 1 to 4, B 1 and 2, K and L. 
The four forms A 1 to 8.and K form a complete series where the 
toes I. to IV., which in A 1 are somewhat longer proportionately than 
the fingers of the human hand, gradually become shorter and broader, and 
the V. toe decreases in size till in K there are four short broad toes, and 
there is no trace,of the impression of V. 
