On the Recent and Extinct Irish Mammals. 57 
The mandible indicates a larger individual than the specimen 
of Ursus ferox from Montana, in the Dublin Museum of Science 
and Art, and one in the Museum of the Royal College of Surgeons 
of England, and the same obtains with other parts of the skeleton. 
Shandon Ursus ferox. 
Mandible. Mandible. 
Cinches.) — (Inches.) 
Length of the Molar series, . 3 5 4:5 
Height of jaw at the Coronoid, . : : c 4:6 4:6 
Thickness of remains of the last Molar, 3 : 0:7 0°6 
Height of jaw at ditto, : 5 5 21 2° 
Ditto in front of the last pre-molar, . : 3 2:2 7 
The depression for the masseter muscle is deepest in the fossil. 
In contour, especially of the lower border, the two agree in all 
particulars, and the condyles are of the same dimensions and are 
relatively thicker than in Ursus arctos, as has been pointed out 
by Waterhouse and Busk, with reference to Ursus spelzus.* The 
humerus and femur will be compared with other specimens at 
pages 59 and 61. These and the general dimensions of the bones of 
the above individual are also noted in my report on the Shandon 
Cave, to which the reader is referred for further data. The 
atlas is nearly entire and gives the following dimensions, Height 
1.3 inches; Neural canal 1.3 x 1.5 inches; Anterior zygapophysis, 
1.7 x linch; Posterior zygapophysis 1.2x linch. Total breadth 
between margins of the former 3 inches; and of the latter 
2.6 inches. 
VI. URSINE REMAINS FROM LOCH GUR, COUNTY LIMERICK. 
‘The details in connection with this discovery are fully recorded 
in Dr. Carte’s paper, and also his reasons for considering the 
remains to have belonged to the Polar Bear,t Ursus maritimus. 
All that can be affirmed apparently with reference to the nature 
of the deposits are that the bones were found in lake mud 
during the progress of a cutting, with the view of draining off the 
waters of the Lake. The age and nature of the deposit there- 
fore cannot be defined. The specimens include a fragment of the 
atlas and axis, anchylosed by disease in a remarkable manner ; 
* Phil. Trans., vol. clxiii., p. 539. 
+ “On the former existence of the Polar Bear in Ireland, a3 is probably shown to be 
the fact by some remains recently discovered at Loch Gur, County of Limerick.” 
Journal Geolog. Society, Dublin, Vol. x, p. 114. 
