OF THE GREAT AUK, OR GARFOWL. 335 



of Keiss Castle, Wick, N. B., with an inspection of the remains of animals serving as 

 food to an ancient race of the flint age, in Caithness-shire. 



Amongst the bones of birds in this kitchen-midden, including those of the Gannet 

 (Sula bassana). Shag (Phalacrocorax graculus), Cormorant {Phalacrocorax carbo), and 

 Razor-bill {Alca tor da), were the following bones of the Garfowl {Alca impennis, L.) : — 



The anterior or free extremity of the premaxillary ; a right and left humerus ; a left 

 tibia, and parts of three other tibise, left and right. 



The premaxillary showed a little more vertical diameter than that of the specimen 

 from Newfoundland, here described. In both, the extent from the tip to the fore 

 margin of the bony external nostril is 2 inches ; the vertical diameter in front of the 

 nostril in one is 9^ lines, in the other it is 11 lines. 



The more recent testimonies of the Garfowl in the N.W. coasts of Scotland may be 

 seen in Macaulay, ' History of Kilda,' 1764, and in Sibbald, ' Scotia Illustrata,' 1684. 



DESCRIPTION OF THE PLATES. 



PLATE LI. 



Fig. 1 . Side view of the skeleton of the Garfowl {Alca impennis) : half nat. size. 



Fig. 2. Upper view of the skull : nat. size. 



Fig. 3. Under view of the skull : nat. size. 



Fig. 4. Upper view of the skull of Uria Grylle : nat. size. 



PLATE LII. 



Fig. 1 . Under surface of the sternum of Alca impennis. 



Fig. 2. Fore part of the same sternum. 



Fig. 3. Furculum of Alca impennis. 



Fig. 4. Under view of fourth cervical vertebra of Alca impennis. 



Fig. 5. Upper view of fourth cervical vertebra of ^Zca impennis. 



Fig. 6. Side view of fourth cervical vertebra of Alca impennis. 



Fig. 7. Back view of fourth dorsal vertebra of Alca impennis. 



Fi°-. 8. Proximal half of humerus, anconal or outer side, Alca impennis. 



Fig. 9. Distal half of humerus, anconal side, Alca impennis. 



Fig. 9'. Outline of section of shaft and medullary cavity of Alca impennis. 



Fig. 10. Distal end of shaft and medullary cavity of Alca impennis. 



Fig. II. Front view of left femur, Alca impennis. 



Fig. 12. Front view of left tibia and fibula, Alca impennis. 



Fig. 13. Front view of right metatarsus, Alca impennis. 



Fig. 14. Under surface of the sternum of Uria Grylle. 



(All the figures of Plate LII. are of the natural size.) 



VOL. V. PART IV. 2 Y 



